2 layers99.7 × 74.8 mm
2 layers99.7 × 74.2 mm
Split steno rev3.1
samlli/Split-Steno2Split Stenographic Keyboard
- Size
- 99.7 × 74.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 55
- Pads
- 326
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 4
- Created
- 1 Mar 2018
- Updated
- 13 Sep 2018
Overview
Split steno rev3.1 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 99.7 × 74.2 mm with 65 parts on 55 nets.
It is built around the ATXMEGA128A4U-AU, 74LVC1G34Z and WS2812B, with the TC2030-IDC-NL among its other parts. Its parts include 22 switches, 13 capacitors, 7 diodes, 5 resistors and 4 ICs. 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
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | SW_Push | MX_Alps_Hybrid:MX-1U-NoLED | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18 +2 |
| 10 | 0.1uF | Capacitors_SMD:C_0603_HandSoldering | C1, C2, C3, C4, C5, C6, C9, C10, C11, C12 |
| 6 | MountingHole_2.2mm_M2 | Mounting_Holes:MountingHole_2.2mm_M2 | M2, M2, M2, M2, M2, M2 |
| 6 | WS2812B | WS2812B:WS2812B | LED1, LED2, LED3, LED4, LED5, LED6 |
| 2 | 100k | Resistors_SMD:R_0603_HandSoldering | R4, R5 |
| 2 | 4.7k | Resistors_SMD:R_0603_HandSoldering | R7, R8 |
| 2 | SW_Push | MX_Alps_Hybrid:MX-2U-NoLED | SW19, SW20 |
| 1 | 10k | Resistors_SMD:R_0603_HandSoldering | R6 |
| 1 | 10uF | Capacitors_SMD:C_0603_HandSoldering | C13 |
| 1 | 1uF | Capacitors_SMD:C_0603_HandSoldering | C8 |
| 1 | 47uF | Capacitors_SMD:C_0603_HandSoldering | C14 |
| 1 | 74LVC1G34 | TO_SOT_Packages_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | ATXMEGA128A4U-AU | Housings_QFP:TQFP-44_10x10mm_Pitch0.8mm | U5 |
| 1 | Audio-Jack-4 | Keebio-Parts:TRRS-PJ-320A | J2 |
| 1 | BAT CHK | jumper:Jumper_1x02_P2.54mm_THT | JP1 |
| 1 | Battery | battery:CR2032_BK-913 | BT1 |
| 1 | Conn_01x03 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J3 |
| 1 | D_Schottky_x2_KCom_AAK | TO_SOT_Packages_SMD:SOT-23_Handsoldering | D1 |
| 1 | Fuse | Fuse_Holders_and_Fuses:Fuse_SMD1206_HandSoldering | F1 |
| 1 | MCP1700 | TO_SOT_Packages_SMD:SOT-23_Handsoldering | U4 |
| 1 | NO SW | jumper:Jumper_1x02_P2.54mm_THT | JP2 |
| 1 | SW_Push | Keebio-Parts:SW_Tactile_SPST_Angled_MJTP1117 | SW21 |
| 1 | Switch-6P-2S2T | switch:SlideSwitch_C&K_JS202011CQN | SW22 |
| 1 | TC2030-IDC | Tag-Connect:TC2030-NL_SMALL_AND_IDC_PDI | P1 |
| 1 | USB_OTG | keyboard_parts:USB_miniB_hirose_5S8 | J1 |
| 1 | nRF24L01_module | nordic:NRF24L01-Module-SMD | U6 |
Questions
How big is the Split steno rev3.1 PCB?
It measures 99.7 × 74.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Split steno rev3.1 use?
65 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 rev3.1 KiCad files?
From the samlli/Split-Steno repository on GitHub, at the commit this page was made from: the board is rev3.1/split_steno_rev3.1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Split steno rev3.1 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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