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Pulse-Width Modulation (PWM) is a technique used for controlling the power given to electrical devices. The average power supplied is controlled by rapidly turning the supply on and off. Questions here concern driving PWM outputs from the Raspberry Pi.
3
votes
Lighting a LED slowly with GPIO
To achieve slow dimming or brightening of your LED you will require (as others have posted before) PWM.
Introduction to PWM
There are primarily two types of modulation software and hardware. … Solution to your query (without having to buy or install anything)
The finer your application the more advanced the PWM you need to use, for your purpose (LEDs) the precision required is not too great …
3
votes
1
answer
16k
views
How to use pigpio to control a servo motor with a keyboard?
I'm using an RPi 2, a tower Pro Micro servo SG90 and have connected it to the PWM enabled pin 13 (BCM denotation). My servo has not been modified for continuous rotation. …