Web interface to control multiple Sofar ME3000 battery chargers
Project based on the code from mister cmcgerty : https://github.com/cmcgerty/Sofar2mqtt
Integrated multi-registers read by code from : https://github.com/irekzielinski
Thanks a lot to them for their support!
The electronic circuit to be realized is exactly the same as the one described by mister cmcgerty on his GitHub.
Version 1.0 (Jan-2024)
- Multi-Sofar chargers handling
- Shelly 3M Pro Energy Meter integration, used in automated mode to adjust the power
- Reads all Sofar registers in one go making read cycle very quick (thx to Irek for sharing his solution!)
- Asynchronous Web interface to display live data and control the chargers
- Automatic / Manual mode control switch from the Web interface
- Multiple chargers power commands will be set equaliy to each charger (ex: if 3000W is set to charge and 2 chargers are connected then each will charge at 1500W)
- Adjust power (Charge/Discharge) by slider and Standby on the Web interface in Manual mode
- Retains last enabled mode in esp eprom
- Live ESP logs accessible from the Web interface
- JSON data accessible via CURL:
http://xxx.xxx.xxx.xxx/data.json - CURL to set mode, standby/charge/discharge commands:
http://xxx.xxx.xxx.xxx/update?cmd=setmode&val=x (x=0 for Mode Manu, x=1 for Mode Auto)
http://xxx.xxx.xxx.xxx/update?cmd=setpower&val=x (x=0 to set Standby, x>0 to charge to xW, x<0 to discharge to xW) - Comparison of x numbers of EM Shelly measurements (to be defined in the parameters) before placing an automatic adjustment command when the measured power is below a threshold (also to be defined in the parameters)
This because with low power the Shelly Energy Meter is not the most precise.
If the difference between the x numbers of concecutive power measurements is below a threshold (also to be defined) then the system adjusts.
With a power measurement greater than the defined threshold, the system adjusts from the first measurement. - NOT YET implemented : initial settings from SD-CARD and adjusting parameter settings from the Web interface
- NOT YET implemented : MQTT Server (maybe using TinyMqtt) to host data and set charge/discharge/standby commands.
Any help is welcome to continue the development !
