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Initial ATMega32 board (EU-5 ADSR32)
Second PT2399 reverb (EU-4 Reverb)
Third VCO - based on Format VCO (VCO3)
1 - try out ATMega 32 for digital applications with more IO
2 - PT2399 2nd revision
3 - Formant VCO modification 3rd rev
| Stage | Detail | Status |
|---|---|---|
| create material | sch/pcb | OK |
| gerber | OK | |
| production | OK | |
| produced | OK | |
| delivered | OK |
| Test | Detail | Status |
|---|---|---|
| Initial Inspection | OK | |
| Initial Technical Test | ADSR | ICSP:ok - Serial: no success - LED: OK - POT:no success |
| Initial Technical Test | Reverb | OK |
| Initial Technical Test | VCO3 | OK |
| Initial Product Test | ADSR | ADC not working due to GND conn to Aref |
| Initial Product Test | Reverb | Works nicely (tested with 5V from 16pin Doepfer |
| Initial Product Test | VCO3 | Working - output and "sine" - Square not working - UMX1 works nicely as CV - FM works - LFO works - POT's reversed... |
| Test | Detail | Status |
|---|---|---|
| Product Test | ||
| Product Test | ||
| Product Test | VCO | Square not working |
| Quality |
| Quality |
| Quality | VCO3 | Range from 20Hz |
| Long Term Product Test |
| Long Term Product Test |
| Long Term Product Test |
| Power Draw |
| Power Draw |
| Power Draw | VCO3 | +5V 1mA, +12V 7mA, -12V 6mA |
1 - ALL pots are reversed
1 - ADC not working due to GND conn to Aref - fix by bending leg so it does not get soldered
1 - C104 needs to be bigger (tried w 20uf that worked nicely)
2 - Square circuit not working
3 - Unsure of trigger feature
4 - ALL pots are reversed
5 - Consider adding LED
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