This is an updated PCB for Tremshifter. The original idea is Dead Astronaut effects. I built a few his PCBs, but didn’t like the layout and construction, so I designed my own PCB.
My first version had some issues, this second version takes care of those problems.
Schematic
This is an update Schematic.
BOM
| C1 | 1n |
| C2 | 47µ |
| C3 | 10n |
| C4 | 4µ7 |
| C5 | 1µ |
| C6 | 100µ |
| C7 | 2n2 |
| C8 | 330p |
| C9 | 22n |
| C10 | 10µ |
| C11 | 4n7 |
| C12 | 10n |
| C13 | 22p |
| C14 | 100n |
| D1 | LED (bypass LED) |
| D3 | 1n5817 |
| DF | LED (Filter indicator LED) |
| DT | LED (Tremolo indicator LED) |
| FDEPTH | B100K 16MM |
| FILTER | on/off SPDT |
| FRATE | A1M 16MM |
| IC1 | 1458 (dual op-amp) |
| IC2 | 1458 (dual op-amp) |
| IC3 | 1458 (dual op-amp) |
| LDR1 | LDR 2k-24k + LED Blue Super Bright |
| LDR2 | LDR 2k-24k + LED Green |
| R1 | 220K |
| R2 | 220K |
| R3 | 220K |
| R4 | 220K |
| R5 | 6K8 |
| R6 | 1K |
| R7 | 220K |
| R8 | 1M |
| R9 | 1K |
| R10 | 10K |
| R11 | 470K |
| R12 | 100K |
| R13 | 100K |
| R14 | 100K |
| R15 | 100K |
| R16 | 220K |
| R17 | 3K3 |
| R18 | 220K |
| R19 | 1K |
| R20 | 220K |
| R21 | 6K8 |
| R22 | 1M |
| R23 | 1M |
| R24 | 1K |
| R25 | 100r |
| RANGE | on/on SPDT |
| RLED | 1K |
| SQ/TR | on/on SPDT |
| TDEPTH | B1K 16MM |
| TRATE | A1M 16MM |
| VOL | B22K 16MM |
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