[Andrew] got a little help from his friends to hack a laser distance meter. Using laser distance ... The only option seemed to be using the Arduino to simulate button presses on the 390B’s ...

Inside [Klaus]’ device is an Arduino ... to 1 m in 5cm increments. This isn’t the limit of the sensor, though, and the device can be easily reconfigured to sense a distance up to four meters.

Said to precisely measure the distance to an object at ranges of up to 50m, the L-GAGE LT3 Time-of-Flight Sensor is a self-contained, Class 2 laser distance ... resolution of 1 mm, depending ...