Click Sketch > Verify / Compile to make sure the code is properly in there. Save the file and then attach the Arduino to your computer with the USB cable. Click File > Upload.

The code is written in pure AVR C, and full instructions for compilation are provided. Storage comes from an SD card, as the ATmega’s meagre 32k is nowhere near enough.

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While this is no Monsieur, this DIY Arduino project may be the next best thing. The system uses a kitchen scale, a little amplifier, and an Arduino Uno (you can add in a Bluetooth chip if you want ...