VCO based on the CEM3340 chip.

The 1222 Performance VCO is Look Mum No Computer's first Oscillator PCB Design. Born from frustration of playing shows, or not having a tuner to hand and getting in tune enough to get going, instead of sitting around being out of tune. Its also got an octave knob. a fine tune knob that is exactly an octave with a centre point of C making it easy to find the note you need. Big simple controls, pulse width, PWM, fine tune, Extra CV, Sync, FM, Square, Ramp and Triangle outputs. It also has a rear connection called LINK, which will be for future use.

Features:

• Octave Switch adds 0-4 volts—or 5 octaves—to the 1v/oct signal.
• Fine Tune has a one octave range.
• Tuner shows the nearest note and LEDs indicate wether it’s flat (left), sharp (right) or bang on (middle).
• Pulse Width can be adjusted from 0-50%.
• Additional Frequency CV input and attenuator.
• Pulse Width Modulation CV input and attenuator.
• Frequency Sync input. Works best with simple waveforms.
• Frequency Modulation CV input.
• Simultaneous Pulse, Ramp and Triangle outputs. Note that the outputs are unipolar audio signals with levels that vary from +4v to +8V