2021 Jun 18, 11:43 AM
(2021 Jun 14, 01:11 PM)dan Wrote:(2021 Jun 13, 07:59 PM)HereComesTheRain Wrote:(2021 Jun 13, 01:53 PM)dan Wrote:Do I still need to connect the GND next to IN1 on the RELAY MODULE to the GND (-) on the BREAD BOARD?(2021 Jun 06, 10:09 PM)HereComesTheRain Wrote:(2021 Jun 06, 04:52 PM)dan Wrote: It is probably best to not connect the relay power supply to the breadboard. Use that to power the relay boards only.Do I need to connect the other GND next to IN1 on each of the RELAY MODULES to the - on the BREAD BOARD?
Yes. That completes the circuit with the bread board.
The power connections for the relay boards should be separate from the connections from the Pi except the ground from the Pi/shift registers should go to the ground next to IN1. You can use one set of power rails on the bread board for the relay board power as long as it is kept separate from connections from the Pi.
Hi Dan.
So are you saying that I need to connect the ground from the Pi to the BREAD BOARD?
Currently I DO NOT have the POWER or the GROUND from the Pi to the BREAD BOARD.
The standalone power supply is connected to the BREAD BOARD top power rail.
Is there an issue with two grounds connected to the BREAD BOARD, one from Pi and on from standalone power supply?
Thanks again for stepping me thru this.