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The final bits and pieces needed to bring my PCB creation skills a half-century closer to current practice should all arrive before week's end.
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Plan A to deal with these nearly microscopic contact points:
On a small piece of Pyralux (that brown stuff flat flex circuits are built on) layout five thru-hole pads that match the solder bumps in the serial port pad.
Bring the three signal lines (Tx, Rx, Gnd) out to humanly visible sized solder tabs.
Optionally, provide the three wires already soldered to this Pyralux adapter.
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Now the user (assuming soldering skills challenged users here) -
Aligns Pyralux adapter so the five solder points are centered in the five holes -
Optionally, fastens little bit of flex in-place with a drop of super-glue on the backside -
Then using solder paste with hot air OR hair-sized solder and tiny iron tip; connects the dots with the exposed flex copper in all five places.
Then a few drops of glue on the wires to the board to provide some strain relief -
the highly skilled soldering part of the job will be done.
The backing material of Pyralux is Kapton - it will provide some protection from doing any board damage during the very brief soldering experience. (I hope.)
It will still be possible to accidentally de-solder those two resistors - so the user will still need to be careful - but I expect this adapter will decrease the overall skill level required.
(Presuming I can make these tiny little adapter pieces.)
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