Introduction: Solder USB Power Cable to Raspberry Pi

Picture of Solder USB Power Cable to Raspberry Pi

Micro USB plugs are rare in my household, but a bunch of USB cables have been lying around. So maybe it is possible to solder a USB cable directly to the Raspberry PI? Yes it is, Paul Bealing describes it very well here: http://www2.pmb.co.nz/blog/?p=1767.

Step 1: Cut the USB Cable, Remove the Data Lines

Picture of Cut the USB Cable, Remove the Data Lines

We just need the red and black power wires from the USB cable. Remove about 5cm of isolation and cut the white and green data wires. 

Step 2: Wrap the Strain-relief

Picture of Wrap the Strain-relief

To avoid the wires to be torn away, the cable is wrapped once around the video out. Please keep the orientation as shown in the image to avoid unwrapping. Then plunge the two wires through the hole in the middle of the board.

Step 3: Solder the Supply

Picture of Solder the Supply

Finally solder the wires to the board. Red (+5V / Vcc) is connected to the polyfuse F3 and black (0V / Gnd) to the protection diode D17. - Enjoy.

Comments

ElegantAndrogyne (author)2014-04-06

Why not use the GPIO pins 2 or 4 for +5VDC and 6 or 9 for GND?

I want to keep the fuse in action.

Actually, that's exactly the reason why you want to use pin 2/4 and 6/9, when you want to make something much heftier/secure than the polyfuse, especially when higher voltages are involved like in automotive applications (you really want serious filters there) or when you need stronger (but related) power sources (the 2.5" hard disk or your Arduino/Servos kinda need to be on the same GND, but powering from the USB or the GPIO (suicidal option) is going to leave your RPi dry...)

hillary3 (author)2017-02-24

works fine, i used same model in this guide.

Victor805 (author)2016-04-18

Thanks, it worked with my Raspberry model B

LP700-4 (author)2015-05-20

It works.

ochâtelain (author)LP700-42015-05-20

Thank you for the feedback

fourleggedostrich (author)2015-01-26

Anyone know how to do this with the model A+ (or B+)?

Amaury Van Espen (author)2014-07-12

Easy to DIY. Very usefull with an USB HUB or switchable power supply

Erisick (author)2014-04-09

is this for power?

ochâtelain (author)Erisick2014-04-16

To supply power

Hoagie (author)2014-04-06

You can also feed power into the GPIO with 5V on Pin 4 and Gnd on Pin 6, but BEWARE, it bypasses the input fuse. It does avoid soldering to the Pi though.

msmiley2 (author)2014-04-03

no micro USB cable available but lightening, everything is possible in DIY oO

app0 (author)msmiley22014-04-06

Yeah, especially looking at the prices of these lightning cables, lol.

Offtopic: woah, i still have that Shana userpic here.

Obi-Wahn (author)2014-04-06

And if you solder a Mini-B-USB-Plug onto the PI, you just need to connect that cable then to the PI and there you have it: infinite powered PI

xD

LeeG (author)2014-04-03

Probably of more use for compact model a projects than for the model b.

Penolopy Bulnick (author)2014-04-02

What happens to the white and green ones? How come you do not need them?

They are Data cables, no useful voltage comes from them.

jbrown120 (author)2014-04-01

Awesome for saving space

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