Hi, I need to apply a DC voltage to a pair of electrodes, that will switch (+ turns to - and viceversa) every x seconds, the current design I have uses a 555 timer, but I would like to use an Arduino UNO instead. Any ideas? Would I still need relays for switching the output, or is there a built in f…

Switching voltage application

system October 26, 2012, 2:54pm 4

Yes, the max voltage would be 5V (variable) and I wouldnt need more than 20mA,

Thanks

Ilan