This speed sensor has an optical sensor that allows you
to measure revolution per minute (RPM). It requires an encoder disc to
count the number of times the sensor goes low to high or vice versa, we
can calculate the revolution in a given period of time. It has an analog
and digital output.
It is commonly used in robotics, speed sensing, printers, and motor
drivers.
Feature:
Main Chip: LM393
Working Voltage: 3.3V to 5V
Output Form: digital switch output (0 and 1)
Output: Covered, output high level; Without sunscreen, the output low level
Slotted Width: 5mm
Specification:
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
DO
modules can be connected to the relay, limit switch, and other
functions, it can also with the active buzzer module, compose alarm
Interface:
VCC: Connect the positive 3.3v-5v
power supply
GND: Connect power negative
DO: TTL switch signal output
AO: Invalid