ขาย Speed Sensor Counter Module chip LM393 Slot-type Optocoupler Tacho-generator for Arduino NodeMCU Wemos By KPRAppCompile ราคาที่ดีที่สุด

Speed Sensor ModuleCounter Module Main chip:LM393,Correlation type infrared headMain chip:LM393,Correlation type infrared head Working voltage:DC 5V Narrow body Use: Widely used in motor speed detection, pulse counting, position limit, etc. Module features: 1. Use imported slot type optocoupler sensor with slot width 5mm. 2. There is an output status indicator, the output high level light is off, and the output low level light is on. 3, there is occlusion, output high level; no occlusion, output low level. 4, the comparator output, the signal is clean, the waveform is good, the driving ability is strong, more than 15mA. 5, working voltage 3.3V-5V 6, output form: digital switch output (0 and 1) 7, with fixed bolt holes for easy installation 8, small board PCB size: 3.2cm x 1.4cm 9, using a wide voltage LM393 comparator Module instructions: 1. When there is no occlusion in the module slot, the receiving tube is turned on, and the module DO outputs a low level. When occluding, the DO outputs a high level; 2. The DO output interface can be directly connected to the IO port of the single-chip microcomputer to detect whether the sensor has a occlusion. For example, the motor code wheel can detect the rotation speed of the motor. 2. The module DO can be connected to the relay to form a limit switch and other functions. It can also be connected to the active buzzer module to form an alarm. Product wiring instructions: 1, VCC is connected to the positive pole of the power supply 3.3-5V 2, GND connected to the negative power supply 3, DO TTL switch signal output 4, AO This module does not work