Im going to be working on a project where I will need 2 nodes and one base station. To communicate with each other. I am going to be using an Atmel AVR for the processing on the base station. I have thought about playing with the Atmel raven stuff(for development) and then building my own circuit for the project. Just need to transmit data from the nodes to the base station when some inputs go off. Range is an issue about 100m needed(note this is a maximum Minimum that might be needed is only 2 or 3m). Due to the unknown length each time these will be used I don't want to wire them in. I would like low power with the possibility of the nodes being run of a coin cell.

• Is this a good way to go?
• Are there any alternatives to the Atmel Raven technology(Do microchip have an alternative)?
• Should I consider bluetooth or anything else for the wireless communications?