p[m]anic_button
demo:
4.12.2008
4.11.2008
4.10.2008
4.02.2008
VactrolSynth_v.3 schematic
Here is the schematic for the 3rd revision of my vactrolSynth. It uses only one 4093 quad NAND gate chip. Try experimenting with different capacitor values for the control and audio oscillators to achieve various tonal capabilities. Note: this schematic omits a potentiometer before the vactrol LED... add this for a pseudo pitch control. Try to use a super-bright LED and a photo-resistor with a wide range for excellent frequency response.
4.01.2008
3.31.2008
3.13.2008
2.28.2008
Yamaha CS-5 Synthesizer Repair.
I successfully repaired my CS-5 last night. I was a bit of a struggle because the previous owner attempted the same thing but destroyed the circuit board contacts in the process... I had to do a bit of surgery but it's quite solid now.
For anyone who would like to know: in order to remove the front panel, you need to take off the two plastic ends and then the 3 screws along the bottom in the back. The top should then be free of the body.
Check out this flickr set for more photos.
2.19.2008
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