[alasdairc]

Hi guys.

Some good news!

I have these devices working perfectly on my pi using archtech_switch_old and both the release and nightly packages.

So the problem is definitely in the firmware for the nano.

Like I said a while ago: you can see by the capture that the nano isn't transmitting any long high pulses. That must be where the problem is to be solved.

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I had a good look through the nano firmware, and it all seemed pretty sane to me.
I'll see if I can debug what's happening there.