Raspberry Pi GPIO
- https://www.balena.io/docs/learn/develop/hardware/gpio/#raspberry-pi
- https://www.npmjs.com/search?q=gpio
- https://www.npmjs.com/package/pi-pins
- https://github.com/balena-io-playground/balena-rpi-nodejs-basic-gpio
- https://www.balena.io/docs/learn/getting-started/raspberrypi3/nodejs/
- https://www.balena.io/blog/tag/etcher-featured/
Embedded Systems 