Arduino Square wave synth

Youtube description - Just playing with Arduino and crappy sound synthesis :)

First Arduino Project: Simple Square Wave Synth

Youtube description - This is my first attempt at putting together an Arduino project. I've had the thing about 20 minutes. :) (Well, by now a few hours, since it took me a while to document the project, but you get the idea.) This was made by putting together the ideas from a few of the Arduino example projects. This video is just a quick demo. For project documentation, feel free to go here:

http://www.ramp-music.net/?p=255

arduino synth

Youtube description - 3 photoresistors
2 sine wavetable oscillators
arduino duemilanove/atmega 368p

Cool DIY Arduino synth

Youtube description - This is the fantastic Auduino by Peter Knight! Here I've built it into an ipod nano box using the Arduino Pro Mini!

DIY Synth: Auduino

Youtube description - This is a video of my Auduino prototype. 

All audio, except for the echo, is coming from the Arduino/Auduino.

I have plans to build a ribbon controller that would control the pitch instead of the leftmost potentiometer. Of course a prettier enclosure would be nice too, the prototype was built into a carboard box.

Have a look at my build blog here:
http://jessestudio.blogspot.com/2009/...

Scematics and source code can be found here:
http://code.google.com/p/tinkerit/wik...
http://groups.google.com/group/auduino

I ordered the pots and Moog style knobs from ebay.
Build cost was around 40€ including the Arduino itself.

Arduino Synth with LED-Control

Youtube description - Arduino Synth Code by Tinkerit, modded for having blue Status Leds for each of the 5 Controls. The Sound Quality is poor, captured with my CompactCamera. I will do a mp3 Line-In capture perhaps.

Auduino - The Arduino synthesiser

Youtube description - Auduino is a software synthesiser that runs on the Arduino. What you hear comes directly out of the Arduino - no external synthesiser required.
Details and code at http://code.google.com/p/tinkerit/

Optical theremin with LFO

This was made with two 555 chips. One for the audio output oscillator and the other one modulating the first.

Red light oscillator

I built this years ago. I'm trying to remember exactly what it was. I'm pretty sure that it was a standard 555 oscillator being modulated by a blinking light circuit that was taken out of a bike light.

Modified light for optical theremin

Here is a modified light for use with this optical theremin.

4 Step Sequencer DIY synth

This is a very fun and attractive 4 step sequencer. The stain is a warm dark red color that goes amazing with the blue LEDs. Each step has a fine and coarse tune knob to control the pitch. The speed or BPM of the sequencer is controlled by the knob at the top left. You have the option to toggle between 4 steps (notes), 3 steps, or 2 step patterns. Each step has the option of being turned off also. The 4 LEDs at the bottom indicate the place in sequence that is currently being played. The whole thing runs off a 9v battery and has a 1/4 inch output jack that can be plugged into a guitar amp or anything that will accept a 1/4 jack.
Keep in mind this is a build intended to appeal to circuit benders and synth people alike. This may not act like your usual store bought sequencer. That is the great part about it. There are sounds you can create with this that no other product is capable of. Currently for sale at http://thebetatesters.org/sequencer.html