The use of imported groove coupler sensor.
2.The slot width 5mm.
3.The output status indicator lamp output high, output low lights.
4.Block, output high; no shelter, output low.
5.The comparator output signal clean, good waveform, driving ability, than 15mA.
6.The working voltage of 3.3V-5V.
7.The output format: digital switching output (0 and 1).
8.A fixed bolt holes for easy installation.
9.Small plates PCB size: 3.2cm x 1.4cm.
10.Uusing a wide voltage comparator LM393.
t can measure RPM over 20k; Sensor range extends upto 7~8 cm; Displays Maximum … Arduino; Resistors – 33k , 270 ohm , 10k potentiometer; LED – blue; IR LED and ….. to be working, however at a speed measurement of around 1000 rpm the readings
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