geekengineer
Member
So far nothing has a huge draw
Not sure about the network shield but:
Each relay 2.15mA (x8.)
Sr04 6mA
Lcd. 2.75mA
Ok what about the relay coils then how much current are those using? did you try making those totally separate supply? I would power the relay coils with your LM7805 and use the USB power for your arudinio for instance. maybe it's still drawing too much power for everything. Maybe check and make sure you don't have a wrong connection on your jumpers??
I don't know I know that network shield does get fairly hot so it probably uses a fair amount of power too. I haven't had it dim out on me like you have, but then again I wasn't using the 5V relay board. I used the relays in the SR-8 powered with separate 12V supply and driving with that darlinton buffer (forget PN) .
But I assume others have done what your trying without issues.