project: oil tank level sensor
make a heating oil tank level sensor that’s more useful than anything you can buy measures oil level in any unit – litres, gallons or days until I need to refill the tank displays...
Tagged: distance sensor
distance sensor or sonar ranger
These distance or motion sensors use sound reflected from an object to detect changes in its position. Most designs were based on the sensor developed as the range finder for Polaroid’s cameras. You can...
