Atari Punk Console, Industrial V2

Industrial Version 2

Atari Punk Console circuit housed in what was a pump controller.  I recycled the switches and the cast aluminum BUD enclosure. 

Square wave based table top synth/drone machine.
 Dual oscillators, frequency control of both
 LFO with rate control, selectable to run as CV for either oscillator circuit (on/off/on switch)
 Filter circuit built in
 LFO on the filter circuit (on/off switch)
 1/4" audio output jack, LED on output signal
 2.1mm power Jack, runs on 9 VDC power supply (on/off switch)

Video shows this unit inaction.  Signal is running to Reason Record where I am using a Combi. based filter.  Background rhythm is not based/sampled from this APC.

Audio is completely based on the signal from this unit; treated again in Reason : )

Atari Punk Console, Industrial V2 by gebrochene augen

Moog

It's Robert Moog's 78th Birthday today.

Check this out:

MOOG

Google has a really cool Moog synthesizer that one could play.  Wish Google would have kept it up longer.

Atari Punk Console, Industrial Controller V1

Here is the latest creation, straight from the basement laboratory.

Circuit is based on the famous APC (Atari Punk Console), but with some modifications and my own additions.  Unique recycled enclosure was once used to house a metering pump controller.  Now it is transformed into a unique and one of a kind table top synthesizer.

Single square wave oscillator complete with frequency and rate control's, high and low frequency settings, starve control, output signal cutoff frequency and gain control.  Square wave based LFO with frequency control and selector switch to control two different parts of the main oscillator circuit.

Rocker switches are also recycled as well as the manual selectable potentiometer.  All other circuitry and components are new.

Runs on a single, standard 9-12VDC power supply with positive tip polarity and 2.1mm jack

Standard 1/4" output jack.

LED on output signal.

Circuit Bent Casio PT-87

Modified Casio PT-87

Great vintage keyboard from the 1980's with some very interesting modifications.  This one does not have the traditional bends in the circuit.  Because of the chips used to make this keyboard, the bends I found seemed boring and did not produce an interesting variation of output signal/sound.  So I decided to keep the design effective and

Modifications made to this instrument:

• LFO, with Hi and Low frequency settings
• Frequency control
• On/Off switch
• LFO Shape and Depth controls 

• Pitch control
  
•  Filter
• Frequency and shape control
• True Bypass switch

• 1/4" Mono output jack

Short Demo Video:

Audio routed to my Eurorack Pro -> Computer.  No other effects used.

New Stuff On Its Way

I am in the process of completing a Casio PT-87.  Modifications to include a LFO and filter circuit.  More to come in a few days for this one!

Also in the works is a Pulse Width Modulated (PWM) Filter with added LFO.  This will be a standalone table top type unit housed in a die cast enclosure.

Additionally, I am working on another Atari Punk Console.  This circuit will have added features to manipulate the output wave shape. It will be housed in a unique, recycled, precision motor controller enclosure. 

--FrankenMusik

Atari Punk Console, Joystick Controller

Just completed another version of the Atari Punk Console (APC).  This one is housed in an Atari Joystick Controller.

Standard dual controls for the oscillators.  This device utilizes the 4-positions of the joystick and the button to change an alter the sound.

1/4" mono output jack
2.1mm input power jack (7-9VDC)
LED out output signal

Video Demo:

Polivoks Filter

Here is a version of the Polivoks Voltage Controlled Filter.

Circuit is based on the LM4250 Programmable OP Amps.  Features:

• Resonance, or "Q" Control
• Cutoff Frequency Control
• LP and BP Filter Settings
• On-board LFO
• Frequency Control
• On/Off Switch
• FM Control (controls the amount of oscillation of filtering)
• 1/4" Input and Output Jacks
• Input Gain Control
•  True Bypass
• Runs on 12VDC input power

I used the LTC1144 IC to make a dual voltage power supply for the circuit (+/- 12VDC).  This worked the best, straight forward and effective solution.

Assembled Unit Demo:

Circuit in development:

Photos of finished filter.

Designed for those who want table top units, guitar pedal type FX units.