Factory direct selling new optical sensor module Light detection optical resistance module optics module

use:

Light brightness detection, light brightness sensor, smart car light search module
Module characteristics:
1. Adopt a sensitive light -sensitive resistance sensor
2. The output of the comparator, the signal is clean, the waveform is good, and the driver capacity is strong, more than 15mA.
3. Match the adjustable detection light brightness
4. Work voltage 3.3V-5V
5. Output form: Do digital switch output (0 and 1) and AO analog voltage output
6. There are fixed bolt holes for easy installation
7. Small board PCB size: 3.2cm x 1.4cm
8. Use width voltage LM393 comparator

Module use instructions
1. The optical resistance module is the most sensitive to the environment of the environment. It is generally used to detect the brightness of the light of the surrounding environment, and trigger a single -chip microcomputer or relay module, etc.;
2. When the brightness of the module does not reach the set threshold, the DO end outputs high level. When the brightness of the external environment of the outside world exceeds the set threshold, the DO end outputs is low;
3. The DO output terminal can be directly connected to the single -chip microcomputer, and the high and low levels are detected by a single chip machine.
4. The DO output terminal can directly drive the relay module of the shop, which can form a optical control switch.

5. Small board simulation output AO can be connected to the AD module. Through AD conversion, you can get a more accurate value of environmental light;

Single -chip machine test program

/******************************************
Sensor trigger test
Single -chip machine: STC89C52
Potter rate: 9600
Product use: light detection.
********************************************************
#include
unsigned char date;
#Define uchar unsigned char
#Define UINT UNSIGNED INT
sbit key1 = p0^1;

/* Functional statement --------------------------------------------------------------------------------------------*/
void delay (uINT Z);
void initial_com (void);

// ********************************************************************

/*
**************************************************************************************
** Function name: delay (UINT Z)
** Function function: delay function
**************************************************************************************
*/
void delay (UINT Z)
{{
UINT I, J;
for(i=z;i>0; i-)
for(j=110;j>0; j--);
}

// **********************************

// ***** serial port initialization function *************

// **********************************
void initial_com (void)
{{
Ea = 1; // Open total interrupt
ES = 1; // Allow serial interrupt
ET1 = 1; // Allow the interruption of timer T1
TMOD = 0x20; // Timer T1, in the way 2 interruption, generate a baud rate
PCon = 0x00; // Smod = 0
SCON = 0x50; // Method 1 is controlled by timer
Th1 = 0xfd; // Potter rate set to 9600
Tl1 = 0xfd;
TR1 = 1; // Open timer T1 running control position

}

// ******************************
// ************ The main function **********
// ******************************
main (main ()
{{
Initial_com ();
While (1)
{{

If (key1 == 0)
{{
delay (); // Turlines
If (key1 == 0) // Confirm trigger
{{
Sbuf = 0x01;
delay (200);

}

}

if (RI)
{{
date = sbuf; // Single -chip machine accept
Sbuf = date; // Single -chip microcomputer send
Ri = 0;
}

}
}