Note: if you find inaccuracies or have more info, please report using git Issues
Supported Efergy Energy Monitors
- Efergy E2 Classic (need exact model number?)
- Efergy Elite TPM (Reciever is RX-ELITE 3.0 (TPM-NA), sensor is ELITE-TPM-NA 1.0)
- Maybe others?
Instructions:
1) Get a working usb rtl-sdr device with the rtl_fm binary (probably from rtl-sdr library).
2) Check #defines in EfergyRPI_log.c to match your specific Efergy sensor/transmitter type
In particular, check this one:
#define VOLTAGE
- With the default settings the program tries to decode up to 9 bytes of
message data and checks for both 1 byte checksum and the 2 byte CRC.
3) Compile using: gcc -O3 -o EfergyRPI_log EfergyRPI_log.c -lm
4) Run program and review program help
./EfergyRPI_log -help
5) Find optimal frequency and gain values by analyzing rtl_fm output in debug mode
rtl_fm -f 433.55e6 -s 200000 -r 96000 -A fast | ./EfergyRPI_log -d
- Adjust frequency (-f) by .1 plus or minus until debug output
shows wave center close to 0 and solid decode.
- Gain (-g) may or may not be needed. Some folks had best results
by adding -g 19.7 to rtl_fm
6) Run in normal mode to output parsed energy usage info
rtl_fm -f 433.55e6 -s 200000 -r 96000 -A fast 2>/dev/null | ./EfergyRPI_log
7) Run in log mode to send parsed energy usage info to log file
rtl_fm -f 433.55e6 -s 200000 -r 96000 -A fast 2>/dev/null | ./EfergyRPI_log logfile