8位 七段顯示器模組 八位 串列控制 595晶片 驅動

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產品編號： LCR-002042

8位 七段顯示器模組 八位 串列控制 595晶片 驅動

採用2片595驅動數碼管，需要單片機3路IO口，根據數碼管動態掃描原理進行顯示；
寬工作電壓3.3V到5V；
PCB板尺寸：71mm*22mm
數碼管型號：0.36 4位共陽


8 digital LED Display Module eight serial module 595 drives

Use two 595-driven digital control, 3-way needed microcontroller IO port, according to the digital display dynamic scanning principle
Wide Operating Voltage: 3.3V to 5V
Digital Tube Model: 0.36 4 common anode
PCB Plate Size: 71X22X10mm/2.79*0.86*0.39"

Arduino 範例一
/*
Modify from Liquid Crystal example
For 8 x 7 segment module
*/

#define LATCH 12 //pin 12 of BBFuino connect to RCK of 8x7segment module
#define CLOCK 11 //pin 11 of BBFuino connect to SCK of 8x7segment module
#define DATA 10 //pin 10 of BBFuino connect to DIO of 8x7segment module
#define LED 13 //LED is connected to pin 13 of Arduino
#define MultiplexDelay 1 //delay for multiplexing between digit on 8x7segment module
#define LEFT 0 // define the value for left justify
#define RIGHT 1 // define the value for right justify
#define BLANK 11 //array element to make 7segment blank


// array to activate particular digit on the 8x7segment module
// it is the common anode of 7 segment
byte anode[8] = { 0b10000000, //digit 1 from right
0b01000000, //digit 2 from right
0b00100000, //digit 3 from right
0b00010000, //digit 4 from right
0b00001000, //digit 5 from right
0b00000100, //digit 6 from right
0b00000010, //digit 7 from right
0b00000001 //digit 8 from right
};

//array for decimal number, it is the cathode, please refer to the datasheet.
//therefore a logic low will activete the particular segment
//PGFEDCBA, segment on 7 segment, P is the dot
byte cathode[12] = {0b11000000, // 0
0b11111001, // 1
0b10100100, // 2
0b10110000, // 3
0b10011001, // 4
0b10010010, // 5
0b10000010, // 6
0b11111000, // 7
0b10000000, // 8
0b10010000, // 9
0b01111111, //dot
0b11111111 //blank
};

//fucntion to send the serial data out to two 74HC595 serial to parallel shift register and activate the 7 segment.
void display8x7segment(byte datapin, byte clockpin, byte latchpin, byte digit, byte number)
{
digitalWrite(latchpin, LOW);
shiftOut(datapin, clockpin, MSBFIRST, digit); // clears the right display
shiftOut(datapin, clockpin, MSBFIRST, number); // clears the left

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