Step 1: What You Need?
1 x Arduino Board (Arduino UNO used in this tutorial)1 x 10k ohm resistor
1 x Button / Toggle Switch
1 x Breadboard
Male-to-Male Jumper Wires
Optional
1 x LED(RED)
1 x 220 Ohm Resistor
Don't have components? Don't worry. Just click the component's name.
Male-to-Male Jumper Wires
Optional
1 x LED(RED)
1 x 220 Ohm Resistor
Don't have components? Don't worry. Just click the component's name.
Step 2: Build Your Circuit.
Connect three wires to the board. The first two, red and black, connect to the two long vertical rows on the side of the breadboard to provide access to the 5 volt supply and ground. The third wire goes from digital pin 2 to one leg of the pushbutton. That same leg of the button connects through a pull-down resistor (here 10k ohm) to ground. The other leg of the button connects to the 5 volt supply of Arduino board.
Step 3: Upload The Code.
1. Select the Arduino board type: Select Tools >> Board >> Select your correct Arduino board used.
2. Find the port number by accessing device manager on Windows. See the section Port (COM&LPT) and look for an open port named "Arduino Uno (COMxx)". If you are using a different board, you will find a name accordingly. What matters is the xx in COMxx part. In my case, it's COM3. So my port number is 3.
Select the right port: Tools >> Port >> Select the port number.
3. You can find this code in the example of Arduino IDE.
Select File >> Examples >> 02.Digital >> Debounce
Select File >> Examples >> 02.Digital >> Debounce
Click press the "upload" button (see the button with right arrow mark).
The sketch is based on Limor Fried's version of debounce, but the logic is inverted from her example. In her example, the switch returns LOW when closed, and HIGH when open. Here, the switch returns HIGH when pressed and LOW when not pressed.
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