Circuit Bent PSS-140 V2 Finished!

Well, I finally finished the YAMAHA PSS-140.  It didn't take 20 days to modify this instrument : )  I did however tend to either play with the keyboard in its mid altered state or poked around and trying different ideas out.

Th end result is what I present below.

Bent Features:

• 8 - Data line modification, made with 8 three position switches.  Each switch is connected to the data line between the FM and CPU chip.  I also wired up 4 sets of mixed data lines.
• Positions:  Data Line On / Data Line OFF / Swapped Data Line

• LFO, with rate, signal strength controls and on/off switch

• Tone control

• Feedback/Distortion control

• Pitch shift (for all keys above the accompaniment section) lowers the keys several octaves.

Added handles to complete the feel of the modification, adds a bit of weight and sturdiness to the keyboard.  

Where the internal speaker used to reside now is home to the data line switches, pitch, distortion and tone controls.

 LFO section.

Keyboard is useful in "normal mode", as the 100 Voices on board are quite useful, but more then that are the combinations of new sounds that this machine is now able to create.  Designed to be used a a heavy glitch keyboard, but can make some drones if you fine the right combination.

Circuit Bent PSS-140 V2

I am currently in the process of finishing up a bend on a YAMAHA PSS-140 keyboard.  This will include the data line mod, added capability of mixing data lines, filter and LFO.  Pictures to follow in the coming days.

I also got my hands on a CASI SK-1, so this too will get the FrankenMusik treatment!


Stay tuned!!
-FrankenMusik

Hex Box V3 Video

Short demo of the Hex Box V3 in action!!

Hex Box V3

I could not resist the urge to transform this vintage volt/amp meter into a unique one of a kind instrument.  Based on my previous circuits, this Hex Box is the latest version.  I was able to use all of the existing construction of this meter without many physical changes, most notable is the power input and audio output jacks.  Circuit is based around the CD40106 IC, running with 4 oscillators configured into two pairs.

I decided not to repaint this and keep the original patina.  The meter is connected to the power side of the circuit and reads the current draw.  However, due to the range of the analog meter, the readings are not accurate, but it gives a nice effect.  Unit is complete with power LED, on/off switch and volume control.

Videos to be posted soon.

Hex Drone Box/Delay

Video showing with working 40106 based synthesizer unit.

Hex Drone/Delay Box

Pictures of the latest creation.  Runs with 4 oscillators (wired as two pairs), volume control, 1/4" output jack, standard 2.1mm 9VDC supply power (low mA draw). Delay is outfitted with a delay time control and also a repeat control.

Together, both circuits complement each other and endless drones and textures are created.  I will post a video later.

The industrial finish makes for a nice clean look, I will change the hardware soon.

Pictures of the latest creation.  Runs with 4 oscillators (wired as two pairs), volume control, 1/4" output jack, standard 2.1mm 9VDC supply power (low mA draw). Delay is outfitted with a delay time control and also a repeat control. 

Together, both circuits complement each other and endless drones and textures are created.  I will post a video later.

The industrial finish makes for a nice clean look, I will change the hardware soon.