HS-S20L-B Environmental Light Sensor

1. Introduction

2. Schematic

Module Parameters

• Power Supply Voltage: 3.3V / 5V

• Connection Method: PH2.0 3P Terminal Wire

• Installation method: double screw fixed/LEGO construction

4, Circuit Board Size

5 of Arduino IDE example program

Arduino UNO Graphical Example Program:

volatile int sensorValue;
volatile int light;

void setup(){
  sensorValue = 0;
  light = 0;
  Serial.begin(9600);
  pinMode(A0, INPUT);
  pinMode(6, OUTPUT);
}

void loop(){
  //环境亮度传感器接A0；led灯模块接D6；
  //当手遮住光敏传感器时，显示数值将变大，led灯变亮；当光线变强时，显示数值将变小，led灯变暗；

  sensorValue = analogRead(A0);
  light = (map(sensorValue, 0, 1023, 0, 255));
  Serial.print("  A0=");
  Serial.print(sensorValue);
  Serial.print("  light=");
  Serial.println(light);
  delay(5);
  analogWrite(6, light);

}

ESP32 Python Example (for Mixly IDE / Micskit)
(Choose the Python ESP32 [ESP32 Generic(4MB)] to switch to code mode upload):

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))

6, Miciqi Mixly Example Program (Graphical Language)

Arduino UNO Graphical Example Program:Click to download

ESP32 Python Graphical Example Program:Click to download

7, Test Environment Setup

Arduino UNO Test Environment Setup

Prepare Components:

• HELLO STEM UNO R3 DEVELOPMENT BOARD *1

• HELLO STEM UNO R3 P EXPANSION BOARD *1

• USB TYPE-C DATA CABLE *1

• LED module (HS-F08L) *1

• Environmental brightness sensor module (HS-S20L-B) *1

• PH2.0 3P dual-head terminal line *2

Circuit wiring diagram:

ESP32 Python test environment setup

8. Video tutorial

Arduino UNOVideo tutorial:Click to view

ESP32 Python Video Tutorial:

9. Test conclusion

Arduino UNO Test Conclusion:

ESP32 Python test conclusion: