Step 4Adding the sockets (and power feed)
PCB pins are soldered in place one hole to the inside of the Arduino connectors. I guess if you have a different prototyping board then you'll have to work out a different spacing arrangement. The pins poke up from underneath, almost the reverse of how they are normally fitted.
The sockets are then soldered to the row of pins at the height needed to poke clearly through the prototyping board.
The power for the prototyping board is supplied by two sets of wires soldered to the +5V and GND pins of the extension PCBs ready for plugging into the prototyping board in the next stage.
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