Block list

General usage

The following common options are available for (most) blocks:

This modal contains the following parts:

A title bar containing the name of the block or setting
A icon to apply the changes
A central area containing the settings specific to the related block
A cancel button to undo the changes from the previous settings
Controls for playing only the block
An accept button to apply the changes

Restrictions

Some blocks will not be shown when connected to a device incompatible with the blocks. For example, the 'Head motion' block will not be shown for devices where the head cannot move.

Simple blocks

The following blocks are available for both the simple and advanced composer.

Go to POI block

Function

This block will move the device to a specified POI on the currently selected map.

Settings

Select the map containing the POI for the device to move to
1. Tap the map to use
2. Tap the button 'OK' to apply the new map
Select the POI contained in the selected map
1. Tap the POI for the device to move to
2. Tap the option 'OK' to set the POI
Slide the bar to set how fast the device should move to the POI
Enter a text for the device to say if the POI can’t be reached after 5 tries
Set the language for the device to state the 'retry text' in.

The POI block will be skipped if the map and/or POI is no longer available or if the route has been blocked off (by virtual/real obstacles)
The retry text will only be spoken if the POI itself cannot be reached (e.g. someone is actually standing on the POI). Otherwise, the device will re-calculate a route to the POI for up to 5 times.

Head-motion block

Function

This block is used to move the head of the device to a custom position.

Settings

Move the head in the allowed direction(s) to the new position ⁽¹⁾
Tap the button 'Test' to test the new position and allow for corrections if needed

⁽¹⁾: Device specific properties. For example, robots like James and Cruzr can only move their head up or down, while robots like Zora/Nao can move their head in all directions.

Gym block

Function

This block will make the device perform an exercise.

Settings

Tap the exercise to display a list of exercises available on the device. Select an exercise in the list for the device to execute.
Enter the additional parameters for the exercise (e.g. slow the exercise down, set the distance to walk, …).
Select the sub-exercise to execute (e.g. 'move the left arm only')
Tap the option 'device will count cycles' to have the device count the number of times the exercise has been completed.
A figure is shown with information on the parameters of the exercise.

Every exercise has different options. For example: 'Moving with the arms' will show options for which arm to move, while the exercise 'To step' will have options for the direction to move in.
The explanatory figure isn’t shown for all exercises. For dance-exercises for instance, this option will not be shown.

Speech block

Function

This block will make the device say something (with some customizable properties). For example, the volume and language to be used by the device can be changed.

The available options for the speech are determined by the connected device.

Settings

Enter a text in the main text box.
Tap the button 'Add (x)' to insert a variable in the message at the location of the cursor.
Toggle the options 'animated speech' and/or 'blocking' as needed.
Tap the icon to view or hide advanced speech options. ⁽¹⁾
Change the 'speech speed', 'voice pitch' and/or the 'volume' for the speech.
Tap the icon to use voice input to enter the message. ⁽²⁾
Set the language ⁽³⁾ and voice ⁽⁴⁾ for the speech.

⁽¹⁾: Changing the volume in a speech-block will change the general volume on the device.
⁽²⁾: Requires the app 'Google assistant' on Android tablet (which in turn requires internet connection).
⁽³⁾: The current language and the default voice will be selected by default.
⁽⁴⁾: This option is only available if multiple voices for the selected language are installed.

Wait for voice command block

Function

This block will pause the composition until the device understands (one of) the entered command(s).

To avoid false positives, use normal sentences and avoid using short statements or single words.

Settings

Enter the command for the device to listen to.
Tap the button 'Add (x)' to enter a variable at the location of the cursor.
Tap the icon to use voice input to enter the command.
Tap the button '+ Add new command' to create a new entry to the list.
Optionally, enter a timeout after which the composition will continue.
Set the option to '0' to have the device listen indefinitely.
Set the options for how the device will start to listen to the voice commands.
Check the option 'Require wake-word' if the user needs to state the wake-word (e.g. 'OK James') before stating the voice-command.
Check the option 'Manual trigger' to display the microphone on the Kiosk screen.

The device will listen for the term in the currently set (speech-)language of the device.

Dance block

Function

This block will make the device perform a dance routine.

Settings

The currently selected dance is shown at the top of the modal
Enter a search-term or apply a filter to narrow the list of dances down
Sort the list of available dances on their properties
Select the dance routine to be executed from the list

Make sure the device has plenty of room before starting this composer-block.

Animation block

Function

This block will make the device perform an animation (e.g. 'Wave hello').

On Zora, the 'Postures' are included in this category.

Settings

The currently selected animation is shown at the top of the modal
Enter a search-term or apply a filter to narrow the list of animations down
Tap the icon to display the list of available filters:
1. Tap the icon to apply the filter
2. Toggle the checkboxes next to a category to show or hide the animations
Sort the list of available dances on their properties
Select the animation for the device to execute
Toggle whether the block should play concurrent with the following blocks in the composition

Not all animations can be performed all the time. For example, no animations can be performed while Zora is sitting on the bench.
The device will assume the correct posture before executing the animation. For example, the device will stand up before starting the animation 'BowShort1'.

Emotion block

Function

This block will make the device perform an emotional animation (e.g. 'Angry' or 'Determined').

Settings

The currently selected emotion is shown at the top of the modal
Enter a search-term or apply a filter to narrow the list of emotions down
Tap the icon to display the list of available filters:
1. Tap the icon to apply the filter
2. Toggle the checkboxes next to a category to show or hide the emotions
Select the emotion for the device to emulate
Toggle whether the block should play concurrent with the following blocks in the composition

The device will assume the correct posture before executing the animation. For example, the device will stand up before starting the animation 'Confused 1'.

Wait block

Function

This block will pause the composition for the specified time. For example, the device will wait for 2 seconds while an image is being shown.

Settings

Enter the amount of time to wait (e.g. '5' out of '5 minutes')
Select the unit of time (i.e. Seconds, Minutes or Hours) for the composition to wait before continuing

Wait on sensor

Function

This block will pause the composition until a specific (collection of) sensor(s) is triggered. For example, a James can be configured to continue if 'any bumper' or if 'only the front bumper' is triggered.

Settings

Enter an optional timeout for the block
Enter a number and select a unit (e.g. '5' 'seconds' or '2' 'minutes').
Set the time to '0' to have the composition wait indefinitely.
Enter a search term in the field to narrow down the list.
Tap any input (or collection of input devices) in the list to enable them to continue the composition.
The value for the wait_sensor is shown below the name of the input device (e.g. 'wait_sensor' will contain the value 'BASE_LEFT' if the left bumper was triggered).

The list of available sensors will only be shown if ZBOS Control is connected to a device.

Mqtt block

Function

This block allows publishing and subscribing to MQTT topics, either on the internal device broker or external MQTT brokers (see: mqtt connection block). Any data received is stored in a variable named mqtt. To use the variable in subsequent blocks (e.g. speech), the content can be accessed by using the term {mqtt.payload}.

Settings

Toggle whether the composition should wait for a message from the broker before continuing with the composition

Tap the icon to view the list of available topics to interact with the ZBOS platform.
Enter the topic for the message for the composition to listen to (e.g. zbos/audio/volume/event)

Tap the icon to view the list of available topics to interact with the ZBOS platform.
Enter the name of the mqtt connection to use (leave blank to use the broker on the device)
Toggle whether some conditions should be met before continuing with the composition after the event has been received

The options for the conditions for the block to proceed can be set using if-statement(s). For example:

The condition of the response for the humidity is higher than 80 and lower than 20 could continue a composition stating a plant needs the water level checked.

Toggle whether a message should be published on the broker
Enter the topic for the message to be sent to the broker (e.g. zbos/audio/volume/set)

Tap the icon to view the list of available topics to interact with the ZBOS platform.
Enter the name of the mqtt connection to use (leave blank to use the broker on the device)
Select the type of message to be sent to the broker (Text or JSON).
Enter the payload for the message (e.g. 60)
Tap the button 'Add (X)' to add a variable to the payload (Text only)

Take care not to confuse the PUB/SUB tags of the message list. For example, the device will publish a message on topic zbos/audio/volume/event (PUB) where the block will SUBscribe to the topic.

Usage

The composition will listen for a message before sending the message.

Listening to a topic

Tap the icon to view a list of all available topics for the ZBOS platform.
1. Enter an optional search term to filter the list.
2. Select the topic for the composition to listen to.
Set the payload for the message (See ZBOS RAIL MQTT API Reference for more information and examples of existing topics and payloads)
(Optional) Set the conditional requirements for the response
- Sending a message on a topic

Tap the icon to view a list of all available topics for the ZBOS platform.
1. Enter an optional search term to filter the list.
2. Select the topic for the composition to publish on.
Set the payload for the message (if required) (See ZBOS RAIL MQTT API Reference for more information and examples of existing topics and payloads)

Example

The following configuration could be used to set the volume to 60 using the mqtt block:

Wait for QR code block

Function

This block will make the device wait for a QR code before continuing with the composition. The scanned code can be used in the subsequent block using the "wait_qr_code" variable

Settings

Check the option 'Check for scanned words' to restrict which values will be permitted to be used to continue the composition
Enter how many times the device should retry to scan the code ⁽¹⁾
For example, setting the amount of retries to '0' will only scan the code once.
Enter how long the scan should wait for a code to continue if no qr code is shown
Enter a value of '0' for the device to keep waiting indefinitely
Check the option 'announce the status' to have the device use the built-in speech options for announcements (i.e. 'I will now start a qr scan' and/or 'The scanned QR code is invalid, please try again')
Check the option 'Play a sound' to have the device play a 'beep' when a QR code has been scanned
Check the option 'Show the camera' to select have the device display the current camera while the QR scan is in progress
An additional or will be displayed after the scan to display if the QR code was valid.
Enter the terms that must be matched for a 'valid' qr code ⁽¹⁾

⁽¹⁾: These options are only available if the option 'Check for scanned words' is checked.

Not all options may be available on devices. For example, the option 'Show camera' will not be available devices without an external display.

Usage

Using the block

Simply drag the block into the timeline and enter the proper configuration:

Retrieving the data

Enter the variable "wait_qr_block" to retrieve the information. For example, using the variable in a speech-block:

Wait for monitoring event

Function

This block will make the device wait for a monitoring event to occur before continuing with the composition.

The options for the specific sensor must be enabled in the Apps and config page. Only the option 'Enabled' needs to be checked, the setting cloud-sync is optional.

Settings

The following options are available for the block:

Enter the source of the monitoring event (i.e. the sensor/button pushed)
Alternatively, tap the icon to view the available sources registered for events in the cloud.
Enter the type of event
Alternatively, tap the icon to view the available types of events registered for events in the cloud.
Enter the type of alarm for the event (optional)
Tap the icon to view the available types of alarms registered to events.

The Monitoring page can be used to review the available options for a sensor or button.

The type of the event
The source of the event

Usage

Using the block

Simply drag the block into the timeline and enter the configuration for a monitoring event. For example:

Retrieving the data

Enter the variable "wait_monitoring" to retrieve the information. For example, retrieving the source of a monitoring event:

For additional information on the detected event, see the Monitoring page for more information.

Mqtt connection block

Function

This block allows for the configuration of an external mqtt broker.

Settings

The name of the connection to be used in the mqtt block ⁽¹⁾
Enter the required connection information for the external mqtt broker
Optionally, enter the required extra options information for the external mqtt broker
Optionally, enter the message to be sent on the broker once the connection has completed.

⁽¹⁾: The name of the connection is auto-generated and cannot be changed manually.

Usage

Enter the information for the external mqtt broker
Enter the name of the broker in the field 'broker connection' in the mqtt block.

Settings block

Function

This block allows getting, updating or resetting settings of the device.

Settings

Toggle whether to get the current settings from the device.
Toggle whether the settings of the device should be updated.
Toggle whether settings should be reset.

The response from this block will be stored in the 'settings' variable.

Get device settings

The following settings are available for the settings:

Select the app category and the app name⁽¹⁾ to get the current settings of the ZBOS device (see the Apps & Config page for more information).
Select which settings from the category should be included in the response.
Optionally, select which settings of the subcategories should be included in the response.

⁽¹⁾: Alternatively, the settings category can be entered manually.

A quick way to remember how to retrieve the data is to view the titles of the settings block:

Use the variable {settings.1.2.3.value} to retrieve the value of the specified setting.

For example: {settings.
get_result.
settings.
robot_name.value}
will retrieve the value of the 'device name'.

Use the variable {settings.1.subcategories.4.5.6.value} to retrieve the value of the specified setting in a subcategory.

For example: {settings.
get_result.
subcategories.
location.
settings.
location.value}
will retrieve the value of the 'location'.

Update device settings

Check the option to 'Update' to view the following settings:

Select the app category⁽¹⁾ to display the app selection (e.g. 'zbos' category)
Select the app name⁽¹⁾⁽²⁾ in the selected category (e.g. 'device')
See the Apps & Config page for more information.
Tap the option 'Edit settings' to edit the settings.

For example, to edit the name of the device, edit the following setting:

⁽¹⁾: Alternatively, the settings category and category can be entered manually.
⁽²⁾: The settings will be opened as soon as the app name has been selected.

The response from the update request can be retrieved using the variable {settings.update_result} ('true' or 'false').

Reset device settings

Select the app category and the app name⁽¹⁾⁽²⁾ to get the current settings of the ZBOS device (see the Apps & Config page for more information).

The response from the update request can be retrieved using the variable {settings.update_result} ('true' or 'false').

Examples

Example settings block

The following example will retrieve the 'low battery setting', 'volume' and 'robot name' setting from the device:

The settings block will retrieve the information (as a json) and store the retrieved data as the variable 'settings'.

The json contains the following information:

{ "get_result": { "label_key": "robot.robot_settings_name", "description_key": "Additional options for the tester", "settings": { "volume": { "value": "53", "default_value": "50", "type": "integer", "label_key": "robot.pref_title_volume", "range": { "min": 0, "max": 100 } }, "robot_name": { "value": "James", "default_value": "", "type": "string", "label_key": "robot.pref_title_robot_name" }, "min_battery_level": { "value": "40", "default_value": "30", "type": "integer", "label_key": "robot.pref_title_min_battery_level", "range": { "min": 0, "max": 100 } } }, "subcategories": {}, "orphaned": false } }
The text overlay and speech block will display the formatted information.
At the end of the composition, the information should no longer be shown.

This composition can be imported in the simple composer as reference.

Settings block configuration

The following configuration can be used to retrieve the settings from the device settings:

Select the app retrieve the general settings of the category.
Select which settings to be retrieved.
- Speech / Text Overlay configuration

The following settings can be used to retrieve the specific information:

Monitoring block

Function

The monitoring block can be used to generate a monitoring event using a composition.

Settings

The following settings are available for the monitoring block:

Enter a source for the event (e.g. a type of sensor or device) Tap the icon to view a list of sources of events already existing on the Cloud.
Tap the '{x}' button to add a variable to the source list.
Enter a type of event (e.g. 'temperature' or 'button') Tap the icon to view a list of sources of events already existing on the Cloud.
Tap the '{x}' button to add a variable to the source list.
Enter a value for the event (e.g. '20' in '20 °C' or '1' for a button press) Tap the '{x}' button to add a variable to the source list.
Optionally, enter a unit for the event (e.g. '°C' in '20°C') Tap the '{x}' button to add a variable to the source list.
Optionally, enter a date for when the event should be registered Tap the '{x}' button to add a variable to the source list.
Optionally, enter additional data the monitoring event
Tap the button to add an additional variable to the event:
1. Enter a key and value for the additional data.
2. Tap the '{x}' button to add a variable to the source list
3. Tap the button to remove the entry from the list
Optionally, select an alarm type to use
1. Enter an alarm type (by using the icon to view all available alarm types, typing a value or selecting a variablue using the '{x}' button)
2. Select the severity for the alarm (Emergency, Alert, Critical, Error, Warning, Notice, Information or Debug)
3. Optionally, toggle whether the alarm should persist
4. Optionally, select the date for the alarm

Wait for webhook block

This block can be used when the device if connected to internet.

Function

The block will wait for an external event on the Cloud to continue the composition. For example, the webhook can be entered on any webbrowser and the device will continue with the composition.

The webhook needs to be registered for use for the device. See the section Webhooks for more information.

Settings

The following settings are available for the webhook block:

Enter the webhook manually or tap the button to view the webhooks registered to the user.
Tapping the button will display the following options:
1. If necessary, enter a search term to filter the list of available webhooks
2. Tap the webhook to be used in the name and ID field
3. Tap the button 'Accept' to apply the webhook
Enter the ID for the webhook manually or use the in the name setting to enter the value Leave this entry blank to have the device respond to any valid webhook registered to the device.
Optionally, enter a timeout for the block (i.e. the composition will continue after the timeout, even if no webhook event was received).

The user needs to be logged in to view the list of webhooks registered to the user.

Open web page block

Function: Display a web page on the tablet of the device

Available settings:

Tap the button '{x}' to select a variable to be inserted in the URL field
Enter the URL for the website to be shown on the device

This block is set to be non-blocking, meaning the composition will continue while the website is being shown. The duration of the time the website will be displayed must be set in the next block (e.g. Wait for sensor block).

Wait for face block

This block requires the app ZBOS Face Recognition to be installed on the device.

Function

This block will pause the composition until a human face is (not) detected by the main camera.

Settings

Check the option 'Only allow a known face' to continue the composition only after a registered face has been detected. If this option is checked, the 'amount of faces' option will be disabled.
Select how many faces should be detected before the composition should continue (e.g. 'equal to one' or 'at least two').
Set the timeout for the composition to continue if no face has been detected (value '0' equals no timeout).
Toggle the option 'Show multiple output connectors' to show an additional output connector for the timeout if it is set. ⁽¹⁾

⁽¹⁾: Advanced composer only.

Output

The data retrieved from the block can be used in the rest of the composition using the following variables:

{face_detect} has the following properties:

{
"uuid":"uniqueidentifier",
"name":"<name of the known user>",
"role":"<description of the user>"
}

{face_detect_length} is a different variable containing the number of recognized faces.

For example, the following input can be used to state the response: "Hello, {face_detect.name}. You are registered as {face_detect.role} in the system.".

The name will be "unknown" if the face isn’t registered in the Face detection configuration on the device.
Only one event will be sent even if multiple people were recognized.
The variables will have their default value if the timeout expires.

Motion detection block

Function

This block will make the device take images and warn the user if changes have been detected since the previously taken image.

Settings

Check the option 'Continue on detection' to toggle whether the composition should continue once any motion has been detected
Check the option 'Stop after time' to toggle whether the device should stop recording after the set period of time (see (4))
Check the option 'Generate monitoring event' to toggle whether a monitoring event will be triggered when the block continues The settings for the monitoring event can be modified here
Set the maximum duration for the device to take image(s) The option 'Stop after time' needs to be checked
Toggle the option 'Show multiple output connectors' to show an additional output connector for the timeout ⁽¹⁾

⁽¹⁾: Advanced composer only.

Examples

Security-camera

Doorman

Text input block

Function

This block will ask the user to enter some input on the kiosk-screen.

Settings

Enter the title that will be shown on the kiosk (e.g. 'What is your e-mail address')
Select the type of entry the user needs to enter (e.g. 'E-mail') The available options are 'Date', 'Date & Time', 'Email', 'Number', 'Password', 'Phone', 'Text', 'Textarea', 'Time' and 'URL'.
Enter the text to be shown in the 'confirmation' button (e.g. 'Continue')

The input from the block can be used in other blocks by using the variable {input}.

The type of entry needs to be entered correctly before the composition will continue.

Variables

Function

This block is used to declare and define variables to be used in the composition.

Settings

Enter the name of the variable to use Alternatively, tap the button {x} to view the list of already available variables to assign a new value
Enter the (new) value for the variable
Tap the button to add a new variable to the list

Once a valid variable/value pair has been entered, a new blank field will be shown below the currently existing list.

Tap the button {x} next to a field to display a list of known variables. Select a variable to enter it in the adjacent field.

Usage

The defined variable can be used in other blocks (speech-block for example):

Add the earlier defined variable by tapping the 'Add {x}' button and selecting the variable in the list to insert it at the location of the cursor in the text field.
Enter the name of the variable between brackets to enter the variable in the text-field.

The variable will only be styled once the text-field has been un-selected.

Text overlay block

Function

This block has been designed to display some text on the tablet of the device. The text will be shown on top of the background image, video or default background of the running composition.

Settings

Enter the text to be shown (in multiple lines if necessary). Tap the button {x} to add a variable to the entry
Toggle whether the current kiosk color scheme should be used as an overlay⁽¹⁾
Set the font color for the text and the background color for the overlay

⁽¹⁾: If the background is set to an image, the image will be used as background.

String operations

Function

This block is used to perform operations on variables.

Settings

Tap the button to view the available operations:

Select an operation from the list and tap the option 'OK' to add the operation to the block. Additional options will be shown in the list based on the available operation. For example, the following options will be shown for a 'replace' operation:

The variable 'input' will have every character 't' replaced by 'T' and the result of the operation will be stored in the variable input_replaced.

Operation	Arguments	Result
Uppercase	Input variable Output variable	String
Lowercase	Input variable Output variable	String
Capitalize	Input variable Output variable	String
Title	Input variable Output variable	String
Remove	Input variable Target (can be a regex) Output variable	String
Replace	Input variable Replacement Target (can be a regex) Output variable	String
Length	Input variable Output variable	Number
Count	Input variable Target (can be a regex) Output variable	Number
Slice	Input variable End position Start position Output variable	Number
Starts with	Input variable Target Output variable	Boolean
Ends with	Input variable Target Output variable	Boolean
Contains	Input variable Target (can be regex) Output variable	Boolean

Operation

Arguments

Result

Uppercase

Input variable
Output variable

String

Lowercase

Input variable
Output variable

String

Capitalize

Input variable
Output variable

String

Title

Input variable
Output variable

String

Remove

Input variable
Target (can be a regex)
Output variable

String

Replace

Input variable
Replacement
Target (can be a regex)
Output variable

String

Length

Input variable
Output variable

Number

Count

Input variable
Target (can be a regex)
Output variable

Number

Slice

Input variable
End position
Start position
Output variable

Number

Starts with

Input variable
Target
Output variable

Boolean

Ends with

Input variable
Target
Output variable

Boolean

Contains

Input variable
Target (can be regex)
Output variable

Boolean

Video call

Function

This block is used to have the device start a video call with a connected user.

Settings

Toggle whether the composition should only continue after the call has ended
Toggle whether the audio from the device to the connected user should be streamed immediately
Select where the call should be shown for the connected user (i.e. in the dashboard widget, in a floating window in the dashboard or in the steering page)
Select which video stream should be shown (i.e. which available camera or the device screen)
Specify which registered user should be able to connect with a video call⁽¹⁾

⁽¹⁾: You need to be logged in to view the available options. If the user is logged out, only the option 'Any connected user' will be shown.

The composition will continue if any connected user refuses the call.

Date/time block

Function

This block can be used to modify existing date/time events. This block contains 2 main sections, specifically:

Parsing datetime events will result in a string that can be used for output (e.g. speech block)

For example, the following operation can be used to read out the current date:
Manipulated datetime events will result in modified datetime outputs which can be used in other block (e.g. for generating a monitoring event)

For example, the following operation can be used to generate a variable dated to a year from the current date:

Settings

The list of parsed datetime operations is shown
Tap the icon to modify the operation.
Tap the icon to remove the operation.
Tap the button to add a new operation to parse a datetime operation
The list of manipulated datetime operations is shown
Tap the icon to modify the operation.
Tap the icon to remove the operation.
Tap the button to add a new operation to modify a datetime event.

The variables defined in this block can’t be used in other operations in this block. For example, to set the date to a year and a day back, 2 datetime block need to be used.

Multimedia block

Function

This block will display a media file on the device. The settings vary based on the media type of the selected file (e.g. image, audio or video).

See the chapter Multimedia for more information about multimedia files and storage.

General settings

The general multimedia block will display the following options:

Tap the 'Selection' icon to select a file in the listTap an item in the list of media stored on the device to make the device play the selected file.
1. Select the source of the media file ('Device' or 'Cloud') (if available)
2. Tap the media file to use in the list
3. Optionally, select the file(s) on the Control device to upload and tap the button 'Upload' to upload them to the selected source (if available)
4. Tap the button 'Accept' to apply the selection to the multimedia block
Additional options will be shown based on the selected file type (image, audio or video).

A preview of the selected media-file will be shown if ZBOS control is connected locally to the device or if the file has been uploaded to the user’s cloud account.

Settings for image files

Tap the option 'Selection' to change the file to be shown
Select the color for the background of the selected image (transparency) using a color wheel
Tap the option 'Image scaling' to select the scaling for the image (i.e. 'Center crop', 'Center inside' or 'Fit center')

Settings for audio files

Tap the option 'Selection' to change the file to be played.
Check the option 'Blocking' to continue the composition after the audio file has finished
If this option is unchecked, the composition will continue while the audio file is playing.
Check the option 'Loop' to repeat the audio file until the end of the composition or until a 'Stop audio' block is started.

By default, the option 'Loop' will be checked for an audio file.
If the option 'Blocking' is checked, the option 'Loop' will be disabled.

Settings for video files

Tap the option 'Selection' to change the file to be played.
Check the option 'Blocking' to continue the composition after the video file has finished
If this option is unchecked, the composition will continue while the video file is playing.
Check the option 'Loop' to repeat the video file until the end of the composition or until a 'Stop video' block is started.

By default, the option 'Blocking' will be checked for a video file.
If the option 'Blocking' is checked, the option 'Loop' will be disabled.

Start app block

Function

This block will start an app installed on the device

Settings

Enter a search term to narrow the list of available apps
Tap the app to start from the (searched) list
Check the option 'Blocking' to stop the composition from continuing while the app is being shown
Tap the button to add a key/value pair to send to the app
Enter the required values in the newly available options (e.g. key:'data_source'; value:'example')
Tap the icon to remove the added data from the block

Change kiosk block

Function

This block will change the current dataset used by the kiosk.

Settings

It is highly recommended to add a 'wait' block after the 'Change Kiosk' block to allow the device to apply the new dataset before the composition ends.

The currently selected dataset to apply is shown at the top of the list
Enter a search term to narrow the list of available datasets on the connected device
Tap a dataset in the (searched) list to select it

Stop media block

Function

This block stops the currently playing media-type

Settings

Tap the type of media to stop to display a modal with the following options:
- Audio
- Video
- Image
- Text overlay

Domotics action block

Function

This block allows the ZBOS device to send a command to (a) device(s) registered on a home automation system.

See the chapter Home Automation for more information on configuring domotics.

Settings

The following settings will be shown when the block is added to the timeline (or when the settings are opened for the first time):

The shown categories are collected across the configured domotics services (for example, home assistant + tuya configuration).

Tap the category to view the list of registered devices (e.g. 'Lights'):

Tap the button to return to the category selection screen
Optionally, enter a search term to narrow the list
Navigate to the configured domotics system (if applicable)
Tap the button next to the device to add it to the composition block and view the configurable options

Tap which action should be taken (e.g. 'turn device on', 'toggle', …)
Configure additional properties for the configuration (e.g. toggle the option on for color in HS to allow additional color configuration the color of an rgb light)
Tap the button next to the device to remove it from the list
Optionally, tap the button to add an additional domotics action to the same block

Domotics wait block

Function

This block allows the ZBOS device to wait for a change in a device registered on a home automation system before continuing with the composition.

See the chapter Home Automation for more information on configuring domotics.

Settings

The following settings will be shown when the block is added to the timeline (or when the settings are opened for the first time):

Tap the device or event for the composition block to view the available categories:

Tap the category to view the list of registered devices (e.g. 'Lights'):

Tap the button to return to the category selection screen
Optionally, enter a search term to narrow the list
Navigate to the configured domotics system (if applicable)
Tap the button next to the device to add it to the composition block and view the configurable options

Tap the button next to the device to remove it from the list
Select whether the block should continue on any change in the device ('on change') or if specific conditions need to be met ('on condition') before the composition will continue
Enter the (optional) conditions for the composition to continue (including additional and/or options).
Add an additional 'OR' device for the composition to wait on

A device can only be registered once per domotics wait block

Example

In the example above, the composition will continue íf:

The 'Example light' is (turned) off OR
The 'Example button' is pushed

Domotics state block

Function

This block allows the ZBOS device to retrieve the state of a current device registered on a home automation system. This information can be retrieved in a new variable in the rest of the composition.

See the chapter Home Automation for more information on configuring domotics.

Settings

The following settings will be shown when the block is added to the timeline (or when the settings are opened for the first time):

The shown categories are collected across the configured domotics services (for example, home assistant + tuya configuration).

Tap the category to view the list of registered devices (e.g. 'Lights'):

Tap the button to return to the category selection screen
Optionally, enter a search term to narrow the list
Navigate to the configured domotics system (if applicable)
Tap the button next to the device to add it to the composition block and view the configurable options

Tap the button to remove the device from the list
The name of the variable containing the current state of the selected device is shown
Tap the icon to select a different device

Advanced blocks

If Else

Function

This block will create multiple paths for the composition to take based on an if/else equation.

For more information, see wikipedia

Settings

Enter the first if/else equation (e.g. 'if user says good morning')
Tap the '+ And/Or' to add an additional to first if/else equation (e.g. 'if the current time is before noon')
Tap the icon to remove the additional condition(s).
Optionally, tap the button 'Else if' to add a another path for the composer
Optionally, enter the second if/else equation for the path to tak (e.g. 'if it is currently noon')
Tap the icon to remove the equation.
Finally, the path for the composition to take if none of the equations are matched is shown

Samples

High-low game

The following instance shows a case of how to program a basic game of high-low:

The composition can be downloaded here

The setting for the if/else block in this case is the following:

The first equation translates to: 'If the generated number is higher than the input from the user, use path 1'.
The second equation translates to: 'If the generated number is lower than the input from the user, use path 2'.
If none of the equations above are matched, Path 3 will be taken (and the composition will end).

Advanced Loop

Function

This block will use loop 'path 1' while the condition is met.

The blocks linked to 'Path 1' will repeat while the conditions of the loop are met. Afterward, the blocks linked to path 2 will be played.

Settings

For loop (default)

Select the option 'For loop' at the top of the modal
Enter the name and initial value for the variable (e.g. i = 0)
Tap the {x} icon to view the list of linked variables and add them to the required fields.
Enter the condition for the loop (e.g. i < 5)
Tap the currently selected operator to change it (e.g. '+' or '-')
Tap the {x} icon to view the list of linked variables and add them to the required fields.
Enter the operator to apply at the end of the loop (e.g. i+1 ) Tap the currently selected operator to change it (e.g. '+' or '-')
Tap the {x} icon to view the list of linked variables and add them to the required fields.
- While loop

Select the option 'While loop' at the top of the modal
Enter the condition for the while-loop (e.g. 'while loop == '1')
Tap the currently selected operator to change it (e.g. '+' or '-')
Tap the {x} icon to view the list of linked variables and add them to the required fields.

Usage

Link up all earlier blocks containing variables to be used in the loop (e.g. a variable set to '0' for the while loop)
Set the loop-conditions
Link the blocks to be looped to path 1 and place a Stop-block at the end
Link path 2 for the rest of the composition

The name of the variable used for the loop condition must be unique and can only be used by the blocks in path 1.

Loop block samples

For loop

This sample will play the looped block four times:

The composition can be found here

The settings for the loop block are:

The equivalent of the code for(i=1;i⇐5;i++) has been entered in the block.

While loop

This example will play the loop while the user hasn’t entered the 'lucky number':

The composition can be found here

The equivalent of 'while (loop==true)' is shown in this example.

The variable 'loop' has been defined in the variable-block as a '1' (or the equivalent 'true') in the variable-block at the start of the composition.

Health Certificate

Function

This block is used to scan health certificate QR codes, such as the EU Digital COVID Certificate.

The aim of the EU Digital COVID Certificate is to facilitate travel, helping to exempt holders from restrictions such as quarantine and to provide safe access to areas like concerts, festivals, theaters and restaurants.

The EU Digital COVID Certificate serves as proof that a person has been vaccinated against COVID-19, has recently received a negative COVID-19 test, or is protected against the disease after being infected (recovery valid for up to 6 months).

Settings

The settings for the health certificate block can be tweaked to conform with local requirements, as these tend to vary depending on the country or region of use.

Minimum number of days since the last vaccination
Maximum hours since last PCR test
Maximum hours since the last antigen test
Maximum days since recovery from infection
Allowed vaccine types
(this list will be need to be updated via a software update in case new vaccines become available)
Allowed test types
(this list will be need to be updated via a software update in case new tests become available)
Signature validation: verify the validity of a QR code by checking if it is officially signed (requires internet connection).
Timeout: how many seconds to wait until reading of the QR code is cancelled when not QR code is presented.
Info section, describes the different outputs of this block:
- First output is the flow for when the contents of the QR code is considered safe;
- Second output is the flow for unsafe QR code;
- Third output is the flow when a timeout occurs (when no QR code was presented).

Usage

A demo composition is available on ZBOS powered devices (with RAIL 2.5.0+ installed), displaying the default options for vaccination records as used in Belgium:

The health certificate has 3 output connectors:

If the certificate is safe, the output will be used.
If the certificate is unsafe, the output will be used.
If no certificate is shown within the set time range, the output will be used.

Information in the certificate

Global information

This information is contained in every certificate:

Name
Date of birth
EU Member State that is issuing the certificate
Unique identifier or code of the document

Vaccination certificate

Type of vaccine
Vaccine’s manufacturer
Number of doses
Date of vaccination

Test certificate

Type of test taken
Date and time of the test
Test center
Result

Recovery certificate

Date of positive test result
The issuer of the certificate
Date of issuance
Validity date

Information in the payload

When the QR is read out by ZBOS Composer, the information is placed in a {health_certificate} variable which can be used for further processing or user feedback.

The data structure goes like this:

{
	"health_certificate": {
		"raw_content": {

		},
		"formatted_content": {
			"person": {
				"given_name": "The person's given name",
				"family_name": "The person's family name",
				"given_name_transliterated": "A transliterated version of the person's given name",
				"family_name_transliterated": "A transiterated version of the persons family name",
				"name_mrz_type1": "MRZ Type 1 version of the name",
				"name_mrz_type2": "MRZ Type 2 version of the name",
				"name_mrz_type3": "MRZ Type 3 version of the name",
				"name_mrz_be": "MRZ version of the name as used on Belgian ID",
				"name_mrz_sk": "MRZ version of the name as used on Slovakian ID",
				"name_mrz_fr": "MRZ version of the name as used on a French ID",
				"date_of_birth": "The person's date of birth"
			},
			"vaccination": {
				"target_disease": "Which disease this certificate is about",
				"vaccine": "The name of the vaccine",
				"medicinal_product": "The contents of the vaccine",
				"manufacturer": "The manufacturer of the vaccine",
				"dose_number": "Dose number",
				"dose_total": "Dose total",
				"date": "Date of the vaccine",
				"country_code": "Issueing country code",
				"country": "Issueing country"
			},
			"test": {
				"target_disease": "Which disease this certificate is about",
				"test_type": "The type of test taken",
				"test_name": "The name of the test",
				"manufacturer": "The manufacturer of the test",
				"sample_date": "The date of the test",
				"test_result": "The result of the test",
				"testing_centre": "The testing centre where the test was taken",
				"country_code": "Issueing country code",
				"country": "Issueing country"
			},
			"recovery": {
				"target_disease": "Which disease this certificate is about",
				"first_result": "Date of the first negative test result",
				"valid_from": "Start date of recovery certificate",
				"valid_until": "End date of recovery certificate",
				"country_code": "Issueing country code",
				"country": "Issueing country"
			}
		}
	}
}

The formatted content can be used in Composer to perform further actions, for example display the name of the person, or compare to identity information.

For compatibility with a broad variety of international travel documents, different types of MRZ name formats are provided:

Key Type Location (0 based, not incl. last) Max. length Example

Key	Type	Location (0 based, not incl. last)	Max. length	Example
`name_mrz_type1`	Type 1	Row 2, column 0-30	30	SOME<SURNAME<<FIRSTNAME<SECOND
`name_mrz_type2`	Type 2	Row 0, column 5-36	31	SOME<SURNAME<<FIRSTNAME<SECONDN
`name_mrz_type3`	Type 3 (eg.: internation passport)	Row 0, column 5-44	39	SOME<SURNAME<<FIRSTNAME<SECONDNAME<THIR
`name_mrz_type_be`	Belgian (similar to Type 1, but always truncates the third name regardless of available space)	Row 2, column 0-30	30	SOME<SURNAME<<FIRSTNAME<SECOND
`name_mrz_type_sk`	Slovak	Row 0, column 5-34	29	SOME<SURNAME<<FIRSTNAME<SECON
`name_mrz_type_fr`	French	Surname: row 0, column 5-30 Given name: row 1, column 13-27	25 14 (= 39 + 2 = 41)	SOME<SURNAME FIRSTNAME<SECO ⇒ SOME<SURNAME<<FIRSTNAME<SECO

name_mrz_type1

Type 1

Row 2, column 0-30

SOME<SURNAME<<FIRSTNAME<SECOND

name_mrz_type2

Type 2

Row 0, column 5-36

SOME<SURNAME<<FIRSTNAME<SECONDN

name_mrz_type3

Type 3 (eg.: internation passport)

Row 0, column 5-44

SOME<SURNAME<<FIRSTNAME<SECONDNAME<THIR

name_mrz_type_be

Belgian (similar to Type 1, but always truncates the third name regardless of available space)

Row 2, column 0-30

SOME<SURNAME<<FIRSTNAME<SECOND

name_mrz_type_sk

Slovak

Row 0, column 5-34

SOME<SURNAME<<FIRSTNAME<SECON

name_mrz_type_fr

French

Surname: row 0, column 5-30
Given name: row 1, column 13-27

25
14
(= 39 + 2 = 41)

SOME<SURNAME
FIRSTNAME<SECO
⇒ SOME<SURNAME<<FIRSTNAME<SECO

For using these values in a composition, use variable names like this: {health_certificate.formatted_content.person.name_mrz_type1}.

Start

Function

This block is used to indicate the start of the composition.

This block is required for each advanced composition, and has no settings.

A warning will be shown if no start-block is present when starting an advanced composition.

Stop

Function

This block is used to indicate the stop of (a branch of) the composition.

This block can be linked to multiple times.

API Call

Function

This block will retrieve information using an API Call. (See here for more information on API)

Settings

Enter the name of the variable containing the reply of the API request (e.g. 'api_result')
Tap the button {x} to insert a variable at the cursor location.
Tap the button 'Add {x}' to insert a variable at the cursor location
Complete the API endpoint using plain text and/or variables
Enter optional parameters for the API request (optional).
Enter optional header information for the API request (optional).
Enter a message for the API request (optional).

The list of parameters will expand or shrink once a parameter has been entered or removed.

Usage

Enter a variable name
Enter the endpoint and other required information (i.e. parameters and header)
If the response is JSON-formatted, the information retrieved can be used in other blocks (see further).

The website http://www.mocky.io can be used to send/receive API calls for testing/evaluation purposes.

A possible example of a JSON-file the API will return:

{
   "location": "Oostende",
   "company":
   {
	"name": "Talemate",
	"address": "Archimedesstraat 17",
       "field":"Robotics, IoT and metaverse",
       "hours":
       {
           "mondays":"08:00 - 18:00",
           "tuesdays":"08:00 - 18:00",
           "wednesdays":"08:00 - 18:00",
           "thursdays":"08:00 - 18:00",
           "fridays":"08:00 - 18:00",
           "saturdays":"closed",
           "sundays":"closed"
       }
   }
}

Data retrieval

The following variables can be used in the following blocks of the composition to retrieve specific JSON-related data:

Variables	Output
{test.location}	Oostende
{test.company.name}	Talemate
{test.company.hours.mondays}	08:00 - 18:00
{test.company.hours[0]}	08:00 - 18:00

Variables

Output

{test.location}

Oostende

{test.company.name}

Talemate

{test.company.hours.mondays}

08:00 - 18:00

{test.company.hours[0]}

08:00 - 18:00

Math Formula

Function

This block will calculate a variable based on the math formula entered.

If the math formula isn’t valid, the composition will skip this block altogether.

Settings

Enter the name of the variable to contain the value of the math operation (e.g. 'math_result')
Tap the button {x} to insert a variable at the cursor location.
Tap the button 'Add {x}' to insert a variable at the cursor location
Enter the equation for the variable in the formula field
Tap the button 'Add operator' to add a valid math operator to the equation
Tap the button 'Add function' to add a valid math function to the equation

Only the listed operators and functions are supported.

Allowed operators

Some operators can be used directly (e.g. {variable} * {variable}). The following list details all operators that can be used directly.

Operator	Function
+	addition
-	subtraction
*	multiplication
/	division
-	sign operator (e.g. -4)
%	modulo

Operator

Function

addition

subtraction

multiplication

division

sign operator (e.g. -4)

modulo

Built-in functions

Other than using mathematical operators, the following functions can also be used to calculate a result. These functions must be used as follows: <function>(<argument>). E.g. sqrt(4) will result in a variable with the value 2.

Function

Calculates

abs

absolute value

acos

arc cosine

asin

arc sine

atan

arc tangent

cbrt

cubic root

ceil

nearest upper integer

cos

cosine

cosh

hyperbolic cosine

exp

Euler’s number raised to the power (e^x)

floor

nearest lower integer

log

logarithmus naturalis (base e)

log10

logarithm (base 10)

log2

logarithm (base 2)

sin

sine

sinh

hyperbolic sine

sqrt

square root

tan

tangent

tanh

hyperbolic tangent

signum

signum function

To use already existing variables, enter them between curly brackets (e.g. {variable 1}) to use them in the equation.

Leave spaces between the operators to calculate the correct values.

Samples

Calculate the circumference of a circle

In the following composition, the device will calculate the circumference of a circle up to two decimal points.

The user is asked to input the radius of the circle and the device will calculate the circumference of the circle.

To trim the result down to two decimal points, the function ceil() is used on the result * 100 to round it up and then divided by 100 to return the digits after the decimal point.

Math Operations

Function

This block will perform basic calculations on 2 variables. For example: <Var3> = <Var2> + <Var1>.

Settings

Enter the equation for the operation (e.g. 'sum' = 'var1' + 'var2')
1. Enter the name for the variable containing the result of the equation
  Tap the {x} icon to view the list of linked variables and add them to the required fields.
2. Enter a number or variable for the first operand
  Tap the {x} icon to view the list of linked variables and add them to the required fields.
3. Enter the operator (+,-,*,/,mod or ^)
4. Enter a number or variable for the second operand Tap the {x} icon to view the list of linked variables and add them to the required fields.
Tap the button to add another equation to the list

Samples

Even/Odd

The following example calculates whether a number entered by the user is odd or even:

The composition can be found here

The current operation is shown as:

The result of the equation is stored in the variable 'result'
The input from the user is used as the first operand from the equation
The 'mod' operator is used to calculate the result
The second operand is '2' to determine if a variable can be divided by 2

Random number

Function

This block will generate a number between a minimum and maximum value.

Settings

Enter the name of the variable containing the randomly generated result
Tap the {x} icon to view the list of linked variables and add them to the required fields.
Enter a number or variable for the minimum value to be used by the generator
Tap the {x} icon to view the list of linked variables and add them to the required fields.
Enter a number or variable for the maximum value to be used by the generator
Tap the {x} icon to view the list of linked variables and add them to the required fields.
Tap the to add another number to be generated

The minimum and maximum value are included as possible results of the generator.

Block list

General usage

Restrictions

Categories

Simple blocks

Go to POI block

Head-motion block

Gym block

Speech block

Wait for voice command block

Dance block

Animation block

Emotion block

Wait block

Wait on sensor

Mqtt block

Wait for QR code block

Wait for monitoring event

Mqtt connection block

Settings block

Get device settings

Update device settings

Reset device settings

Examples

Example settings block

Monitoring block

Wait for webhook block

Open web page block

Wait for face block

Motion detection block

Text input block

Variables

Text overlay block

String operations

Video call

Date/time block

Multimedia block

Start app block

Change kiosk block

Stop media block

Domotics action block

Domotics wait block

Domotics state block

Advanced blocks

If Else

Samples

High-low game

Advanced Loop

Loop block samples

For loop

While loop

Health Certificate

Information in the certificate

Global information

Vaccination certificate

Test certificate

Recovery certificate

Information in the payload

Start

Stop

API Call

Math Formula

Allowed operators

Built-in functions

Samples

Calculate the circumference of a circle

Math Operations

Samples

Even/Odd

Random number