piACC-Mini-Min-V8

Submitted by abitowhit on Thu, 01/03/2019 - 18:09

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V8 Update

This is not a software update but a hardware update on the button version of the piACC.

I have replaced the pi Zero WH (with headers) with a non-header version and soldered the diodes directly to the GPIO pins.
This makes for a much smaller footprint as well as reduces the price from $14 US to $5 US for the pi Zero.
I soldered a 220k ohm resistor to the LED hot leg prior to soldering to the circuit board. I also wrapped each leg with heat shrink to protect the leads.
I will include an opening in the top which will allow the light from the LED to shine through.

This leaves only the ribbon cable for the membrane touch pad as the only thing loose to pack into the case and looks much cleaner.
It is a substantial savings on the unit itself by not having the GPIO header.