2 layers99.7 × 74.8 mm
2 layers99 × 88 mm
Split steno rev2.0
samlli/Split-Steno2Split Stenographic Keyboard
- Size
- 99 × 88 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 47
- Nets
- 50
- Pads
- 537
- Tracks, vias
- 65, 0
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 1 Mar 2018
- Updated
- 13 Sep 2018
Overview
Split steno rev2.0 is an open-source printed circuit board by samlli, from the samlli/Split-Steno repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 99 × 88 mm with 47 parts on 50 nets, routed with 65 tracks and 0 vias.
It is built around the ATXMEGA128A4U-AU, 74LVC1G34Z and WS2812B, with the TC2030-IDC-NL among its other parts. Its parts include 21 switches, 9 capacitors, 4 diodes, 4 connectors and 3 resistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATXMEGA128A4U-AU
TQFP-44(10x10)-40℃~+85℃ 1.6V~3.6V 128KB 12bit 12bit 2KB 32MHz 34 8/16 Bit 8KB AVR Built-in FLASH TQFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
74LVC1G34Z
SOT-553-5-40℃~+125℃ 1 1 1.65V~5.5V 1.6ns@5V,50pF 10uA 32mA 32mA 74LVC Power-off isolation Push-pull Unidirectional SOT-553-5 Buffers, Drivers, Receivers, Transceivers ROHSDiodes IncorporatedBuffers, Drivers, Receivers, Transceivers
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
TC2030-IDC-NL
UncategorisedTag Connect
README
rev2.0/README.mdrev2.0
WARNING: INCOMPLETE/ABANDONED
Reason: big forehead, decided to scrap and proceed with 2.1
Features:
Integrated ATxmega controller
SMD only
No Diodes
Reversible PCB
Parts
47| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | SW_Push | Keebio-Parts:Hybrid_PCB_100H_Dual_hole | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18 +2 |
| 8 | 0.1uF | Capacitors_SMD:C_0603_HandSoldering | C1, C2, C3, C4, C6, C7, C8, C9 |
| 4 | WS2812B | WS2812B:WS2812B | LED1, LED2, LED3, LED4 |
| 2 | 4.7k | Resistors_SMD:R_0603_HandSoldering | R1, R2 |
| 2 | SW_Push | Keebio-Parts:Hybrid_PCB_200H-dual-nosilk | SW19, SW20 |
| 1 | 10k | Resistors_SMD:R_0603_HandSoldering | R4 |
| 1 | 10uF | Capacitors_SMD:C_0603_HandSoldering | C5 |
| 1 | 74LVC1G34 | TO_SOT_Packages_SMD:SOT-353_SC-70-5_Handsoldering | U1 |
| 1 | ATXMEGA128A4U-AU | Housings_QFP:TQFP-44_10x10mm_Pitch0.8mm | U3 |
| 1 | Audio-Jack-4 | Keebio-Parts:TRRS-PJ-320A | J1 |
| 1 | LOGO | airi_logo:airi_icon-7.6 | G*** |
| 1 | MIC550X | TO_SOT_Packages_SMD:SOT-23-5_HandSoldering | U2 |
| 1 | SW_Push | switch:SwitchPush_C&K_MultiFoot_RS-187R05A2-DS_And_PTS645_SMT | SW21 |
| 1 | TC2030-IDC | Connectors:Tag-Connect_TC2030-IDC-NL | P1 |
| 1 | USB_B | keyboard_parts:USB_miniB | J1 |
| 1 | USB_OTG | keyboard_parts:USB_miniB | J2 |
The 45 most common of 47 parts.
Questions
How big is the Split steno rev2.0 PCB?
It measures 99 × 88 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Split steno rev2.0 use?
47 parts, built around the ATXMEGA128A4U-AU, 74LVC1G34Z, WS2812B and TC2030-IDC-NL. 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 Split steno rev2.0 KiCad files?
From the samlli/Split-Steno repository on GitHub, at the commit this page was made from: the board is rev2.0/split_steno_rev2.0.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Split steno rev2.0 design in my own project?
Its repository publishes it under the GPL-3.0 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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