2 layers149.3 × 104.5 mm
Sequencer
michd/modular-synth
Building a hardware modular synthesizer, this is where I'll collect module schematics and hardware designs.
132 parts20
2 layers362 × 95.3 mm
Layout help was made with https://github.com/mechkeys/mechkeys
- Size
- 362 × 95.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 269
- Nets
- 207
- Pads
- 1,010
- Tracks, vias
- 2,888, 180
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 13 Feb 2018
- Updated
- 13 Feb 2018
Overview
Sendai is an open-source printed circuit board by bilger321, from the bilger321/sendai-keyboard repository on GitHub. It is a 2-layer board of 362 × 95.3 mm with 269 parts on 207 nets, routed with 2,888 tracks and 180 vias.
It is built around the ATMEGA32U4 and MMBT3904. Its parts include 88 resistors, 84 diodes, 8 capacitors, 1 IC and 1 transistor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdsendai-keyboard
Just a little pet project of mine. Made using kiCAD.
Made with help from https://github.com/ruiqimao/keyboard-pcb-guide
Layout help was made with https://github.com/mechkeys/mechkeys
Code generated with http://kbfirmware.com/
Special Thanks to Jack @ https://github.com/qmk/qmk_firmware
Parts
269| Qty | Value | Footprint | References |
|---|---|---|---|
| 84 | 470 | Resistors_SMD:R_0805_HandSoldering | R1L1, R10L1, R11L1, R12L1, R13L1, R14L1, R15L1, R16L1, R17L1, R18L1, R19L1, R20L1, R21L1, R22L1, R23L1, R24L1 +68 |
| 84 | D | Diodes_SMD:SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +68 |
| 84 | MX_LED | MX_LED | SW_1, SW_2, SW_10, SW_11, SW_12, SW_13, SW_14, SW_15, SW_16, SW_17, SW_18, SW_19, SW_20, SW_21, SW_22, SW_23 +68 |
| 5 | 0.1u | Capacitors_SMD:C_0805_HandSoldering | C3, C4, C5, C6, C7 |
| 2 | 10k | Resistors_SMD:R_0805_HandSoldering | R1, R2 |
| 2 | 22 | Resistors_SMD:R_0805_HandSoldering | R3, R4 |
| 2 | 22p | Capacitors_SMD:C_0805_HandSoldering | C1, C2 |
| 1 | 1u | Capacitors_SMD:C_0805_HandSoldering | C8 |
| 1 | ATMEGA32U4 | Housings_QFP:TQFP-44_10x10mm_Pitch0.8mm | U1 |
| 1 | MMBT3904 | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | SW_PUSH | Buttons_Switches_SMD:SW_SPST_TL3342 | SW1 |
| 1 | USB_mini_micro_B | keyboard_parts:USB_miniB_hirose_5S8 | J1 |
| 1 | XTAL_GND | keyboard_parts:FA-238 | X1 |
Questions
How big is the Sendai PCB?
It measures 362 × 95.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sendai use?
269 parts, built around the ATMEGA32U4 and MMBT3904. 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 Sendai KiCad files?
From the bilger321/sendai-keyboard repository on GitHub, at the commit this page was made from: the board is Sendai.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sendai design in my own project?
Its repository states no licence, so its author keeps all rights: ask bilger321 before reusing the design.
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