Channel: Afrotechmods
Category: Science & Technology
Tags: voltslaser diodeelectronicscircuitelectronic engineering (field of study)tachometeroscilloscopedo it yourself (hobby)electricalledpropellorrobotlaser diode (invention)light-emitting diode (invention)laserlaser (invention)radio control (invention)electronics (field of study)laser tachometer
Description: Did you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices. Professional laser tachometer on Amazon: amazon.com/exec/obidos/ASIN/B000VC8RSE/afromods-20 Check out my webpage for more electronic projects! afrotechmods.com