How to connect a 12v/5v dc converter to a standard 12v plug? And still use the plug?

I need to power both a Raspberry Pi and a 12v touch screen from the same 12v source. I know that I can use a dc voltage converter (like this one: http://amzn.com/B00GQ4DTGQ) to step the voltage down to the 5v for the pi.

The power supply has the circular 12v adapter (e.g. http://amzn.com/B00GUBVI9K). My question is how to I attach the voltage converter to the 12 supply, and still be able to use the 12v supply for the touch screen?


iceng2 years ago

A DIY regulator and a PSWPYP ==> power splitter will power your Pi

-max-2 years ago

Just connect the 12V LCD panel directly to the 12V power supply, and connect the input of the buck converter (12V --> 5V converter) to the same rails, and the 5V output to the Pi.

You need either the right adaptor fot the end on the power supply, or do what I generally do, and cut it off and just connect the bare wires to aligator clips or another connector you have handy.

Either the proper way with another adapter and socket offer a connection or the quick and dirty way.

Quick and dirty would be to remove the insulation from the 12V cable and to solder in the cables for the converter.

Of course you need to pay attention to the polarity and make sure you insulate all again when done soldering - heat shrink is really good for this or self vulcanising silicone tape.