10K ohm 电阻 连接线 面包板 电路 连接3根线到开发板。最开始两根,红和黑,连接到面包板上的两个长垂直行来提供5V电源电压和地。第三根线从数字引脚pin2连接到按钮的一个引脚。按钮的同一个引脚连接下拉电阻(10k ohm)到地。按钮的另一个引脚连接到5V电源。 按钮或者开关连接电路的两点。按钮是断开的(未
* pushbutton attached from pin 2 to +5V * 10K resistor attached from pin 2 to ground * Note: On most Arduino boards, there is already an LED on the board connected to pin 13, so you don't need any extra components for this example. created 21 November 2006 by David A. Mellis modi...
即时按钮或者开关 10k ohm 电阻 连接线 面包板 电路 连接3根线到开发板。最开始两根,红和黑,连接到面包板上的两个长垂直行来提供5V电源电压和地。第三根线从数字引脚pin2连接到按钮的一个引脚。按钮的同一个引脚连接下拉电阻(10k ohm)到地。按钮的另一个引脚连接到5V电源。 按钮或者开关连接电路的两点。按钮是...
这个例子示范了怎样使一个输入防抖,这意味着在一个短时间内检查两次来确保这个按键是确实被按下了。如果没有防抖,按一次这个按键可能会引起不可预测的结果。这个程序利用millis()函数来保持按下的时间间隔。 硬件要求 Arduino or Genuino 开发板 即时按键或者开关 10k ohm 电阻 连接线 面包板 电路 原理图 样例...
/*ButtonTurns on and off a light emitting diode(LED) connected to digital pin 13,when pressing a pushbutton attached to pin 2.The circuit:- LED attached from pin 13 to ground through 220 ohm resistor- pushbutton attached to pin 2 from +5V- 10K resistor attached to pin 2 from ground-...
Now that your setup has been completed, move into the main loop of your code. When your button is pressed, 5 volts will freely flow through yourcircuit, and when it is not pressed, the input pin will be connected to ground through the 10k ohm resistor. This is a digital input, meaning...
-我们在寄生模式下使用温度传感器。这意味着VCC和接地均被拉至GND。数据线通过4.7 kOhm电阻连接到电源。数据线也连接到数字引脚13。 有关如何连接DS18B20的更多信息。 -LCD的连接方式很经典。引脚顺序为RS 7,启用8,D4至D7进入9至12)。 RVV和RSS接地,VCC到5V。 LED的电源使用10kResistor(LCD上的引脚15)。亮度...
10KOhm Resistor (Qty 3) 100KOhm Resistor 1KOhm Resistor 2.2KOhm Resistor (maybe) 10nF Capacitor 100nF Capacitor NPN Transistor (PN2222 or equivalent) 3.5mm 4-pole jack (SparkFun BOB-11570 – $4) TNC cable for your radio (~$10; Mobilinkd) ...
* Ethernet shield attached to pins 10, 11, 12, 13 * Connect an LED to pin D2 and put it in series with a 220 ohm resistor to ground Based almost entirely upon Web Server by Tom Igoe and David Mellis Edit history: created 18 Dec 2009 by David A. Mellis modified 4 Sep 2010 by To...
- LED attached from pin 13 to ground through 220 ohm resistor - pushbutton attached to pin 2 from +5V - 10K resistor attached to pin 2 from ground - Note: on most Arduinos there is already an LED on the board attached to pin 13. ...