Using Swift to control the Raspberry Pi GPIO pins and turn an LED on | by Claudio Carnino | A Swift misadventure | Medium
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Department of Computer Science and Technology – Raspberry Pi: Section 2: GPIO
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Raspberry Pi GPIO Pinout: What Each Pin Does on Pi 4, Earlier Models | Tom's Hardware
RPi.GPIO basics 5 – Setting up and using outputs with RPi.GPIO – RasPi.TV
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Raspberry Pi Starter Kit Lesson 2: Introduction of Raspberry Pi GPIO « osoyoo.com
Everything You Want to Know About Raspberry Pi GPIO: But Were Afraid to Ask • Circuits
