Upload the sketch, and then monitor serial. The example sketch will calibrate the device over 15 seconds, and then print the carbon monoxide ppm once every second to the serial console. In the MQ7 ...

You mostly do not need to worry about pitfalls of concurrent processing (races, deadlocks, livelocks, resource sharing, etc.). The fact of cooperative processing takes care of such issues by design.

This system uses a colour-changing LED (RGB LED/tri-colour LED) that switches to a new colour every 5 seconds. Simultaneously, the colour name is displayed on an OLED mini screen (SSD1306). This ...

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