Hi,
I have a laser range senor that has Power, GND and a 4-20 mA output and I bought the 2-Channel 4-20 mA Current Loop Receiver 16-Bit ADS1115 I2C Mini Module (SKU PR33-8).
I did as above where I connect 4-20 mA output from the sensor to IN1 and GND to V COM. The laser sensor is powered by 24 VDC.
I have a multi-meter in series and current reading is fine but i get no data when reading the i2c bus.
I have used the example code from https://github.com/ncdcommunity/Raspberry_Pi_ADS1115_16Bit_4Channel_ADC_Python_Library,
I have tried both single ended and differential and all four channels.
What could be wrong?
Edit:
After a time I disconnected everything and started over again.
4-20mA from sensor connected to V_COM on board (soldered)
GND Connected to IN1 and GND sensor
24 VDC connected to power sensor
this way works BUT it turns the 2 channel into a 1 channel receiver. I have two sensors to read…
What would be the best way to solve it by 1 receiver?