- 30_pin_simm_pack.JPG (285.8 KiB) Viewed 8780 times
First up I got a new "pasting jig" made. The engineer is likely no longer talking to me, but I got the design I wanted in the end and fantastic it is! Expensive, but I needed a way to speed up production as aligning the film by hand and taping the stencil on while pasting.. well.. basically took forever.
- IMG_1722.JPG (434.27 KiB) Viewed 8780 times
- IMG_1724.JPG (464.1 KiB) Viewed 8780 times
- IMG_1726.JPG (692.91 KiB) Viewed 8780 times
- IMG_1727.JPG (676.35 KiB) Viewed 8780 times
- IMG_1728.JPG (383.68 KiB) Viewed 8780 times
- IMG_1729.JPG (305.15 KiB) Viewed 8780 times
- IMG_1730.JPG (506.06 KiB) Viewed 8780 times
- IMG_1731.JPG (468.81 KiB) Viewed 8780 times
And Finally...- IMG_20170602_140446.jpg (108.67 KiB) Viewed 8780 times
Simms are now on sale in my store.
Packs of 4. https://www.exxosforum.co.uk/atari/store2/#0024
EDIT:
Simms now have one side with solder on the connection pads. Originally I had a thicker PCB, but it was a pain to fit. So I went for a thinner PCB only to find there was bad connections and a larger PCB would be better
Turns out, that a lot of simms have a fair amount of solder on the pads and actually bend the sockets pins "out of spec". So when a "in-spec" simm board (the ones I make!) Tended not to make good contact in sockets which have had these "bad" simms in place. So it became a problem to have a thicker pcb and not have a thicker pcb at the same time! So I went with to solder up the pads to make the pads "thicker" but keep the PCB thinner. As this solder is "random thickness" from pin to pin, it bends the simm socket pins more than others, which means a proper spec simm doesn't make good contact (but it does in a brand new socket!) . So in order to combat "bad simms" basically damaging the simm sockets, I soldered up my simms so the PCB physically fits in the holder, and is forced into shape by the extra solder on my simms, and thus makes good contact then!
