Targets with highly reflective surfaces can bounce enough light back to the sensor to effectively pass unseen in front of it. The reflective properties of plastic make it a notorious offender in this ...

These light barriers create a closed light beam between the sensor and machine part. A separate reflector is unnecessary, reducing operating costs and increasing process safety. SmartReflect light ...

Once you have a track and a kart to race on it, what’s missing? A lap counter that can give your lap times in hardcopy, obviously! That’s what led [the_anykey] to create the Arduino-based Lap Timer to ...