HS-S20A Environmental Brightness Sensor

1. Introduction

2. Schematic

Environmental brightness sensor-HS-S20B schematicClick to view

Module Parameters

• Power Supply Voltage: 3.3V / 5V

• Connection Type: 2.54mm Header

• 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):

volatile int sensorValue;
volatile int light;

void setup(){
  sensorValue = 0;
  light = 0;
  Serial.begin(9600);
  pinMode(A0, INPUT);
  pinMode(9, OUTPUT);
}

void loop(){
  //环境亮度传感器接A0；led灯模块接D9；
  //当手遮住光敏传感器时，显示数值将变小，led灯变亮；当光线变强时，显示数值将变大，led灯变暗；

  sensorValue = analogRead(A0);
  light = (map(sensorValue, 40, 890, 255, 0));
  Serial.print("  A0=");
  Serial.print(sensorValue);
  Serial.print("  light=");
  Serial.println(light);
  delay(5);
  analogWrite(9, light);

}

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
from mixpy import math_map


value = 0
light = 0
adc32 = machine.ADC(machine.Pin(32))
pwm2 = machine.PWM(machine.Pin(2))
while True:
    value = adc32.read_u16()
    light = (math_map(value, 0, 65535, 65535, 0))
    pwm2.duty_u16(int(light))

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 PRO DEVELOPMENT BOARD *1

• USB TYPE-C DATA CABLE *1

• LED light module (HS-F08A) *1

• Environmental Brightness Sensor Module (HS-S20A) *1

• 1P female to female Dupont wire *6 pieces or 3P female to female Dupont wire *2 pieces

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: