Thanks!
That certainly seems like it would cut down on rosin fumes but yikes-amighty, hitting near a BGA chip bearing surface with a hammer scares the bejezus out of me.
In our factory we are used to seeing field failures from board flexing with chips breaking internally or connections fracturing. Hopefully that is all tuned in and accounted for with this jig and the hammer induced stresses are small.
On the ESP32 castellated board, the contacts appear to be phosphor bronze wires bent in an exaggerated fishhook shape. The long arm passes thru a slot in the PCB that keeps it aligned in the axis it would be spread out in and the tip of the hook is soldered to a via in the board.
Perhaps it is time to build one of these:
https://www.youtube.com/watch?v=HPQbKTJPsU4https://howtomechatronics.com/projects/ ... g-machine/for some phosphor bronze fingers.
And wire is available:
https://www.etsy.com/market/phosphor_bronze_wire(Or just harvest all the little phosphor bronze fingers from the ESP_WROVER burn-in board and build with them:
https://www.aliexpress.com/item/1005002 ... d5b18663b4)
I have seen this kind of castellated connector design on demo boards for bluetooth modules also.
Or perhaps just 2 of these mounted as a V to each other and a small mechanism to press the Pico Pi into the V.
https://www.peconnectors.com/machined-p ... 0/hws9395/Thanks again, Bill
