Structure of an LED
The flow of charge carriers (electrons and holes) across the P-N junction drives the activity of an LED. When a forward voltage (anode positive in comparison to the cathode) is applied, electrons and holes recombine at the junction, releasing energy in the form of photons (light). The semiconductor chip is linked to external terminals known as the anode (+) and the cathode (-). The anode is linked to the P-region, and the cathode to the N-region.
LED Blinking Using Arduino
We will interface an LED (light-emitting diode) to the Arduino UNO board. An LED is a simple diode that emits light in a forward bias. We will write an LED-blinking program on the Arduino IDE and download it to the microcontroller board. The program simply turns ON and OFF LED with some delay between them.
Table of Content
- Blinking an LED
- Working procedure
- Components Required
- Arduino Code
- Deployment Using Arduino IDE
- Circuit Diagram
- Applications