2 layers180 × 110 mm
ISD1700 sampler main board
hiro-akihabara/OpnBeat
OpnBeat is open source Lo-fi sampler project
180 parts67GPL-3.0
2 layers87.3 × 86.3 mm
Donut
cnlohr/donut8MAGFest /is/ a donut.
- Size
- 87.3 × 86.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 34
- Pads
- 162
- Tracks, vias
- 761, 126
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 6 Sep 2017
- Updated
- 3 Feb 2018
Overview
Donut is an open-source printed circuit board by cnlohr, from the cnlohr/donut repository on GitHub. It is a 2-layer board of 87.3 × 86.3 mm with 54 parts on 34 nets, routed with 761 tracks and 126 vias.
It is built around the ATMEGA48PA-MU and PAD1. Its parts include 16 connectors, 14 switches, 8 resistors, 6 capacitors and 4 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mddonut
MAGFest /is/ a donut.
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | PAD2 | SMTPIN | P2, P3, P5, P6, P7, P9, P10, P11, P12, P13, P14 |
| 3 | .33uF | C_0603 | C2, C3, C6 |
| 3 | 560 | R_0805 | R2, R3, R4 |
| 3 | PAD1 | SMTPIN | P1, P4, P8 |
| 2 | 10pF | C_0603 | C4, C5 |
| 2 | 470k | R_0805 | R7, R8 |
| 2 | Battery_Cell | S8211-45R | BT1, BT2 |
| 2 | NP | R_0805 | R5, R6 |
| 2 | NP | LED_0603 | D1, D3 |
| 2 | RED | LED_0603 | D2, D4 |
| 1 | 100 | R_0805 | R1 |
| 1 | 10uF | C_0603 | C1 |
| 1 | 12MHz | XTAL4P | X1 |
| 1 | A | TACTILE10Small | SW10 |
| 1 | A# | TACTILE10Small | SW11 |
| 1 | ATMEGA48PA-MU | TQFP-32_7x7mm_Pitch0.8mm | U1 |
| 1 | AVRISP6 | RIBBON6SMT_POGO | J1 |
| 1 | B | TACTILE10Small | SW12 |
| 1 | C | TACTILE10Small | SW1 |
| 1 | C# | TACTILE10Small | SW2 |
| 1 | C' | TACTILE10Small | SW14 |
| 1 | D | TACTILE10Small | SW3 |
| 1 | D# | TACTILE10Small | SW4 |
| 1 | E | TACTILE10Small | SW5 |
| 1 | F | TACTILE10Small | SW6 |
| 1 | F# | TACTILE10Small | SW7 |
| 1 | G | TACTILE10Small | SW8 |
| 1 | G# | TACTILE10Small | SW9 |
| 1 | Jack | 3.5mm_barrel_jack_MJ-3536N | J2 |
| 1 | MODE | TACTILE10Small | SW13 |
| 1 | PAD1 | kingdonut2 | G0 |
| 1 | TSDP343xx | TO-92_Inline_Narrow_Oval | U2 |
Questions
How big is the Donut PCB?
It measures 87.3 × 86.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Donut use?
54 parts, built around the ATMEGA48PA-MU and PAD1. 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 Donut KiCad files?
From the cnlohr/donut repository on GitHub, at the commit this page was made from: the board is donut.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Donut design in my own project?
Its repository states no licence, so its author keeps all rights: ask cnlohr before reusing the design.
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