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
PCB Size: 31mm x 14mm
Mounting Hole Size: 3mm
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: This module does not work, the module do not have