Gray Scale Sensor HS-S22P

1. Introduction

The grayscale sensor is an analog sensor that can be used with Arduino to perceive different colors on the ground or desktop and produce corresponding signals. It can realize interactive works related to colors, and can also be used as a tracking car sensor or a football robot's field grayscale recognition sensor.The grayscale sensor includes a white high-brightness LED and a photosensitive resistor. Due to the different light returned by the LED when照射 to paper with different grayscale, the photosensitive resistor receives the returned light, and the resistance value of the photosensitive resistor is also different according to the intensity of the light, thereby realizing the grayscale value test.

2. Schematic

Gray sensor-HS-S22P schematicClick to view

Module Parameters

• 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):

 int value = 0;

void setup(){
  Serial.begin(9600);

  pinMode(A0, INPUT);
}

void loop(){
  value = analogRead(A0);
  Serial.print("灰度值：");
  Serial.println(value);
  delay(500);

}

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


adc32 = machine.ADC(machine.Pin(32))
while True:
    print('灰度值：',end ="")
    print(adc32.read_u16())
    time.sleep_ms(100)

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 R3P expansion board *1

• USB TYPE-C DATA CABLE *1

• Grayscale Sensor (HS-S22P) *1

• PH2.0 3P dual-head terminal line *1 or PH2.0 3P terminal to DuPont wire *1

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 connecting the device lines, upload the above program to the Arduino UNO development board, open the Mxily serial port monitor, place the sensor on paper with different gray levels, and we observe that the serial port prints out different measured analog value numbers.

ESP32 Test Results:

Pending update...