Waveshare Laser Receiver Module Laser Sensor Module Transmitter Module for Arduino AVR PIC

very responsive without false triggering, best used over slight distance

Works well. If your power comes from *some* switching power supplies - clean it up with filtering or soft-start. It doesn't like a glitchy supply with transients upon power up. Or use batteries or a linear supply. Several switching supplies seem to work though. Just verify. By using this with a mirror or retroreflector, it can be used as a break-beam sensor, over quite a long distance, with decent noise immunity. The caveat is that the output will be LOW when beam is not broken, because it is receiving the reflected beam continuously, and it goes HIGH when the beam broken more than about 30 cm from the detector. I got it to work over a distance of 6 to 7 meters (~18ft). For beam interruptions at a few cm or less from the detector, it still thinks the beam is uninterrupted since its seeing reflections from the interrupting object (that's just its normal operating mode as an object detector)

Non credevo esistesse un laser che riconosce il colore nero

It must be sold with the right reflector

Item arrived on time and works as expected!

cumple