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Frequency Filtering with the Audio Hacker Shield

The Audio Hacker shield for Arduino lets you do some cool things with digital signal processing. This new project shows how a fairly simple Arduino sketch can implement a low-pass filter, high-pass filter and band-pass filter. A low-pass filter allows low frequencies...

Using a Video Experimenter as MIDI Controller

This simple project shows how a video signal captured by a Video Experimenter Shield can be used to send MIDI messages to a synthesizer. A small camera module is connected to the input of the Video Experimenter (the red wire in the picture is for powering the camera...

Digit Shield Used in Concrete 3D Printer

Wow, this is the craziest 3D printing I’ve ever seen. The material is concrete! Andrey has been working very hard for years to developed a 3D printer than can literally print houses. Here is the castle he printed. For more information about this, check out...

Arduino Backpack Board for RGB Matrix Panel

A while back, I did a project using a 32×16 RGB LED matrix panel from Adafruit but found that connecting an Arduino to the panel was a real wiring mess. So I decided to design a small Arduino “backpack” board that snaps right onto the back of the...

Tabasco Bottle LED Mood Lamp

I love Tabasco and always though that their cute little miniature bottles could be the basis for a great specialty lamp. I was very happy to find that a 3mm LED fits perfectly in the bottle opening of the miniature bottles. By designing a custom circuit board I was...