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Current draw
Posted: Fri Apr 19, 2019 5:36 pm
by Kb5wne
Has anyone have a general idea what a pi 0 and hat draw? Trying to make a power cord to plug into my trucks 12 volt fuse block. Trying di figure what voltage regulator I need trying to keep it as small as I can hoping to be able to cover it with heat shrink tubing.
Re: Current draw
Posted: Fri Apr 19, 2019 6:55 pm
by KE0FHS
Bud, W0RMT, posted a good article comparing the RPi 3A+, 3B+, and Zero W:
Choosing a Pi for your Pi-Star hotspot
http://coloradodigital.net/03-11-2019.html
The article includes information about energy usage. It should help you get closer to the answer you need.
Re: Current draw
Posted: Sat Apr 20, 2019 4:03 am
by Kb5wne
Wow am I reading the specs correct? 180ma.
My pi-star CPU runs at 110 to 120 degrees when it was in a unvented c4 case 180ma at 5 volts how is it creating that much heat?
That's less than .9 watts. Or is my math fuzzy.