

Dredrum
8-bit perc/drone generator for Eurorack systems
- Size
- 48.5 × 108 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 59
- Nets
- 43
- Pads
- 190
- Tracks, vias
- 1,183, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 9 May 2015
- Updated
- 9 May 2015
Overview
Dredrum is an open-source printed circuit board by buranelectrix, from the buranelectrix/dredrum repository on GitHub. It is a 2-layer board of 48.5 × 108 mm with 59 parts on 43 nets, routed with 1,183 tracks and 0 vias.
It is built around the ATMEGA48A-MU and MCP6002-I/P. Its parts include 21 resistors, 12 capacitors, 9 diodes, 6 switches and 4 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2ATMEGA48A-MU
VQFN-32(5x5)-40℃~+85℃ 1.8V~5.5V 10bit 20MHz 23 256Byte 4KB 512Byte 8 Bit AVR Built-in FLASH VQFN-32(5x5) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)MCP6002-I/P
PDIP-8-40℃~+85℃ 1.8V~6V 100uA 1MHz 1pA 1pA 2 23mA 28nV/√Hz@1kHz 2uV/℃ 4.5mV 600V/ms 76dB ESD protection Rail-to-Rail Input, Rail-to-Rail Output PDIP-8 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1k | R-hor75m-centrepads | R13, R14, R15, R16, R17, R18, R19, R20 |
| 4 | 100n | Cap2.5mm-x | C3, C4, C10, C12 |
| 4 | 10k | pot-ALPS-16mm-knob-centrepads | R1, R2, R3, R4 |
| 3 | 100k | R-hor75m-centrepads | R8, R11, R21 |
| 3 | 10k | R-hor75m-centrepads | R5, R6, R7 |
| 2 | 22p | Cap2.5mm-x | C1, C2 |
| 1 | 100p | C-5mm-film-WIMA-7x4 | C8 |
| 1 | 10u | CapEl2.5mm-hor5x10 | C6 |
| 1 | 16k | R-hor75m-centrepads | R10 |
| 1 | 1M | R-hor75m-centrepads | R9 |
| 1 | 1n | C-5mm-film-WIMA-7x4 | C7 |
| 1 | 20MHz | crystal_hc-49u | X?1 |
| 1 | 220u | CapEl2.5mm-hor6x12-MIRR | C11 |
| 1 | 330n | Cap2.5mm-x | C9 |
| 1 | 33k | R-hor75m-centrepads | R12 |
| 1 | 4001 | DO41 | D10 |
| 1 | 680p | C-5mm-film-WIMA-7x4 | C5 |
| 1 | 7805 | 7805-TO92 | U3 |
| 1 | AC-DC | JUMPER | JP1 |
| 1 | ATMEGA48 | DIP-28-300-centrepads | U1 |
| 1 | AUDIO OUT | erthenvar-jackF | J2 |
| 1 | AVRISP6 | ISP6 | J4 |
| 1 | BC549 | TO92-x | T1 |
| 1 | CLICK SWITCH | ninigi-switch-TSSM1022A2 | SW6 |
| 1 | EURO10pin | EURO10pin | J5 |
| 1 | MCP6002 | DIP-8-300-centrepads-x | U2 |
| 1 | NOISE | LED-3mm-MOJE | D5 |
| 1 | OUTPUT | LED-3mm-MOJE | D4 |
| 1 | SAW | LED-3mm-MOJE | D6 |
| 1 | SINE | LED-3mm-MOJE | D8 |
| 1 | SQUARE | LED-3mm-MOJE | D7 |
| 1 | TRIG | push-PCB6mm-centrepads | SW1 |
| 1 | TRIG IN | erthenvar-jackF | J1 |
| 1 | VAL** | hole-circ-3.2mm | hole-3.2mm |
| 1 | VOICE1 | LED-3mm-MOJE | D1 |
| 1 | VOICE1 | push-PCB6mm-centrepads | SW4 |
| 1 | VOICE2 | LED-3mm-MOJE | D2 |
| 1 | VOICE2 | push-PCB6mm-centrepads | SW3 |
| 1 | VOICE3 | LED-3mm-MOJE | D3 |
| 1 | VOICE3 | push-PCB6mm-centrepads | SW5 |
| 1 | WAVE | push-PCB6mm-centrepads | SW2 |
Questions
How big is the Dredrum PCB?
It measures 48.5 × 108 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dredrum use?
59 parts, built around the ATMEGA48A-MU and MCP6002-I/P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Dredrum KiCad files?
From the buranelectrix/dredrum repository on GitHub, at the commit this page was made from: the board is dredrum-KiCad/dredrum.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dredrum design in my own project?
Its repository states no licence, so its author keeps all rights: ask buranelectrix before reusing the design.
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