Getting started with electronics: LEDs and switches using Raspberry Pi — The MagPi magazine
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RPi GPIO Interface Circuits - eLinux.org
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How to Drive Many LEDs / High Powered LEDs with GPIO | A Beginners Guide - OKdo
How to use soft PWM in RPi.GPIO 0.5.2a pt 2 – led dimming and motor speed control – RasPi.TV
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Rasberry Pi | GPIO Examples 1 - A single LED | Gordons Projects
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Raspberry Pi Raspberry Pi Gpio Access | Raspberry Pi
![OpenWrt Wiki] GPIO](https://openwrt.org/_media/media/doc/hardware/gpio_high_low.png "OpenWrt Wiki] GPIO")
OpenWrt Wiki] GPIO
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Raspberry Pi: Python Scripting the GPIO : 8 Steps (with Pictures) - Instructables
Raspberry Pi GPIO Power Switch Not Working – Solved – MachinistBlog.com
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DIY Raspberry Pi GPIO LEDs and Switches board - Pieces of Pi
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Raspberry Pi Tutorial | Control LED With Push Button | Thetips4you
