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ESP32-Rainmaker-Multidevice/multi_device/README.md

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+# Multi Device Example
+
+## Build and Flash firmware
+
+Follow the ESP RainMaker Documentation [Get Started](https://rainmaker.espressif.com/docs/get-started.html) section to build and flash this firmware. Just note the path of this example.
+
+## What to expect in this example?
+
+- This example just demonstrates how you can have multiple devices on the same board.
+- It has 4 devices
+    - Switch
+    - Lightbulb
+    - Fan
+    - Temperature Sensor
+- It uses the BOOT button and RGB LED on the ESP32-S2-Saola-1/ESP32-C3-DevKitC board to demonstrate a switch, and the esp timer to demonstrate the temperature sensor.
+- The LED state (green color) indicates the state of the switch.
+- Pressing the BOOT button will toggle the state of the switch and hence the LED. This will also reflect on the phone app.
+- Toggling the button on the phone app should toggle the LED on your board, and also print messages like these on the ESP32-S2 monitor:
+
+```
+I (16073) app_main: Received value = true for Switch - power
+```
+
+- The temperature value is changed by 0.5 every minute.
+- It starts at some default value (25.0) and goes on increasing till 99.5. Then it starts reducing till it comes to 0.5. The cycle keeps repeating.
+- You can check the temperature changes in the phone app.
+- Lightbulb and Fan are dummy devices, but you can try setting the values from the phone app and see them reflect on the ESP32-S2 monitor.
+
+### LED not working?
+
+The ESP32-S2-Saola-1 board has the RGB LED connected to GPIO 18. However, a few earlier boards may have it on GPIO 17. Please use `CONFIG_WS2812_LED_GPIO` to set the appropriate value.
+
+### Reset to Factory
+
+Press and hold the BOOT button for more than 3 seconds to reset the board to factory defaults. You will have to provision the board again to use it.
+