I have a 12v 8 channel relay https://www.modmypi.com/raspberry-pi/relays-and-home-automation-1032/relay-boards-1033/8-channel-12v-relay-module which I want to connect to my RPi3 so I need an external power supply.

I watched this video https://www.youtube.com/watch?v=Ur0w7VeLX08 which is useful for a newbie like me but the power supply has female connections enter image description here

Do I need to / can I modify a supply myself to create one of these? I can't seem to find anywhere to purchase one.

  • Obviously it's possible to make a PSU with a custom connector if you cannot buy one. I don't quite get the question. Jan 14, 2019 at 12:07

1 Answer 1


Just did a quick google search, you can combine perhaps something like this https://www.pololu.com/product/2449 (DC Barrel Jack to 2-Pin Terminal Block Adapter)

DC jack to two pin

and then grab two male-female jumper wires e.g. Ebay

Jumper wires

  • Thanks for the reply. I was thinking of just stripping the wires in a 12v power supply and soldering on to female jumper cables. Do you think that is OK or is the adaptor you shared performing some additional function? Jan 13, 2019 at 23:10
  • Oh definitely DIY it it's just some electrons moving :) Since you used the word 'newbie' I assumed you might not have soldering equipment @StuartBrown
    – trishmapow
    Jan 14, 2019 at 0:02
  • 2
    All the gear, no idea ;-). Seriously though, thanks for your help, I couldn't really find anything online about how to power it Jan 14, 2019 at 0:18

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