Don't.Please, don't.Are you going to automate reading the tanks test status too?Way, way too dangerous.
My old compressor had a pressure switch on it that would turn it off. It was adjustable.You will either need a separate switch for each pressure level or something like a digital gauge with a serial output hooked up the the arduino. ( or just a pressure sensor instead of 3 pressure switches).If you use the 3 pressure switches then just use a 3 way switch to decide on which switch to activate by. A 3 way switch is way easier and cheaper to implement than an Arduino.But if you do use an Arduino you may as well add in a display and have it act as an hour meter too. Go a bit further and chuck a Nitrox/Tx blending stick on it with the O2 sensor feeding the Arduino too.
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16