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Powering the Device

A project log for Pi/Arduino Prototyping

An all-in-one development platform featuring a Raspberry Pi, an Arduino, a HDMI display screen and a breadboard area.

Craig HissettCraig Hissett 04/12/2016 at 15:001 Comment

Now that I have found a bit of momentum I am keen to keep it going, so I am just doing a quick post to cover a little progress.

Needing 12v for the screen and 5v for the Pi and arduino and any other devices I may connect in future, I have always wondered the best way to power everything from one input; is it best to pump 12v in and step down for the 5v devices or vice versa?

Anyhow I was digging through my bits and bobs and I found something ideal for this (see picture below). A variable power module.

I ordered two of these little beasties from Ebay many moons ago. They were cheap; and it turns out thy were cheap because they were in kit form. Lacking confidence in soldering so many parts in (read: lazy) I ended up not using them. They've come in handy now!

The boards themselves have a barrel jack or screw terminals for 12v in, and then has a series of screw terminals on board; a set for 12v out, a set for 5v out, and one set for a variable voltage, adjustable onboard using a tiny flathead screwdriver.

Picture (from a new angle for @Stefan Lochbrunner's enjoyment :-) ):

The above picture shows The Pi (Just a B+ for now) on the lower level, and the screen driver on the top deck, and to the right of it, my power module.

Over the next few days I will hopefully get this wired together, but first i need to get the screw holes and tabs adjusted so the case all fits together nicely, then create a frame/bezel for the screen to make it fit the hole better, and adjust the holes to the side of the screen so the screen driver buttons can be accessed.


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Stefan Lochbrunner wrote 04/12/2016 at 19:17 point

:)

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