Now that RF transmissions work better, it was a small step to create a better house usage monitor. This one supports four sensors:
Only two sensors are being used so far (all sensor inputs are identical).
Sensor #1 watches the electricity meter rotations using the SY310 sensor:
Sensor #2 is a QRD1114 which tracks a little mirror mounted on the last digit “0” of the gas meter:
The sensors were described in a previous post. Proper positioning turned out to be crucial, so there’s a fair bit of scotch tape to hold everything in place!