Alexa and Raspberry Pi Demo (Part 2) – Listening to External Events

Today I want to keep on with the previous example. This time, I want to create one Alexa skill that listens to external events. The example that I've built is the following one:

I've got one ESP32 with a proximity sensor (one HC-SR04) that is sending the distance captured each 500ms to a MQTT broker (a mosquitto server).

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