Youtube video
Things you need
Arduino UNO
LEDs
Breadboard
Breadboard Wires
Build on Breadboard
Coding
Hello
so at first we need to make some pins for output (remember for this project you need to use PWM pins, those who have a ‘~’ icon)
in void loop
we give a PWM signal from 0 to 255 to pins (9,10,11) in an order to make the LEDs look like fading
after that we also go from 255 to 0 to turn off the LED with a fading
then we basically do these again, but we give PWM to pins (11,10,9) in an order
I hope you understood that, I get it is a bit hard
What’s PWM?
Simply it just turns the pin on and off very fast, and we can change the duration of it being on or off
More info:
Pulse Width Modulation, or PWM, is a technique for getting analog results with digital means. Digital control is used to create a square wave, a signal switched between on and off. This on-off pattern can simulate voltages in between the full Vcc of the board (e.g., 5 V on Uno, 3.3 V on a MKR board) and off (0 Volts) by changing the portion of the time the signal spends on versus the time that the signal spends off. The duration of “on time” is called the pulse width. To get varying analog values, you change, or modulate, that pulse width. If you repeat this on-off pattern fast enough with an LED for example, the result is as if the signal is a steady voltage between 0 and Vcc controlling the brightness of the LED.