As I continued to reach the end of my knob (reached 100% - max duty cycle) I got 0W of power, almost 0 volts and 9A of current at the input. Weird right? High current but almost no power! Okay, now that we have 0W of power while the knob is turned all the way up, I starte...
// Serial buffer size: calculate based on max input size expected for one command #define INPUT_SIZE 30 void loop() { // Get next command from serial bluetooth (add 1 byte for final 0) char input[INPUT_SIZE + 1]; // array of type char (C-string) //read Serial until new line o...
10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true|false(逻辑层定义) 10.4 integerconstants(整数常量) 10.5 floating point constants(浮点常量) 十一、数据类型 11.1 void 11.2 boolean(布尔) 11.3 char(有号数据类型) 11.4 unsignedchar(无符号数据类型) 11.5 byte(无符号...
10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true | false(逻辑层定义) 10.4 integer constants(整数常量) 10.5 floating point constants(浮点常量) 十一、数据类型 11.1 void 11.2 boolean(布尔) 11.3 char(有号数据类型) 11.4 unsigned char(无符号数据类型) 11.5 byte(...
longran (min,max) 随机数函数,返回数据大于 等于min,小于max。 外部中断函数 attachInterrupt(interrupt, , mode) 外部中断只能 用到数字IO 口2 和3,interrupt 表示中断口初始0 或 1,表示一个功能函数,mode:LOW 低电平中断, CHANGE 有变化就中断,RISING 上升沿中断,FALLING 下降沿中断。 7 Arduino 手册(精要...
intCurrent=1; voidsetup() { lc.shutdown(0,false);//MAX72XX 在启动时处于省电模式,必须叫醒 lc.setIntensity(0,8);//将亮度设置为中等值 lc.clearDisplay(0);//并清除显示 randomSeed(analogRead(0)); pinMode(ButtonPin, INPUT); } voidshowNum(intx) { ...
int oldMax[20]; double maxInFreq; void loop() { // 采样 for (int i = 0; i < SAMPLES; i++) { unsigned long newTime = micros(); int value = analogRead(ANALOG_PIN); vReal[i] = value; vImag[i] = 0; while (micros() < (newTime + sampling_period_us)) { ...
Input voltage: 6-9V Maximum output current: 2A Maximum power dissipation: 25W (T=75℃) Motor speed: 5V 63 rpm Motor drive mode: DRV8833 motor driver Ultrasonic induction angle: <15 degrees Ultrasonic detection distance: 2cm-400cm Infrared remote control distance: 10M (measured) ...
intsensorMin=1023;// minimum sensor valueintsensorMax=0;// maximum sensor value 这些可能看起来反了。开始时,你设置最大的高电平,然后读取任何比它低的值,将它作为新的最小值保存。同样地,你设置最小的低电平,然后读取任何比它高的值,将它作为新的最大值保存。就像这样: ...
Adafruit USB Host FeatherWing with MAX3421E Product ID: 5858 Lots of microcontrollers these days have USB ports on them, to program or debug, act like a keyboard or disk drive, or simply send data between a computer and your firmware. But did you know that you can also add a USB Host...