If I directly connect an LED with GPIO pins without a resistor, will that brick my Raspberry Pi 3 B? - Quora
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Control LED Using GPIO Output Pin - Raspberry Pi Spy
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Raspberry Pi Max current with GPIO for LED – Hackfi
RPi.GPIO basics 6 – Using inputs and outputs together with RPi.GPIO – pull-ups and pull-downs – RasPi.TV
Everything You Want to Know About Raspberry Pi GPIO: But Were Afraid to Ask • Circuits
rpio - What is the minimum current value into the Pi's GPIO input? - Raspberry Pi Stack Exchange
How to use interrupts with Python on the Raspberry Pi and RPi.GPIO – part 3 – RasPi.TV
Raspberry Pi Documentation - Raspberry Pi hardware
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What inputs can I use with my Raspberry Pi? Part 1 - Switches and logic-level sensors
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Dr. Monk's DIY Electronics Blog: GPIO LED blink from Python using Slice of Pi
