DC Voltage measurement with ESP8266, ADS1115, Tasmota and MQTT

Описание к видео DC Voltage measurement with ESP8266, ADS1115, Tasmota and MQTT

This project will be part of an off grid solar system. I'm measuring the battery voltage, PV voltage and current (through a current transformer) using a 4 channel ADS1115 16bit analog digital converter connected to an ESP8266 board. The ADC board measures voltages between 0 and 3.3V (in my case) so I'm using voltage dividers for measuring the 48V battery pack voltage and the ~ 80V PV panel voltage.
This short video shows the measured and converted values at 10 / 20 /30 /40 / 50 V DC. The measurements are sent as MQTT messages.
The upper power supply powers the ESP board (with a DC/DC converter), the lower PS simulates the battery voltage to be measured.

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