Hi, I've got an original Drayton RF3 and a Pi with a 433Mhz wired into GPIO - pin 11. This already works and switches on some Maplins socktets.

I was hoping to re-use it with your code to switch the boiler on/off. I've made the following change to drayton.c and run make drayton:

#define PIN RPI_GPIO_P1_11

Which I believe configures the code to use the correct pin. But when I run sudo ./drayton on (or off), the little light on the controller unit doesn't flash and the boiler doesn't change state. Suggesting nothing is being received. The manual suggests the little red light should flash when a signal is being received.

Do you have any ideas what I could try?

I have a perfectly working Honeywell relay (BDR91) which I would like to use rather than reinventing the wheel. I wondered if you could tell me/us all a little about how you found the protocol your relay uses/expects to receive.

Thank you.

Al.