@mfalkvidd He's asking how to connect a nrf24 to an ATtiny167 and, if needed, what to tell MySensors to make it work. @Oskar-Dünnebeil Compare the pinouts, here's the ATtiny. Then connect it 1:1 if possible. I know of the options MY_CE_PIN and MY_CS_PIN, maybe there are more. Check the guides for that.