At the top left hand corner of the Pi is a 26 pin header labelled P1. It is here you can get access to logic signals that provide inputs and outputs to the computer.
However, using this involves using some sort of connector. In fact one option is my Buffer Board described here. However, many people might want to access the signals and not want to resort to soldering.
So I have designed this solder-less screw terminal access break out board. This connects to the Pi through a ribbon cable and transfers the signals to labelled screw terminals. There are three versions presented here. One that just transfers the data signals, and two that offer some form of protection for the processor’s GPIO lines.
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