2 layers274 × 158 mm
Acacia
jpsecher/keyboards
Goals - Good ergonomics - Good for programming - No drivers - Configurable - Use standard components where possible
127 parts1ISC
2 layers74.2 × 124.6 mm
Dolphin
evyd13/fin-pad1Replacement PCB for Lin Dolphin Pad
- Size
- 74.2 × 124.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 71
- Nets
- 62
- Pads
- 288
- Tracks, vias
- 333, 34
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 1 Jul 2022
- Updated
- 1 Jul 2022
Overview
Dolphin is an open-source printed circuit board by evyd13, from the evyd13/fin-pad repository on GitHub, published under the MIT licence. It is a 2-layer board of 74.2 × 124.6 mm with 71 parts on 62 nets, routed with 333 tracks and 34 vias.
It is built around the ATMEGA32U2-AU and USBLC6-2SC6. Its parts include 28 switches, 24 diodes, 6 resistors, 5 capacitors and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U2-AU
TQFP-32(7x7)-40℃~+85℃ 16MHz 1KB 1KB 2.7V~5.5V 22 32KB 8 Bit AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontroller Units (MCUs/MPUs/SOCs)
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
README
README.mdFin Pad
Replacement PCB for Lin Dolphin Pad.
License
Read the license before use!
Gerbers
Gerber zip files can be found under gerber/.
BOM
| LCSC part # | Description | Value | Package | Amount |
|---|---|---|---|---|
| C14663 | Capacitor | 0.1uF | 0603 | 3 |
| C19666 | Capacitor | 4.7uF | 0603 | 1 |
| C15849 | Capacitor | 1uF | 0603 | 1 |
| C2128 | Switch diode | 4148 | 0805 | 24 |
| C261942 | Fuse | 0805 | 1 | |
| C165948 | Type-C con. | SMD+TH | 1 | |
| C25804 | Resistor | 10K | 0603 | 2 |
| C23345 | Resistor | 22 | 0603 | 2 |
| C23186 | Resistor | 5.1k | 0603 | 2 |
| C7519 | ESD prot. | SOT23-6 | 1 | |
| C1337609 | MCU | 32U2 | QFP-32 | 1 |
| C341521 | Resonator | 16MHz | SMD | 1 |
| C92584 | Switch | SMD | 1 |
Use at your own risk.
Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 4148 | Keeb_components:D_0805 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +8 |
| 24 | KEYSW | Keeb_switches:CHERRY_PLATE_100H | K1, K2, K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K20, K21, K22, K23 +8 |
| 3 | 0.1u | Keeb_components:C_0603 | C1, C2, C3 |
| 2 | 10k | Keeb_components:R_0603 | R1, R2 |
| 2 | 22 | Keeb_components:R_0603 | R3, R4 |
| 2 | 5.1k | Keeb_components:R_0603 | R5, R6 |
| 2 | KEYSW | Keeb_switches:CHERRY_PCB_200H_V | K16-1, K24-1 |
| 1 | 16MHz | Keeb_components:XTAL_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | X1 |
| 1 | 1A | Keeb_components:R_0805 | F1 |
| 1 | 1u | Keeb_components:C_0603 | C5 |
| 1 | 4.7u | Keeb_components:C_0603 | C4 |
| 1 | ATMEGA32U2 | Keeb_components:MCU_ATMEGA32U2-AU | U1 |
| 1 | HRO-TYPE-C-31-M-12 | Keeb_components:CONN_HRO-TYPE-C-31-M-12 | J1 |
| 1 | ISP | Keeb_components:CONN_isp_standard | J2 |
| 1 | KEYSW | Keeb_switches:CHERRY_PCB_200H_F | K21-1 |
| 1 | LOGO | Keeb_components:GRAPHIC_logo | G*** |
| 1 | LOGO | Keeb_components:GRAPHIC_oshw | G*** |
| 1 | SW_PUSH | Keeb_components:SWITCH_SPST_TL3342 | SW1 |
| 1 | USBLC6-2SC6 | Keeb_components:PACKAGE_SOT-23-6 | U2 |
Questions
How big is the Dolphin PCB?
It measures 74.2 × 124.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dolphin use?
71 parts, built around the ATMEGA32U2-AU and USBLC6-2SC6. 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 Dolphin KiCad files?
From the evyd13/fin-pad repository on GitHub, at the commit this page was made from: the board is dolphin.kicad_pcb and its schematic dolphin.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dolphin design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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