ve2ngq
Posts: 4
Joined: Wed Jun 06, 2018 9:57 pm

Fan Power Source

Mon Aug 13, 2018 12:18 am

I Am new to Raspberry and I never used a forum before,
I bought a 3.3V/5V fan. for my B+ I am looking for a power source OTHER that the GPIO pins as I need them for my 40pin cable assembly to my breadboard.
Is there a secondary source?
Thanks in advance
Nat

hippy
Posts: 5959
Joined: Fri Sep 09, 2011 10:34 pm
Location: UK

Re: Fan Power Source

Mon Aug 13, 2018 1:27 pm

ve2ngq wrote:
Mon Aug 13, 2018 12:18 am
I am looking for a power source OTHER that the GPIO pins as I need them for my 40pin cable assembly to my breadboard.
You could run wires back from the power points on the breadboard for your fan, or use another mains PSU wallwart for supplying the fan's power, which might be the best recommendation anyway.

If you use pin headers on the wires supplying the power from breadboard or PSU you can unplug the fan from those and connect directly to GPIO when the breadboard is not being used.

Note that there's not usually no need to use a fan with a Pi anyway, so perhaps just don't use one, or not when using the breadboard.

mosespi
Posts: 508
Joined: Mon May 12, 2014 3:35 pm
Location: 34,-118
Contact: Website

Re: Fan Power Source

Tue Aug 14, 2018 12:02 am

You can also power it from the USB-A connectors. Bonus in that on some RPIs it's protected at 1.2A (total for all ports) and you may be able to turn it on and off from software.

Regards,
-Moses
Power problems? MoPower UPS for the Pi
http://www.allspectrum.com/mopower/

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