Raspberry PI power socket

Hi all,

I've recently received my Raspberry PI B type board and I'm starting working on it.

Since I'd like to use it in some embedded application I'm wandering if it is possible to power it through a different connector than the micro USB one.

Is the 5V present on GPIO connector usable to power the unit?

I tried to have a look at the schematics but, unfortunatelly, the supplied link does not work.

Thank you in advance

Bye

Maurizio

morgaine over 13 years ago

You're in luck, Maurizio. The Pi can be powered through pins 2 and 4 on the P1 header, and this provides better voltage regulation than powering through the micro-USB socket with its F3 polyfuse. Be careful though, since it's so easy to damage the hardware by accidentally touching adjacent 3.3V pins.

You're right that Element 14's link to its own copy of the schematic listed under Design Elements->Schematic on its main Raspberry Pi page is broken --

http://www.element14.com/community/docs/DOC-42993/l/raspberry-pi-single-board-computer?ICID=rasp_group

To Element 14 Support --- a website fix needed here please when you can.
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Former Member over 13 years ago in reply to morgaine

2 & 4 are both 5v currently, but only 2 is officially documented (if you can find Eben's blog post and even that changed a couple of days later), GND goes to pin 6.

I'm using these SSW-115-01-T-DSSW-115-01-T-D with various things soldered on to make it less likely to short flying leads to some other pin.

Something like MULTICOMP - 2226A-03 - CRIMP HOUSING, 1 ROW, 3 WAY MULTICOMP - 2226A-03 - CRIMP HOUSING, 1 ROW, 3 WAY is also suitable, problem is the required crimp tool costs more than the Pi !
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Former Member over 13 years ago in reply to morgaine

there is a working link to the schematic at the end of the first post
in this thread:

http://www.element14.com/community/thread/19261?tstart=0
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Former Member over 13 years ago

Example of how I get power into a Pi
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johnbeetem over 13 years ago

There's also a good link to the schematics at the RasPi Hardware Wiki, along with some nice board photographs: http://elinux.org/Rpi_Hardware#Schematic_.2F_Layout.
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maudil over 13 years ago

Hi all,

thank you very mutch for your useful answers. I've found all the necessary informations.

Ciao
Maurizio
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Former Member over 13 years ago in reply to maudil

Just for your info... I notice the folks who've already sent a pi to 'space' (40km in weather ballon) had robustly soldered wires going into TP1 and TP2.

http://www.daveakerman.com/?p=592
".... I used special thermal adhesive to glue heatsinks to the USB/ETH chip and to the 3.3V regulator. Both get warm but not hot normally, and I feared that at 1% atmosphere (so less convection) they’d possibly get too hot. You can also see 2 wires carrying 5V directly to the Pi – soldered joints are more reliable than using a connector."
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fustiniadmin over 13 years ago in reply to morgaine

You're right that Element 14's link to its own copy of the schematic listed under Design Elements->Schematic on its main Raspberry Pi page is broken --

http://www.element14.com/community/docs/DOC-42993/l/raspberry-pi-single-board-computer?ICID=rasp_group
Hi, are you still seeing a broken link? The schematic link takes me to:

http://www.element14.com/community/solutions/5952/l/raspberry-pi-schematic-for-raspberry-pi-model-b-board

where this PDF is available for download, Raspberry-Pi-Schematics-R1.0.pdf , which I'm able to download and view ok.

Thanks,
Drew
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morgaine over 13 years ago in reply to fustiniadmin

Yep, the chain of links works now, good job.
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