Athom EM2 Energy Meter Energy Meter (EM2)
Available from:
Aliexpress.com
Manufacturer:
Athom.tech
Install method:
Tasmota pre-installed
| GPIO # | Component |
|---|---|
| GPIO00 | None |
| GPIO01 | None |
| GPIO02 | None |
| GPIO03 | None |
| GPIO04 | None |
| GPIO05 | None |
| GPIO06 | None |
| GPIO07 | Serial Tx |
| GPIO08 | ??? |
| GPIO09 | Button 1 |
| GPIO10 | LedLink |
| GPIO12 | None |
| GPIO13 | None |
| GPIO18 | User |
| GPIO19 | None |
| GPIO20 | None |
| GPIO21 | None |
Configuration for ESP32-C3
{"NAME":"Athom EM2","GPIO":[0,0,0,0,0,0,0,3200,11329,32,544,0,0,0,0,0,0,0,1,0,0,0],"FLAG":0,"BASE":1,"CMND":"EnergyCols 2 | SO129 1"}
This device comes with Tasmota already installed!
Note
Only supports single-phase electricity, not three-phase electricity, so only one voltage can be measured
Optional commands:
- EnergyCols
` - Change default 4 column GUI display to columns - VoltRes 1 - Change none to 1 decimal display
- FreqRes 1 - Change none to 1 decimal display
- WattRes 2 - Change none to 2 decimals display
- SetOption21 1 - Display Voltage
- SetOption129 1 - Display energy for each phase instead of single sum
- SetOption150 1 - Display no common voltage/frequency
- EnergyExportActive 1 - Enable display of Export Active energy based on negative Active Power