DFR0535 Solar Power Manager I2C monitoring
yacobucci 2025-02-08 01:19:17 2361 Views4 Replies Does anyone know (or have successfully tried) monitoring the dfr0535 through I2C? I didn't see it explicitly mentioned, but am hoping I missed something. It would be great to see battery levels without physically looking at the device.
Thanks in advance!
- MY
None of DFRobot's Solar Power Managers provide information on battery level by i2c to a microcontroller … and I have never understood why DFRobot think we are happy for a battery to just die without warning.
There are plenty of modules (including DFRobot's I2C Digital Wattmeter SEN0291) which measure voltage and/or current and communicate via i2c. I personally added an INA3221 to monitor battery and solar panel with my DFRobot SPM 5V.
If you prefer electronics, you can easily make a voltage divider and connect that to an Analog Input on your microcontroller.
don.burch I also need answers or input on this to resolve it quickly
Edit by among us a day ago
margaret.jmiller Thank you.
Would this need to be something on the battery in terminal? [Bat] → [Monitor] → [3.7V DFR0535 IN] or can it be added to an output terminal?
I was hoping there would pins on the DFR0535 I could plug into with an arduino or raspberry pi.
yacobucci While remote battery level checking is possible, consider using a compatible microcontroller or additional sensors that can communicate with the DFR0535 and provide the necessary data via I2C.
margaret.jmiller 
