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Tried it, not a fan. I use the 10 pin ARM JTAG pinout on all my boards with a 0.050" 2x5 ribbon header. Works great, very small.

Love that connector, I’d like to see something roughly the same physical size that can do SWD/JTAG, SPI, UART, and I2C.

Even splitting that across two connectors would be good, maybe SWD+UART AND SPI+I2C

Oddly, TagConnect with the locking holes is slightly bigger than 4 standard .100 pins.

TagConnect is really only useful when you want to only program the board, and not do anything like debugging.

Thanks for sharing this. Would love to see a more compacy version of this but either way, it doesn't seem like a really elegant solution.

Pogo figures are never "elegant" by any means.