Customer:
Is it possible to purchase a hydrogen sensor (H2) card that comes complete with firmware and ready to use? Does it have an LED that signals the presence of gas? I need it for educational purposes and I’m not experienced with Arduino or similar platforms.
Originally submitted via email support on 22 February 2024. Migrated to the forum for community visibility.
Soldered Support:
The hydrogen sensor MQ8 breakout has an on-board LED which will light up when it detects gas, and will be off when it doesn’t. You can adjust the detection threshold with the potentiometer which is on-board. It requires only 5V and GND for powering. The A0 and D0 pins are available if you want to use them for additional functionality, but they are not necessary for basic operation.