Errata

This is a collection of known PCB fuckups.

56 ch sample-and-hold card v1.0

- Rear rows of the output connectors are not connected to CV output so no CVs will arrive at the mainboard.

Mainboard v1.1.1

- IC2, selector switch for Waveform/PCM Wave: The control and output pins are mixed up. For testing, a workaround is a manual jumper and no DG413 switch, since PCM Wave is a future ad-on anyway. Can also be solved by creating a custom card with an SMD DG413 on it, with the pins routed correctly

- Waveshaper sub oscillator waveform selectors: Waveforms for sub-1 and sub-2 have been reversed, so when sub-1 is square, sub-2 is saw and vice versa. Can be fixed on an updated waveshaper card or the same way as the IC2, by doing a custom DG413.

VCO v2.0

- The saw output from the saw never reaches above 4V, it flatlines halfway through. This is caused by the 1k/1k resistor voltage divider in front of the comparator used to create the square wave. Also, the 1k/1k divider reduces the 0-8V saw to 0-4V, it should have been 0-5V. 

This seems to be fixed by replacing the divider with 100k/168k.

Distortion, multi FX v1.1

When doing the multi-FX board I used the wrong version of the distortion circuit, so this one has no output gain. Thus, the output is way too low.

There are no spare op amps on the board, but there IS one spare OTA. Perhaps I can reconfigure that one as gain.

Juno filter

- Not sure this is an error yet, but the output directly from the circuit seems to be +/-500mV from a +/-5V input. It should be +/-1V I think. I misread the schematics, I put an external 230k resistor on the input when the juno board already has one, meaning the input was attenuated by 50%