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Maddie MOD2
Claves
Percussion · Voice
A tunable claves/woodblock voice with morphable sine↔triangle waveform and 1V/oct tracking.
- Width
- 4 HP
- Depth
- 28 mm
- Power
- +12V / −12V / +5V
- MCU
- Seeed XIAO RP2350
- Controls
- 3 pots · button · LED
- I/O
- 2 gate in · 1 CV in · PWM audio out
Overview
A simple, tunable claves/woodblock voice. The waveform morphs continuously between sine and triangle, the pitch tracks 1V/oct, and an exponential envelope with a cosine fade-out keeps the tail click-free. The LED follows the envelope on every hit.
Panel & I/O
| Control | Pin | Function |
|---|---|---|
| POT1 | A0 | Decay time |
| POT2 | A1 | Waveform — sine ↔ triangle morph |
| POT3 / CV | A2 | Pitch (1V/oct) |
| IN1 | GPIO7 | In — Trigger |
| BUTTON | GPIO6 | Manual trigger |
| OUT | GPIO1 | Out — 10-bit PWM audio (~36.6 kHz) |
| LED | GPIO5 | Envelope follower |
Features
- Continuous sine↔triangle waveform morph
- 1V/oct pitch tracking (~50 Hz – 1.5 kHz) with 16-sample averaging
- Click-free exponential envelope
- ~36.6 kHz, 10-bit PWM audio with linear interpolation
Patch ideas
| Sound | Decay | Waveform | Pitch |
|---|---|---|---|
| Classic claves | 30% | 80% (triangle) | ~800 Hz |
| Woodblock | 20% | 90% | ~1200 Hz |
| Melodic perc | 50% | 40% (sine) | 1V/oct from seq |
| Deep tom | 70% | 20% (sine) | 100–200 Hz |
| Rim shot | 15% | 100% | ~1500 Hz |
© 2026 Maddie Synths · firmware based on work by Hagiwo · original firmware CC0 1.0 · hardware design by Hagiwo