Chipi - Button
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Phiên bản vào lúc 15:54, ngày 13 tháng 6 năm 2014 của BS135 (Thảo luận | đóng góp) (Tạo trang mới với nội dung “Category:Chipi Series {{Đang viết}} == Giới thiệu == [http://www.chipfc.com/chipi_button ChipI - Button] trên trang chủ [[Image:Button.jpg…”)
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Giới thiệu
ChipI - Button trên trang chủ
ChipI Button Top.jpgChipI Button Bot.jpg
Grove - Button is a momentary push button. It normally outputs LOW. We have two versions of Grove - Button on sale as the pictures above. The only difference between them is the direction of the Grove socket.
Sử dụng
Below is a simple example showing how to use a button to turn on/off an LED.
//Turns 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
* 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.
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/Button
*/
// constants won't change. They're used here to
// set pin numbers:
const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}
void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
}
else {
// turn LED off:
digitalWrite(ledPin, LOW);
}
} |
