ericcooper
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how to connect to pins that are already used by a HAT?

Thu May 17, 2018 4:09 pm

I have a Pi Zero W with a HAT that covers all the GPIO pins with its header. I'd like to attach yet another device to some of those pins. All I can think of is to solder to the stubs of the header pins on the back of the Pi. Is there a better method?


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mahjongg
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Re: how to connect to pins that are already used by a HAT?

Thu May 17, 2018 4:37 pm

Or Alex Eames Full_phat

Image

Or a dozen other solutions.

Like a band cable with multiple female isolation displacement connectors.

ericcooper
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Joined: Sat Apr 08, 2017 6:23 pm

Re: how to connect to pins that are already used by a HAT?

Thu May 17, 2018 7:15 pm

Thanks for these suggestions. This is for a small battery-powered system, so the smallest shim solution is the most attractive for my application.

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bensimmo
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Re: how to connect to pins that are already used by a HAT?

Thu May 17, 2018 7:31 pm

Or, depending on the hat, if not soldered or not soldered yet, then use a longer pin riser.
E.g. https://www.adafruit.com/product/2223


Or solder, as you say to the pins (or rear side pins).

What hat is it ?

ericcooper
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Joined: Sat Apr 08, 2017 6:23 pm

Re: how to connect to pins that are already used by a HAT?

Thu May 17, 2018 8:57 pm

bensimmo wrote: What hat is it ?
It's a pHAT of my own design (actually designed by a real EE; I did the software and overall architecture) that has two radios (915MHz and 2.4GHz), LiPo power management and charging, plus some assorted goodies like ADC, RTC, and accelerometer.

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