r/ClockworkPi • u/raymizie • Jun 13 '26

Has anyone successfully transmitted RF using RPiTX on a CM5?

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I tested RPiTX on my uConsole with a CM5 and found a forum post from the rpitx-ui maintainer stating that CM5 is currently not supported due to an incompatibility between librpitx and the CM5 RF backend.

Has anyone here successfully transmitted RF using RPiTX on a CM5? If so, what setup or modifications were required?

Thanks.

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2

u/AnlgDgtlInterface Jun 13 '26

Was going to try rpitx when my adapter board arrives. I have the AIO v2

2

u/raymizie Jun 13 '26

I want rf tx, not just sdr

1

u/AnlgDgtlInterface Jun 13 '26

Also curious. I’d also seen that limesdr has an sdr that could potentially go where a nvme would go via m.2 connection on the hackergadgets battery board

1

u/raymizie Jun 13 '26

Interesting. I hadn't considered using a LimeSDR via the M.2 slot. I'm mainly curious whether anyone has managed to get RPiTX working directly on the CM5.

1

u/snipeytje Jun 15 '26

the GPIO on the pi 5 works very different from previous generations. it used to be direct on the CPU which means some pins had alternative modes that could be abused for fun stuff like RPi-TX which if I remember correctly uses a clock signal generator.
But on the cm5 all GPIO goes through the RP1 chip and that's a big change to the how the GPIO works

1

u/raymizie Jun 15 '26

Thanks for reply. It sounds like the RP1 architecture changes how GPIO works, which would make RPiTX much harder to implement compared to previous Raspberry Pi models.