Hi,
Thanks for the work, and it's great to be able to easily order from JLCPCB. We still need to figure out how to program the ATTINY. Earlier, we mentioned the Adafruit High Voltage UPDI Friend, but I see it only has one UPDI pin, so do we just connect GND, PWR to VTG, and UPDI to UPDI?
Is there a place in the transponder code to change the number?

Thanks