Has anyone used a 3 in 1 sensor DWS-MH-01 sensor with esphome? This water sensor measures TDS, temperature and water flow. The flow sensor is a pulse counter but I can not find any information about the TDS and the temperature sensor.
Here is linked to the sensor at Aliexpress
I found the following GitHub project for this sensor with STM32
Any help will be appreciated
I have not used this sensor (and likely never will), but for the water flow and temperature it should be pretty straightforward. 50k NTC can be read with Esp ADC using 50k resistor to make voltage divider. Hall sensor with pulse counter. But be careful with operating voltage, if sensor doesn’t work with 3.3V supply (specs require >3.5V), you need to use 5V and use level shifter on esp input.
TDS is undocumented, but schematic of your link uses Gravity TDS-meter V1, so that could be good start point.