April 2018
Intermediate to advanced
248 pages
5h 31m
English
Content preview from Internet of Things with Raspberry Pi 3
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Executing the commands
Let's now start sending the commands from MQTT.fx client and see our car in motion.
To move forward, we publish the message forward on topic controlPi/cmd as shown in Figure 8.12.
Command:
Figure 8.12
On the Subscribe tab we will see the message move forward as acknowledgment sent back from the car as a confirmation that the car is moving forward now. Refer to the following screenshot:
Acknowledgment:
Figure 8.13
To move backward/reverse we publish command reverse; the car will start moving in a backward direction, the ...
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