My Gakken SX-150

This is my Gakken SX-150 coming directly from Japan. The SX-150 is a analog synthesizer with LFO, pitch envelope, frequency cutoff, resonance and attack/decay. The pitch is controlled by a wired pen and a resistor-strip. It has a build-in speaker and a mono 3,5mm mono-jack. The SX-150 comes as a kit and a Japanese manual. The kit is very easy to assembly. You just need a screwdriver and some patience. It also takes a little training with the slide-controller to find the correct notes which I show you in this short clip:

Arduino Punk Console

Huh! ...being quite busy last month. Now I'm back in "Bastel-Business" with a 8-step tone sequencer called Arduino Punk Console (APC). It's based on a project from Beavis Audio Research and includes a Arduino-Board with an Atmel328 .
On the upper-left is the volume-knob and the 3 knobs in a row are for Duration, Frequency and Tempo of the tone-sequence. The frequency of each step can be set separatly. Just hold one of the step-buttons and adjust the frequency-knob at the same time.
The display(16 digits x 2 lines) from Sparkfun has a serial interface which is very easy to use.

Currently the only problem is, that I have to hold the start/stop-button permanently to hear the sequence. I will fix this in the software soon. There is also a small bug in the wiring-diagram on the homepage : The red-line to the "tempo" potentiometer is missing.

I also left some space for more potentiometers on the right side. A feature-merge of the Auduino would be cool.

Update: I uploaded a video showing the APC in live-action!