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Arduino Mega 2560 and sd card module

I bought a sd card module some time ago, from a Chinese seller on Ebay. These modules are really cheap, I paid 2,03€ for it and that includes shipping to Belgium. You really wonder how they can do it. To try it out I connected the sd card module to my Arduino Uno and uploaded […]

Arduino Uno test

I wanted to do a quick check if all the digital pins on my Arduino Uno were still working.  The Arduino Uno has 14 digital pins, these can all be set as input or output. So I needed a sketch with 14 times the same statement to declare the pins as output and to write […]