I wish to set up sensor nodes and a Base System. The Base System receives the sensor data from the sensor nodes then connects to the Internet and feeds the data to a cloud service.
1) I assume Moteino will work well for sensor node. There are 5 sensors.
2) for Base System, I need > 2K SRAM. I just ordered a Wild Fire Base Station from wickeddevice.com - it uses the ATmega1284p. I assume for this I need just the RFM69W? (if that is so - is it easy to wire up to an Arduino?)
3) DOes it make sense for the nodes to have the RFM69HW (longer TX range) and the Base System to use the RFM69W (doesn't need the longer range since it will be receiving from the longer ranged nodes)?
Thank you very much.
RFM69 modules can only take up to 3.6V, no more.
RFM69HW is theoretically longer range because there's more power. So assuming that you're placing a HW in that extra range where a W could not reach, now you'll be OK if you only transmit, but not OK if you want ACKs - right? It's like playing ball with a kid, you can throw the ball 50ft, he can only do 30, so if you want the ball back, you'd better play with an adult or stay within the 30ft the kid can throw...