Hi all, this is my first pi project and had a few questions before ordering everything to make the power bar.
1. Is the uln2803 needed if you are using a power relay?
2. Is the 12v power needed if it is not used by the 8 channel power relay? I know it potentially needed for dosing pumps... what else requires 12v? Can i skip it for now?
3. Is there a 120v to 5v step down module? I am in Canada, Would be the same as USA mains. I want to make a 3d printed power bar that only requires a inlet for db9 and mains.
Using pi zero 2
Thank you so much in advance!
1. Is the uln2803 needed if you are using a power relay?
2. Is the 12v power needed if it is not used by the 8 channel power relay? I know it potentially needed for dosing pumps... what else requires 12v? Can i skip it for now?
3. Is there a 120v to 5v step down module? I am in Canada, Would be the same as USA mains. I want to make a 3d printed power bar that only requires a inlet for db9 and mains.
Using pi zero 2
Thank you so much in advance!