To go with my 6 Poly DCO I have started the next stage in the chain which is the ADSR, I have taken Jan’s initial design and remove two Envelope generators to make it 6 channel, added some power leds, some output LED’s and CV input jacks, normaled output jacks etc…
Schematics are more or less fianly done after a bit of swapping abut.
All went a bit “Pete Tong” Today that’s a uk reference so you may need to wiki it…
I was finishing the front panel and needed the legends for the power LED’s when I looked at the routed PCB one of them had no power. I checked the schematic and it was ok.
I deleted the tracks and the rats nest showed the power net. So I routed it again and the same result. Deleted the powernet, recreated , re, routed , same result…
Previously I had had an odd occurrence on this schematic with a phantom connection to the GND net. I deleted all the power componenets and then got an error.
So i loaded the schematic into NotePad++, deleted all the power components which were oddly still in the file.
That worked but broke the relationship with the sub-sheet and also odly lost some global labels. That fixes the schematic was looking ok again and all the power oddities hopefully sorted.
Loading the PCB and importing updates however caused the previous lost subsheet to re-generate their associations and as such delete old footprints and loaded onto the PCB in new locations. I had to cancel, reload the board without deleting footprints and then allign the new over the old before deleting the old ( although eeschematic though they were the same thing )…
Hopefully sorted and it will route out correctly now.
Apart from another slight fault it did a great job of stopping the gate input to the EnvGen8 working.
So a wrongly laid out pair of diodes. ( magically made themselves incorrect )
Not realising Gate and Trigger had to be tied on the EG8 if there was no seperate trigger.
Not having a current limiting resistor on the telltale LED’s
And the resistors being far too low on the power 3mm LED’s