The code starts by defining three constant variables that specify which Arduino pins connect to each component. The gas sensor's digital output connects to pin A2, the warning LED connects to pin A1, ...

It is designed with structure and APIs that are easily integrated to an Arduino Core. There are 2 type of supported cores: with and without built-in support for TinyUSB. Built-in support provide ...

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Can also pass NULL to use the default pin assignments (digital pins 0-7 on Adafruit Metro Express or Arduino Zero): Adafruit_NeoPXL8 strip(NUM_LED, NULL, NEO_GRB); The ... Microcontrollers compatible ...