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bb_goto(x, y, z)

xx y z3

xx y z2

yx y z2

xx y z

zx y z15

zx y z45

bb_pointto(x, y, z)

zx y z

circlecircle triangle square semicircle line point sprite positions

shapeshape movement1

shapeshape movement0.5

shapeshape movement

var_get(name)bb_stack

d

1Connect to a broker The options are not required but can be filled if needed 1. username (some brokers need this) 2. password (some brokers need this) 3. keepalive (default time is 60 seconds but some brokers need a shorter time) 4. connection callback (ringed set of scripts to be run when connection is made or remade) ADVANCED: The brokers offered in the menu are accessed using default ports and basepaths (if needed). If accessing other brokers, the complete urls should be formed like this: siteURL:port/basepath e.g mqtt.eclipseprojects.io:443/mqtt It is possible to have more than one connection to the same broker, for instance, using two different user/pass accounts simultaneously. To do this, add a connection id at the end of the broker: e.g mqtt.eclipseprojects.io:443/mqtt|1

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.net​ ​ 60optionsjsonusername1password2keepalive3mqt_connect(broker,callback,options)connectingconnectedSubscribe to a topic on a broker Make sure you have already run an MQTT connect block before using this one You should add a script to be run inside he grey ring. It will be run each time a message is received If you click on the arrow on the grey ring twice, you can use #1 and #2 inside your script. #1 will contain the received payload #2 will contain the received topic name The options are not required but can be filled if needed 1. Subscribed QoS (0,1 or 2) Note this will be downgraded if it exceeds the QoS of the stored message held on the broker 2. Binary mode (boolean) Default (false) - payload is returned as text If true, payload returned as single column list of values in the range of 0 to 255..

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netname0 falsePublish a message to an MQTT broker The options are not required but can be filled if needed 1. QoS (quality of service 0,1 or 2 - see https://www.emqx.com/en/blog/introduction-to-mqtt-qos) 2. Retain flag (boolean) 3. Binary mode (boolean). Default (false) - the payload is published as text If set to true then payload is expected to be a single column list of values in the 0 to 255 range and is published to the broker as a buffer of bytes. Note: If the payload is a list and you don't set the buffer mode option, it will be automatically be converted into JSON and sent as text.

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netnamehello0 false falsenumbermqt_pub(broker,topic,payload,options)

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netname

allall broker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netOptions: 1. Sub binary mode (boolean) Default (false) - received payload is returned as text. If true then subscribed, received payload is returned as single column list of values in the range of 0 to 255.. Default (false) - it is returned as text 2. Pub binary mode (boolean). Default (false) - the payload is published as text. If set to true then published payload is expected to be a single column list of values in the 0 to 255 range and is published to the broker as a buffer of bytes. Note: If the payload is a list and you don't set the buffer mode option, it will be automatically be converted into JSON and sent as text

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netname/#false falseerr_resetcallbackTopiclast@2received payloadreceived topic01The options are not required but can be filled if needed. 1. Append response topic (boolean): If true, the response topic is added at the end of the call topic after @ sign. The default condition (true) response topic is added. 2. Sub binary mode (boolean) Default (false) - received payload is returned as text. If true,then the subscribed, received payload is returned as a single column list of values in the range of 0 to 255.. 3. Pub binary mode (boolean). Default (false) - the payload is published as text. If set to true then published payload is expected to be a single column list of values in the 0 to 255 range and is published to the broker as a buffer of bytes. Note: If the payload is a list and you don't set the buffer mode option, it will be automatically be converted into JSON and sent as text

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netnamename2hellotrue false falsereceived payloadreceived topic023This is a simple echo example. Topic can be used to filter the response.

hellonameThe response topic should be a unique value for each call e.g. use timer The options are not required but can be filled if needed 1. Timeout value - default is 3 seconds 2. Append response topic (boolean): If true, the response topic is added at the end of the call topic after @ sign. The default condition (true) response topic is added. 3. Sub binary mode (boolean) Default (false) - received payload is returned as text. If true, subscribed, received payload returned as single column list of values in the range of 0 to 255.. Default (false) - it is returned as text 4. Pub binary mode (boolean). Default (false) - the payload is published as text. If set to true then published payload is expected to be a single column list of values in the 0 to 255 range and is published to the broker as a buffer of bytes. Note: If the payload is a list and you don't set the buffer mode option, it will be automatically be converted into JSON and sent as text

broker.emqx.iobroker.emqx.io mqtt.eclipseprojects.io test.mosquitto.org broker.xmqtt.netnamename2hello3 true false falsereceived payloadreceived topic030false4timer0time in milliseconds1time in milliseconds1000Open (edit) this block to look at examples how to use the MQTT Extension blocks Background documentation: https://github.com/pixavier/mqtt4snap Last source code version (mqtt.xml and mqttExtension.js): https://gitlab.com/cymplecy/Snap/-/tree/master/libraries

Step 0: Connect to the brokerPubSub Hello World!Step 1: Subscribe to a topicpayloadreceived topicStep 2: Publish a messagepayloadtopicStep 1: Activate the responder as a simple subscriptionStep 2: Send a request and wait the answer.To execute the examples, single click on blocks, following the corresponding steps.Step 2 bis: Send a request and do not wait for the answerSynchronous client-server Hello World! with dynamic response topic (timer)Step 1: Activate the responderStep 2: Send a request (timer acts as idCall) and wait for the answerAsynchronous client-server Hello World! with dynamic response topic (timer)payloadtopicStep 2 bis: Send a request (timer acts as idCall) and do not wait for the answerAsynchronous client-server Hello World! with static response topic (name2)payloadtopicfalseSynchronous client-server Hello World! with static response topic (name2)Modify V10 variadic defaults to be able to work for blank and psuedo (false/true) boolean entries Blank defaults are set as zero width spaces which are removed when block is executed This is needed for the connect block The options are then checked to see if they should be boolean and if they are not aready a boolean value, then they are replaced with boolean true if default is text "true", otherwise boolean false.

errorthis blockDelete this and it will throw an error!

Catch errors. Runs the first script. If it succeeds, nothing else happens. But if it has an error (something that would otherwise result in a red halo around the block), then the second script is run, with the text of the error message that would have been shown in the variable ERROR.

pt:tenta executar _ e, em caso de erro _ , executa _ returnLET (FOO) BE (5) is equivalent to SCRIPT VARIABLES (FOO) SET (FOO) TO (5)

pt:cria a variável de guião _ com valor _

Executes a callback whenever a event is smitted by the server. Turns JSON/object data to a 2d list. Do not rename the upvar or you will not be able to use the event data.

Takes a text string as input, and reports a new text string containing all but the first character of the input.

pt:_ sem o primeiro caractere Takes a text string as input, and reports a new text string containing all but the last letter of the input.

pt:_ sem o último caractere

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