Hi, I’ve got an ultrasonic sensor to monitor my salt bin. The setup all works well but my sensor is 10cm above the highest level the salt will be so I need to program that in. I thought this would work but doesn’t?
What am I doing wrong, please?
- platform: ultrasonic
trigger_pin: D7
echo_pin: D6
name: "Saltlevel in cm"
update_interval: 60min
filters:
# I multiplied by 100 in order to get CM since the sensor works in meters
- lambda: return (0.45-x)*(100+10);
unit_of_measurement: "cm"