一、TM1637简介
TM1637 是一种带键盘扫描接口的LED(发光二极管显示器)驱动控制专用电路,内部集成有MCU 数字接口、数据锁存器、LED 高压驱动、键盘扫描等电路。
显示模式(8 段×6 位),支持共阳数码管输出
键扫描(8×2bit),增强型抗干扰按键识别电路
辉度调节电路(占空比 8 级可调)
两线串行接口(CLK,DIO)
振荡方式:内置RC 振荡(450KHz+5%)
内置上电复位电路
内置自动消隐电路
二、引脚定义
CLK时钟输入,DIO数据输入输出,V电源5V正极,G电源负极
三、Arduino UNO与数码管模块接线
Arduino UNO | TM1637 |
---|---|
A4 | DIO |
A5 | CLK |
5V | VCC |
GND | GND |
四、测试代码
在Arduino IDE库管理器搜索TM1637,并安装如图示所例程库
打开ExtClock.ino例程文章来源:https://www.toymoban.com/news/detail-523572.html
/*
Clock example example (Extended class example)
Display a clock on the display. For this demo you can add a speed multiplier to make the clock run faster. For a real clock you want to use a delay of 1 min or even use a Real Time Clock module (RTC)
The circuit:
* connect TM1637 pin CLK to Arduino pin D4
* connect TM1637 pin DIO to Arduino pin D5
* connect TM1637 pin Vcc to Arduino pin 5V
* connect TM1637 pin GND to Arduino pin GND
Created 25 September 2015
By Bram Harmsen
https://github.com/bremme/arduino-tm1637
*/
// include the SevenSegmentTM1637 library
#include "SevenSegmentTM1637.h"
#include "SevenSegmentExtended.h"
/* initialize global TM1637 Display object
* The constructor takes two arguments, the number of the clock pin and the digital output pin:
* SevenSegmentTM1637(byte pinCLK, byte pinDIO);
*/
const byte PIN_CLK = 4; // define CLK pin (any digital pin)
const byte PIN_DIO = 5; // define DIO pin (any digital pin)
SevenSegmentExtended display(PIN_CLK, PIN_DIO);
const unsigned int clockSpeed = 10000; // speed up clock for demo
// run setup code
void setup() {
Serial.begin(9600); // initializes the Serial connection @ 9600 baud
display.begin(); // initializes the display
display.setBacklight(100); // set the brightness to 100 %
delay(1000); // wait 1000 ms
};
// run loop (forever)
void loop() {
byte hours = 14; // initialize hours
byte minutes = 39; // initialize minutes
for ( ; hours < 24; hours++) { // count hours up to 24
for ( ; minutes < 60; minutes++) { // count minutes up to 59
display.printTime(hours, minutes, true); // display time
delay(60000 / clockSpeed); // clock delay ms
};
minutes = 0; // reset minutes
};
};
五、实验结果
编译上传代码到Arduino UNO后数码管显示出时钟走时
文章来源地址https://www.toymoban.com/news/detail-523572.html
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