A CO (carbon monoxide) detector for the garage. Working on gasoline vehicles and making them run well, does produce a lot of stray CO, which can be a health hazard, hence the need for this project. Basic requirements include: an audible signal if a certain ppm (parts-per-million) CO threshold is met; a screen able to show you the current reading; a proximity sensor, able to activate said screen (easy way to activate screen, if hands are dirty), which would later timeout after a certain amount of time.
- An Aliexpress Arduino Nano clone
- MQ-7 Carbon Monoxide detector (hasn't arrived yet)
- GP2Y0D810 infrared proximity sensor
- 16x2 screen
- Buzzer