Tutorial Part 1 Electronics&Relais for oxygen generator

For more info on our DIY oxygen generators: fml.ethz.ch/Ox...

[@gohilhardik6955]

Can I use 5/2 solenoid valve

[@ABTcorp]

Plz need programme arduino & schematic

[@naveen_yadav]

Really thanks

[@iqbalhossain3518]

Very very thanks