Speed Sensor 4 Pin Photoelectric Infrared Enconder Sensor Arduino PIC
+ Widely used in motor speed detection, pulse count, the position limit, etc.
+ Using imported groove optical coupling sensor, width 5mm.
+ It have the output state light, if output high level, the lights are off. if output low level ,it on.
+ If it covered,it will output high level;otherwise it output low level.
+ Good signal and waveform, with strong driving ability for more than 15mA.
+ The working voltage of 3.3V to 5V.
+ Output: digital switch output (0 and 1).
+ Equipped with a fixed bolt hole, easily install.
+ Use the LM393 wide voltage comparer.
+ The DO output interface can be directly connected to a micro-controller IO port, if there is a block detection sensor, such as the speed of the motor encoder can detect.
+ VCC Connect the positive 3.3 5 v power supply
+ GND Connect power negative
+ DO TTL switch signal output
+ AO This module does not work