Button Input for LED
As we know, the flashlight needs a switch to control the LED’s on and off. This circuit adds a button to the basic LED circuit and cooperates with the code to achieve this function.
What way it may look like if you build this circuit with an Arduino kit:
Try to build this circuit in Tinkercad Circuits:
Step 1: Find the Sample Code
The code for this project can be found: File > Examples > 02. Digital > Button
Look closely at comments to see how the code works.
Step 2: Connect one side of the button to the “+”
Use a jump wire between the “+” and one of the button’s legs
Step 3: Connect the second leg of the button to Pin 2
Step 4: Add 1K Ohm Resistor- NOT 220 Ohm
Connect the resistor to the second leg of the button. Other side connect to the “-” bus
Step 5: Build an independent loop with the LED
Connect the pin 13 to any unoccupied row, and the circuit could look like this :
Step 6: Test the Code
After we paste the code and start the simulation, when you press the button, both the onboard LED and the LED on the breadboard will light up!
| Introduction |
| Lesson One: System Design |
| Lesson Two: Basic Circuitry Knowledge |
| Lesson Three: Electronics Tools |
| Lesson Four: Lighting an LED |
| Lesson Five: Tilt Switch |
| Lesson Six: Photoresistor and LED |
| Lesson Seven: Button with Piezo Speaker |
| Lesson Eight: Dimming an LED |
| Lesson Nine: Button Input for LED |
| Lesson Ten: Ultrasonic Sensor Alarm |
| Further Resources |