RFM69HW not sending with high power set [SOLVED]

[noven]

I'm having unexpected results with acks when using high power. I have one moteino and one uno, both with RFM69HW radios. Using any code (including examples) the moteino works fine but the uno won't send if radio.setHighPower(); is set, although it does still receive. If I disable radio.setHighPower(); it works to send. It certainly *is* an RFM69HW and as it works without HP set I presume it isn't a wiring problem. Has anyone seen this effect before?

[Felix]

No it should really work. But I can't speak for UNO since I haven't used one in ages. Check your D2 interrupt wire, sounds like SPI is working but your interrupt might not be triggering. It's almost always a wiring or config issue. And of course using a RFM69 with a UNO means you need voltage dividers and 3.3V power to it, not the 5V UNO provides by default.

[noven]

Simple solution in the end. I'd powered from the Uno 3.3v output, which I just discovered only provides 50 mA - enough for 'normal' mode but not enough once switched to high power. Now I just need to find a voltage regulator to power from the 5v output and I expect it will work.