Tuya CB2S pogo pin jig
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I needed something to make connections to the pads while I tried to flash a KMC Smart Tap Mini with OpenBK. It uses a…
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Share Alike
I needed something to make connections to the pads while I tried to flash a KMC Smart Tap Mini with OpenBK. It uses a Tuya CB2S module that's edge-mounted through the main circuit board. This jig can be held/clamped against the bit that protrudes through the main board. It makes a fairly firm fit around the tab to align the pins, it can take a bit of jiggling to get aligned correctly. Patience.
I used these pogo pins: https://www.amazon.com/gp/product/B007Q8JILQ and a liberal blob of superglue to keep them in place.
While I was never successful flashing OpenBK, I verified that the pins in the jig were making solid connections to the right places: the 3.3v and ground pins are able to run the device and I can trace the RX and TX to the button and LED to which they're connected. I suspect that the latter is what was interfering with ltchiptool. It turns out that these devices are still vulnerable to the exploit used by tuya-cloudcutter so I didn't resort to desoldering the chip oretc....
The CadQuery script to create the part is probably naive, but it works....
Print Settings
Printer Brand:
Prusa
Printer:
MINI+
Doesn't Matter
Supports:
Doesn't Matter
0.20mm Quality
Infill:
15%
Category: Electronics