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I would like to monitor the DC voltages of my solar system and broadcast those via MQTT.
For now I have no current monitoring planned with this IC.
But I am more than happy about your suggestions on how to monitor 200A@60V and 20@120V
The battery bank voltage can go up to 65V
The solar panels to 150V
The INA3221 module can do maximum 26V
65V 1kOhm/670Ohm=26.078V (Voltage Divider)
The ratio is 2.492522432701894?
So 1V would be 0.4012V?
150V 1kOhm/210ohms=26.033V
The ratio is 5.76191756616602
So 1V would be 0.1735533333333333V
Do these resistor values make sense? What resistors to use, 1% 0.1%... I am not sure what even excists and need to verify.
I was planning on doing this via ESP8266 or ESP32 and tasmota I2C broadcasting over MQTT.
For now I have no current monitoring planned with this IC.
But I am more than happy about your suggestions on how to monitor 200A@60V and 20@120V
The battery bank voltage can go up to 65V
The solar panels to 150V
The INA3221 module can do maximum 26V
65V 1kOhm/670Ohm=26.078V (Voltage Divider)
The ratio is 2.492522432701894?
So 1V would be 0.4012V?
150V 1kOhm/210ohms=26.033V
The ratio is 5.76191756616602
So 1V would be 0.1735533333333333V
Do these resistor values make sense? What resistors to use, 1% 0.1%... I am not sure what even excists and need to verify.
I was planning on doing this via ESP8266 or ESP32 and tasmota I2C broadcasting over MQTT.
