I bought the “2-Channel Off-Board 98% Accuracy AC Current Monitor with IoT Interface” (100 Amp; SKU: PR38-16_100A) so I could monitor my whole home energy usage.
I have a Raspberry Pi 3 that I want to use do some python development and monitor energy usage running Raspbian Stretch.
To get the RPi3 and AC Monitor to work together, I bought the “I2C Shield for Raspberry Pi 3 & Pi2 with Outward Facing I2C Port Terminates over HDMI Port” (SKU: PR2-3) and the “I2C to IoT Interface Adapter” (SKU: PR37-3).
I got the I2C Shield working on the Pi with another I2C device (OLED screen), so I know that works, but I when I plug the I2C to IoT into the AC Monitor (not sure if it correct) and connect that to the I2C interface on the Pi. i2cdetect -y 1 does not show any devices, when it worked with the OLED screen.
Anything, that I could be doing wrong? Wrong adapters? Wrong insertion of the IoT to I2C?
Thanks for your help.