Thanks @bpr - See my post - it doesn’t work for me but perhaps it is due to the fact that I’m using “H” high power modules? I’ve created and published RFM69-Particle that works with “H” (and others). Examples included that work, and you can use the stock “Hello World” example on Arduino and the library example on Photon to communicate between Promini and RFM69 on Photon if anyone is interested.
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