
1. Introduction
The shaft encoder counting sensor uses a slot type through-beam photoelectric sensor, which is composed of an infrared LED and an NPN photoelectric triode, with a slot width of 5.9MM.As long as the opaque object passes through the slot, it can trigger the output TTL low level.Using a Schmidt trigger to debounce the pulse, it is very stable and can be used for applications such as measuring the speed and distance of small cars, etc.
2. Schematic
Slot Photoelectric Sensor-HS-S59P SchematicClick to view
Module Parameters
Pin Name | description |
|---|---|
G | GND (Negative Power Input) |
V | VCC (Positive Power Input) |
S | S Signal Pin |
Power Supply Voltage: 3.3V / 5V
Connection Method: PH2.0 Terminal Wire
Installation Method: Double Screw Fixed
4, Circuit Board Size

5 of Arduino IDE example program
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Arduino IDE Library Download and Import Tutorial:Click to view
Example program (UNO development board):
void setup(){
Serial.begin(9600);
pinMode(3, INPUT);
pinMode(10, OUTPUT);
}
void loop(){
if (digitalRead(3) == 0) {
Serial.println("ๆ็ฉไฝ็ป่ฟ๏ผ็นไบฎled");
digitalWrite(10,HIGH);
} else if (digitalRead(3) == 1) {
Serial.println("ๆชๆฃๆตๅฐ็ฉไฝ๏ผ็็ญled");
digitalWrite(10,LOW);
}
}6, ESP32 Python Example (for Mixly IDE/Misashi)
Choose the development board Python ESP32 [ESP32 Generic(4MB)] and upload in code mode
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial for Mixly IDE ESP32 library:Click to view
Example program (ESP32-Python):
import machine
import time
pin2 = machine.Pin(2, machine.Pin.IN)
pin4 = machine.Pin(4, machine.Pin.OUT)
while True:
if pin2.value() == 0:
pin4.value(1)
print('ๆ็ฉไฝ็ป่ฟ๏ผ็นไบฎLED')
time.sleep_ms(300)
else:
pin4.value(0)
print('ๆชๆฃๆตๅฐ็ฉไฝ็ป่ฟ๏ผ็็ญLED')7, Mixly example program (graphical language)
Example program (UNO development board):Click to download
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial of Mixly IDE Arduino library:Click to view

Example Program (ESP32 Development Board):Click to download
Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial for Mixly IDE ESP32 library:Click to view

8. Setting up the Test Environment
Arduino UNO Test Environment Setup
Prepare Components:
HELLO STEM UNO R3 DEVELOPMENT BOARD *1
HELLO STEM UNO EXP1 Expansion Board *1
USB TYPE-C DATA CABLE *1
Slot type photoelectric sensor (HS-S59P) *1
LED light module (HS-F08P) *1
PH2.0 3P dual-head terminal line *2
Circuit wiring diagram:

ESP32 Test Environment Setup
Prepare Components:Pending update...
Circuit wiring diagram:Pending update...
9, Video tutorial
Video tutorial:Click to view
10, Test results
Arduino UNO test results:
After the device is connected to the wire, burn the above program to the UNO-R3PRO development board and then connect the power supply.Open the serial port monitor. When the slot photoelectric sensor detects an object passing by, turn on the LED. If no object is detected, turn off the LED.


ESP32 Test Results:
Pending update...