How to Use the HC-SR04 Ultrasonic Sensor with Raspberry Pi (Python Tutorial with Multi-Threading)

[@blacksky1974]

What is the purpose of those to lines: signal(SIGTERM, safe_exit).. ?

[@m.heidenreich]

This code handles safe program shutdown procedures, where GPIO ports are restored to default. I explain the why and how in a dedicated video: kzbin.info/www/bejne/eqmao5eopq-rndU

[@sergehulne]

Would this code, which uses threads, run on a Raspberry Pi Nano (via Micropython) ?

[@m.heidenreich]

Unfortunately no, as this example relies on gpiozero library which is designed specifically for regular Raspberry Pi.