HopeRF RFM69CW - wireless transceiver
The RFM69CW is a pin-compatiable replacement for the RFM12B. The module is manufactured by HopeRF with SEMTEC silicon.
With the updated RF12 driver from JeeLabs the RFM69CW can be backwards compatible with the RFM12B
Credit to LowPowerLab.com for comparison table:
Another RFM12B comparison from http://www.mikrocontroller.net/articles/RFM69
The native frequency of the RFM69CW can be identified by the addition of an RF network capacitor on the 433Mhz unit.
Software:
JeeLabs RF12 JeeLib RF12 Arduino Library Driver: https://github.com/jcw/jeelib
JeeLabs Forum RF12 RFM69CW discussion topic: http://jeelabs.net/boards/6/topics/4050
To make existing sketches work with RFM69CW , update to latest JeeLib and add #define RF69_COMPAT 1 before #include <JeeLib.h> . See JeeLib example . (RF69_COMPAT 0 if using RFM12B)
Links:
Hope RF Product Page: http://www.hoperf.com/rf/fsk_module/RFM69CW.htm
RFM69CW Datasheet: http://www.hoperf.com/upload/rf/RFM69CW-V1.1.pdf
Issues
The RFM69CW requires a 10K-100K pull-up resistor on the SEL to de-select it from the SPI bus to allow ISP uploading: https://openenergymonitor.org/emon/node/5345