LED Blink

Solving Approach

How do you plan to solve it?

 
 I connect resistor 220 ohms to the ground, and wire a LED to GPIO pin 3. I code a program that sets the pin 3 for high 400ms, and low for 800ms in a loop. 

Code

https://wokwi.com/projects/442627219183872001

Output

Video

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Photo of Output

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