I am trying to use 2 channel relay module. with one channel relay, there is no problem, but with 2 channels it doesn't work properly. After working some while whether pneumatic valves start blinking(works and stops) or the ar4 software stops working.
I tried 5 channel relay module and try to use 2 different relay module separately as well.
Any idea?
pneumatic valves wired with 24v. signals go 5v via arduino.
The problem occurs when I try to feed two relays by one power adapter. When I feed each device, which connected to relays, by different power adapter, no problem occurs.
Consequently, I solved the problem by using two different power adapters.
Please help if someone finds a way using by one adapter.