I have a wireless thermostat for my central heating system that I’d like to replace with an arduino+tranceiver.
The manual for the existing device says it uses 868MHz for data transmission: http://www.honeywelluk.com/products/Systems/Wireless-Enabled/Sundial-RF2-Pack-2/
I opened up the device and was pleased to see at Atmega329V and quickly identified the other chip - a Texus Instruments C1100 tranceiver. (see attached image)
It looks like the C1100 has been superseded by the C1101, but from what I’ve read they seem to be compatible.
My question is: how do I go about capturing the transmissions (for later analysis/replay)? Presumably this is simplified by having the same hardware, rather than some completely unknown protocol on the same freqency. I’ve used the NRF24L01 modules before and know they have different channels / addresses / packet size and structure - how do I approach this task?