Schematic Diagram/Service Manual
The Siel MK 900 is an Italian synth from the mid-1980's. It has preprogrammed beats, chords, arpeggios, and I believe mostly analog circuitry (even though it says PCM on the unit itself). It is related to these keyboards (similar circuitry ... Read more
PCB prototyping software
PCBMill is a PCB prototyping software.
It can generate isolation milling path from industrial standard Gerber files.
Mill and drill your prototype PCB on your CNC machine in minutes.
The software is Beta version and is freeware at the ... Read more
Arp Sequencer 1601
The ARP Sequencer, model 1601, is a 16 step sequential voltage generator. A voltage level slider is provided for each of the 16 steps to adjust the vlotage output from 0 to +10 volts. The sequencer may be used in a "8x2" mode so that outputs 1 throug... Read more