【Arduino】控制LED灯条模拟电池电量显示

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。
材料清单:
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:
Arduino代码:

/***********************************************************
 File name: _32_LEDBarModule.ino
 Description: This example will show you how to use the setBits()
 function of this library.Set any combination of
 LEDs using 10 bits.
 The setBits() function sets the current state,
 one bit for each LED.First 10 bits from the right
 control the 10 LEDs.
 eg. 0b00000jihgfedcba
 a = LED 1, b = LED 2, c = LED 3, etc.
 dec hex binary
 0 = 0x0 = 0b000000000000000 = all LEDs off
 5 = 0x05 = 0b000000000000101 = LEDs 1 and 3 on, all others off
 341 = 0x155 = 0b000000101010101 = LEDs 1,3,5,7,9 on, 2,4,6,8,10 off
 1023 = 0x3ff = 0b000001111111111 = all LEDs on
 | |
 10 1.
 Website: www.gewbot.com
 Date: 2017/03/17
 ***********************************************************/
 #include

#define PIN7 7
#define PIN8 8
Adeept_Bar bar(PIN7, PIN8); // Clock pin7, Data pin8
double a;
void setup()
{
bar.begin(); // initialize
}
void loop()
{

// Turn on LED 1
bar.setBits(0b000000000000001);// 0b000000000000001 can also be written as 0x1:
delay(500);
// Turn on LED 12
bar.setBits(0b000000000000011);// 0b000000000000011 can also be written as 0x3:
delay(500);
// Turn on LED 123
bar.setBits(0b000000000000111);// 0b000000000000111 can also be written as 0x7:
delay(500);
// Turn on LED 1234
bar.setBits(0b000000000001111);// 0b000000000001111 can also be written as 0xf:
delay(500);
// Turn on LED 12345
bar.setBits(0b000000000011111);// 0b000000000011111 can also be written as 0x1f:
delay(500);
// Turn on LED 123456
bar.setBits(0b000000000111111);// 0b000000000111111 can also be written as 0x3f:
delay(500);
// Turn on LED 1234567
bar.setBits(0b000000001111111);// 0b000000001111111 can also be written as 0x7f:
delay(500);
// Turn on LED 12345678
bar.setBits(0b000000011111111);// 0b000000011111111 can also be written as 0xff:
delay(500);
// Turn on LED 123456789
bar.setBits(0b000000111111111);// 0b000000111111111 can also be written as 0x1ff:
delay(500);
// Turn on all LEDs
bar.setBits(0x3ff);
delay(500);
// Turn on LED 123456789
bar.setBits(0b000000111111111);// 0b000000111111111 can also be written as 0x1ff:
delay(500);
// Turn on LED 12345678
bar.setBits(0b000000011111111);// 0b000000011111111 can also be written as 0xff:
delay(500);
// Turn on LED 1234567
bar.setBits(0b000000001111111);// 0b000000001111111 can also be written as 0x7f:
delay(500);
// Turn on LED 123456
bar.setBits(0b000000000111111);// 0b000000000111111 can also be written as 0x3f:
delay(500);
// Turn on LED 12345
bar.setBits(0b000000000011111);// 0b000000000011111 can also be written as 0x1f:
delay(500);
// Turn on LED 1234
bar.setBits(0b000000000001111);// 0b000000000001111 can also be written as 0xf:
delay(500);
// Turn on LED 123
bar.setBits(0b000000000000111);// 0b000000000000111 can also be written as 0x7:
delay(500);
// Turn on LED 12
bar.setBits(0b000000000000011);// 0b000000000000011 can also be written as 0x3:
delay(500);
// Turn on LED 1
bar.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&&a3.5&&a4&&a4.5&&a<5)
{
bar.setBits(0b000000000111111);// 0b000000000000001 can also be written as 0x1:
}
else
{
bar.setBits(0b000000111111111);
}

}

跳至工具栏