How to run two of the emonTx V3 on the same emonpi board

[glyn.hudson]

@alienpepsiman

You said that further chooses will need a firmware edit

If the emonTx is running latest firmware (V2.6+) the RF node ID can be changed via serial config feature. No, firmware editing required.

emonTx / emonTH configure RF settings via serial (released FW: V2.6 / V3.2)

emonTx V3 firmware now allows the RF settings (nodeID, freq, group) to be configured via serial. Settings are saved to EEPROM and persistent between power cycles. Update: these changes have now been released FW V:2.6+ Enter ‘+++’ then [Enter] during the POST (Power-On Self-Test) 10s delay during startup to enter config: Note: Ensure serial monitor is set to NL/CR and the Baud Rate set to 115200*. Arduino IDE serial monitor may need to be restarted after changing the line ending selection. *…

If your emonTx is running older firmware, you can update to V2.6 using emonUpload:

Update firmware using emonUpload tool

I have been working on a python based command line tool to grab the latest firmware for all our hardware units (emonTx V3, emonTH, emonTH V2, emonPi) via GitHub releases API and make it easy for the user to burn an Arduino bootloader via ISP (if needed) then upload the latest firmware via serial USB to UART. The tool is called emonUpload. We use it internally in the factory and in our office to upload firmware to all our units before shipping. emonUpload also supports viewing serial debug outpu…