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In reply to: http://www.youtube.com/watch?v=J9cEAGTLaC8

Jesus Christ, I know I am a n00b when it comes to electronics, but why did it take me the whole day of reading tutorials and watching YouTube videos about the Raspberry Pi to find out what I was doing wrong? This video is the first one which mentions that it is important that the cathode of a LED has to be connected to the ground, not the other way around.

11 Replies


Classic. I'm actually doing alot with my RPi and leds + joystick. Trying to create an emulator-station out of it in haskell.


Oh it's no problem with NES & Snes. The beauty of the project is to have an dedicated EMU-box made from RPi and a real joystick as input. The buttons are illuminated so you can play in the dark :D


the point of a diode is to let a current flow through the circuit in only one direction. this is what happens for example to alternating current https://dlnmh9ip6v2uc.cloudfront.net/assets/2/9/2/f/3/5176f4bfce395f3a61000000.png LED = light emitting diode

Behrouz Talebi

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