Arduino控制LED灯条显示电池电量

在大多数产品中并没有电池电量显示的功能,当我们长时间没有充电想要充电的时候又不知道电量是否还可以支持工作,这样就可能导致浪费资源和时间.

我们今天就使用Arduino和LED灯条模块模拟显示电池的电量显示。

我们需要的材料清单如下:

Arduino uno R3 板子 *1

USB 数据线     *1

灯条模块     *1

10K电阻      *2

杜邦线若干 

首先硬件电路的连接如下：

实验所用的代码如下：

（需要代码详细解读可观看下面链接的视频教程）

/***********************************************************File name: _32_LEDBarModule.inoDescription: This example will show you how to use the setBits()function of this library.Set any combination ofLEDs using 10 bits.The setBits() function sets the current state,one bit for each LED.First 10 bits from the rightcontrol the 10 LEDs.eg. 0b00000jihgfedcbaa = LED 1, b = LED 2, c = LED 3, etc.dec hex binary0 = 0x0 = 0b000000000000000 = all LEDs off5 = 0x05 = 0b000000000000101 = LEDs 1 and 3 on, all others off341 = 0x155 = 0b000000101010101 = LEDs 1,3,5,7,9 on, 2,4,6,8,10 off1023 = 0x3ff = 0b000001111111111 = all LEDs on| |10 1.Website: www.gewbot.comDate: 2017/03/17***********************************************************/#include
#define PIN7 7#define PIN8 8Adeept_Bar bar(PIN7, PIN8); // Clock pin7, Data pin8double a;void setup(){bar.begin(); // initialize}void loop(){// Turn on LED 1bar.setBits(0b000000000000001);// 0b000000000000001 can also be written as 0x1:delay(500);// Turn on LED 12bar.setBits(0b000000000000011);// 0b000000000000011 can also be written as 0x3:delay(500);// Turn on LED 123bar.setBits(0b000000000000111);// 0b000000000000111 can also be written as 0x7:delay(500);// Turn on LED 1234bar.setBits(0b000000000001111);// 0b000000000001111 can also be written as 0xf:delay(500);// Turn on LED 12345bar.setBits(0b000000000011111);// 0b000000000011111 can also be written as 0x1f:delay(500);// Turn on LED 123456bar.setBits(0b000000000111111);// 0b000000000111111 can also be written as 0x3f:delay(500);// Turn on LED 1234567bar.setBits(0b000000001111111);// 0b000000001111111 can also be written as 0x7f:delay(500);// Turn on LED 12345678bar.setBits(0b000000011111111);// 0b000000011111111 can also be written as 0xff:delay(500);// Turn on LED 123456789bar.setBits(0b000000111111111);// 0b000000111111111 can also be written as 0x1ff:delay(500);// Turn on all LEDsbar.setBits(0x3ff);delay(500);// Turn on LED 123456789bar.setBits(0b000000111111111);// 0b000000111111111 can also be written as 0x1ff:delay(500);// Turn on LED 12345678bar.setBits(0b000000011111111);// 0b000000011111111 can also be written as 0xff:delay(500);// Turn on LED 1234567bar.setBits(0b000000001111111);// 0b000000001111111 can also be written as 0x7f:delay(500);// Turn on LED 123456bar.setBits(0b000000000111111);// 0b000000000111111 can also be written as 0x3f:delay(500);// Turn on LED 12345bar.setBits(0b000000000011111);// 0b000000000011111 can also be written as 0x1f:delay(500);// Turn on LED 1234bar.setBits(0b000000000001111);// 0b000000000001111 can also be written as 0xf:delay(500);// Turn on LED 123bar.setBits(0b000000000000111);// 0b000000000000111 can also be written as 0x7:delay(500);// Turn on LED 12bar.setBits(0b000000000000011);// 0b000000000000011 can also be written as 0x3:delay(500);// Turn on LED 1bar.setBits(0b000000000000001);// 0b000000000000001 can also be written as 0x1:delay(500);a=(double)(analogRead(A0)-20)/100;//将A0输入信号转换为0-1023之间的数值
//判断a点获取的电压值是否在这个区间if(a>3.0&&a<3.5){bar.setBits(0b000000000000001);// 0b000000000000001 can also be written as 0x1:}
else if(a>3.5&&a<4){bar.setBits(0b000000000000111);// 0b000000000000001 can also be written as 0x1:}else if(a>4&&a<4.5){bar.setBits(0b000000000011111);// 0b000000000000001 can also be written as 0x1:}else if(a>4.5&&a<5){bar.setBits(0b000000000111111);// 0b000000000000001 can also be written as 0x1:}else{bar.setBits(0b000000111111111);}}

将上面代码烧入Arduino板子后我们将得到以下的结果

更多的创意等待着你挖掘哦 

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