Enclosure not stated · 10 knobs
Smallsound / Bigsound No Memory DelayVerified
Based on the Smallsound/Bigsound No Memory· 1 other board clones it
From the post
Schematic is avaiable HERE.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 54 rows
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Check before you build · 3 values the reader of this layout was not sure of
- 1Ω resistor at column 9 rows U-W next to D1: printed clearly, unusual value
- 10Ω resistor at column 12 rows H-J: printed clearly, unusual value
- IC2 is printed only as '1458' (no prefix), kept as printed
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 17 | ||||
| ×7 | 10K | 10k | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×4 | 22K | 22k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 1Ω | 1 | read from the layout by eye | |
| ×1 | 10Ω | 10 | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 8.2K | 8.2k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 150K | 150k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 15 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 27nF | 27n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×8 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×6 | 1uF | 1u | read from the layout by eye | |
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| ×1 | 470uF | 470u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| ×2 | 1N4738A | 1N4738A / 8V2 | D3, D4; 8.2V zener; read from the layout by eye | |
| D5 | 1N4148 | 1N4148 | read from the layout by eye | |
| D6 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N7000 | 2N7000 | MOSFET; read from the layout by eye | |
| Q2 | BC560B | BC560B | read from the layout by eye | |
| ICs 4 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | 1458 | 1458 | read from the layout by eye | |
| IC3 | PT2399 | PT2399 | read from the layout by eye | |
| REG | LM7805 | LM7805 | regulator; read from the layout by eye | |
| Potentiometers 7 | ||||
| Dry | B50K | B50k | Potentiometer | read from the layout by eye |
| Wet | B50K | B50k | Potentiometer | read from the layout by eye |
| Time | C50K | C50k | Potentiometer | read from the layout by eye |
| Feedback | A50K | A50k | Potentiometer | read from the layout by eye |
| Bend | B100K | B100k | Potentiometer | read from the layout by eye |
| Eq | C250K | C250k | Potentiometer | read from the layout by eye |
| Range | C1M | C1M | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 100K | 100k | read from the layout by eye | |
| Switches 3 | ||||
| Lag Sw | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |
| Sweep Sw | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Mod Sw | 3PDT | 3PDT | footswitch (effect control); read from the layout by eye | |
| LEDs 2 | ||||
| D1 | 3mm yellow LED | 3MM YELLOW LED | read from the layout by eye | |
| D2 | 3mm red LED | 3MM RED LED | read from the layout by eye | |
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