Built inside a jar, this synthesizer has a square-wave oscillator as well as sweeping LFO modulation effect. The pitch and speed are controlled by outside light sources hitting the two light sensors inside so there is a lot of room for experimenting.
All of the components are built in a three dimensional floating circuit that comes down from the lid of the jar.
A yellow LED pulsates in time. There is a single switch on top for power which is supplied by an included 9v battery, and a 1/4" output jack that makes it easy to connect to amps, effects, or recording equipment.
This was hand-built in a series of six.
This is a ten key square-wave synthesizer with LFO (low frequency oscillator) modulation. There is a frequency control that sets the range of pitches laid out on the buttons, so it does not play specific traditional notes. It is monophonic and will sound the highest pitch being played.
The LFO modulator can be turned on or off with a second switch and has controls for the amount of modulation and speed of the LFO. A second red LED light flashes in time.
There is also a volume control and power on/off switch. A standard 1/4" jack makes it easy to connect to amps, effects, recording equipment, etc. Power is supplied by the included wall adapter.
The old wood box it is built into has slightly warped or was made a bit crooked, but is solid. Inside is a trace of it's previous life. It measures roughly 5x4 inches.
Hope this finds a good home.
Two square-wave oscillators built into a NES advantage controller with turbo.
This is a square-wave generator with a pulsing effect, hand built into an Atari paddle controller. When you press the trigger it plays the pitch controlled by the large original knob. When you flip the switch a LFO will start to pulse on and off. The speed of the pulse is controlled by the additional smaller knob and at high speeds you can get some interesting throaty sounds.
A red LED lights with the sound. It can easily be connect to amps, effects, recording equipment, etc. At the end of the original cord is a 1/4" plug and running from there is a wall adapter for power.
This classic feels great in your hands and residue in the old knob (that once caused annoying skips during your game) now gives you nice little distortions.