Difference: IoTViaMQTTAndCayenne (3 vs. 4)

Revision 42020-09-05 - UliRaich

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META TOPICPARENT	name="Exercises"

MQTT and Cayenne

Exercise 1:

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Write a program connecting to Cayenne. Observe that the dashboard is coming up.

Exercise 5:

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Write a program that sends dummy temperature values to Cayenne on channel 0. The temperature values should range from 0 to 50°C . Wait for 2 s minimum between each value.

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Write a program that sends dummy temperature values to Cayenne on channel 0. The temperature values should range from 25°C to 35°C (typical Ghanaian temperatures). Use the random number generator in MicroPython to make the values vary. Wait for 2 s minimum between each value.

Observe the widget coming up on the dashboard.

Fix the widget on the dashboard and change the widget parameters (e.g. the name).

Exercise 6:

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Add a gauge widget with ranges 0 .. 50 °C. Run your program sending the dummy temperatures and observe how the dashboard displays them.

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Add a gauge widget with ranges 0 .. 50 °C. Run your program sending the dummy temperatures and observe how the dashboard displays them.
Here is a screen dump showing the result:

Exercises 7:

Create a slider and a push button on your dashboard.

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As you can see, the LED is currently switched on

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As you can see, the LED is currently switched on.

Exercise 10:

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Create 4 sliders on the dashboard. The first one will select one of the 7 LEDs on the WS2812 RGB LED chain while the other 3 will select the red, green and blue component for the LED selected.

Exercise 11:

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Create 4 sliders on the dashboard. The first one will select one of the 7 LEDs on the WS2812 RGB LED chain while the other 3 will select the red, green and blue component for the LED selected. With the settings in the screen dump below we will get a light blue color on LED1 (top LED in the ring).

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Connect the GPS receiver to the ESP32 and send GPS position information to Cayenne.

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Uli Raich - 2020-09-02

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<--/commentPlugin-->

META FILEATTACHMENT	attachment="dashboard.png" attr="" comment="" date="1599224312" name="dashboard.png" path="dashboard.png" size="70247" user="UliRaich" version="1"

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META FILEATTACHMENT	attachment="ws2812Cayenne.png" attr="" comment="" date="1599314346" name="ws2812Cayenne.png" path="ws2812Cayenne.png" size="27644" user="UliRaich" version="1"
META FILEATTACHMENT	attachment="cayenneDummy.png" attr="" comment="" date="1599317251" name="cayenneDummy.png" path="cayenneDummy.png" size="27659" user="UliRaich" version="1"

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