2 layers223 × 72.2 mm
2 layers109 × 71 mm
Gamma split
ahtn/keyboard_pcb96- Size
- 109 × 71 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 156
- Nets
- 116
- Pads
- 532
- Tracks, vias
- 2,241, 227
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 16 Sep 2017
- Updated
- 19 Apr 2018
Overview
Gamma split is an open-source printed circuit board by ahtn, from the ahtn/keyboard_pcb repository on GitHub. It is a 2-layer board of 109 × 71 mm with 156 parts on 116 nets, routed with 2,241 tracks and 227 vias.
It is built around the 74LVC1G34Z, FSUSB42MUX and MCP73831, with the WS2812B, K12 and K13 among its other parts. Its parts include 38 diodes, 27 capacitors, 26 switches, 12 resistors and 9 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
12
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
FSUSB42MUX
MSOP-10-40℃~+85℃ 12ns 13ns 2 250ps 2:1 3.7pF 3.9Ω 3V~4.4V 720MHz MSOP-10 Analog Switches, Multiplexers ROHSonsemiAnalog Switches, Multiplexers
MCP73831
UncategorisedMicrochip Technology
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
K12
SOD-123FL-55℃~+125℃ 1 Independent 1A 20V 30A 500uA@20V 550mV@1A SOD-123FL Schottky Diodes ROHSDDFSchottky DiodesK13
SOD-123FLSchottky DiodesGOODWORKK14
SOD-123FL-65℃~+125℃ 1A 200uA@40V 30A 40V 550mV@1A Independent SOD-123FL Schottky Diodes ROHSGOODWORKSchottky DiodesK15
-Switch Accessories / CapsCarlo Gavazzi Computing SolutionsK22
SOD-123FLSchottky DiodesDoeshareK23
SOD-123FLSOD-123FL Schottky Diodes ROHSZhengxinSchottky DiodesK24
SOD-123F-65℃~+150℃ 100uA@40V 2A 40V 50A 550mV@2A Independent SOD-123F Schottky Diodes ROHSHXY MOSFETSchottky Diodes
K31
插件,P=3.7mm188℃ 2.3mm 218℃ 221℃ 250V 250℃ 2A 3.7mm 5.8mm K Plug-in 插件,P=3.7mm Thermal Fuses (TCO) ROHSSETsafe | SETfuseThermal Fuses (TCO)
README
mu_board/README.mdParts
156| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | D | Diode_SMD:D_SOD-123 | D00, D01, D02, D03, D04, D05, D10, D11, D12, D13, D14, D15, D20, D21, D22, D23 +8 |
| 21 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C24 +5 |
| 13 | WS2812B | neopixel:WS2812B | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R6, R7, R8 |
| 4 | 5.1k | Resistor_SMD:R_0805_2012Metric | R9, R10, R11, R12 |
| 4 | MountingHole_6mm | MountingHole:MountingHole_6mm | , , , |
| 3 | FSUSB42 | Package_SSOP:MSOP-10_3x3mm_P0.5mm | U7, U8, U9 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C3, C4 |
| 2 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | 470k | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | Fuse | Resistor_SMD:R_1206_3216Metric | F1, F2 |
| 2 | USB_C_Receptacle | conn_usb:USB_TypeC_DX07B024XJ1 | J1, J2 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C25 |
| 1 | 47uF | Capacitor_SMD:C_1206_3216Metric | C26 |
| 1 | 74LVC1G34 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U5 |
| 1 | A6 | TestPoint:TestPoint_Pad_1.0x1.0mm | J6 |
| 1 | A7 | TestPoint:TestPoint_Pad_1.0x1.0mm | J7 |
| 1 | ATXMEGA-A4U-EPAD | Package_QFP:TQFP-44_10x10mm_P0.8mm | U4 |
| 1 | B0 | TestPoint:TestPoint_Pad_1.0x1.0mm | J8 |
| 1 | BATT CHECK | jumper:Jumper_1x02_P2.54mm_THT | JP3 |
| 1 | Battery | battery:CR2032_MPD_BK-913_NoSolderMask | BT1 |
| 1 | Battery_Cell | Conn_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT2 |
| 1 | D4 | TestPoint:TestPoint_Pad_1.0x1.0mm | J4 |
| 1 | D5 | TestPoint:TestPoint_Pad_1.0x1.0mm | J5 |
| 1 | D_Schottky_x2_KCom_AAK | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | K00 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K00 |
| 1 | K01 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K01 |
| 1 | K02 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K02 |
| 1 | K03 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K03 |
| 1 | K04 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K04 |
| 1 | K05 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K05 |
| 1 | K10 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K10 |
| 1 | K11 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K11 |
| 1 | K12 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K12 |
| 1 | K13 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K13 |
| 1 | K14 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K14 |
| 1 | K15 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K15 |
| 1 | K20 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K20 |
| 1 | K21 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K21 |
| 1 | K22 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K22 |
| 1 | K23 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K23 |
| 1 | K24 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K24 |
| 1 | K25 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K25 |
| 1 | K30 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K30 |
| 1 | K31 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K31 |
| 1 | K32 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K32 |
| 1 | K33 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K33 |
| 1 | K34 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K34 |
| 1 | K35 | switch_mx:Cherry_MX_Matias_Slots_NoSilk_Back | K35 |
| 1 | MCP1700 (3.0V) | Package_TO_SOT_SMD:SOT-23 | U2 |
| 1 | MCP1700 (3.3V) | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | MCP73831 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | NO SW | jumper:Jumper_1x02_P2.54mm_THT | JP2 |
| 1 | NO USB | jumper:Jumper_1x02_P2.54mm_THT | JP1 |
| 1 | SW_Push | switch:SwitchPush_C&K_MultiFoot_RS-187R05A2-DS_And_PTS645_SMT | SW2 |
| 1 | Switch-6P-2S2T | switch:SlideSwitch_C&K_JS202011CQN | SW1 |
| 1 | TC2030-IDC | Tag-Connect:TC2030-NL_SMALL_AND_IDC_PDI | J3 |
| 1 | nRF24L01_module | nordic:NRF24L01-Module-SMD | U6 |
The 131 most common of 156 parts.
Questions
How big is the Gamma split PCB?
It measures 109 × 71 mm and has 2 copper layers, 0.8 mm thick.
What parts does the Gamma split use?
156 parts, built around the 74LVC1G34Z, FSUSB42MUX, MCP73831 and WS2812B. 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 Gamma split KiCad files?
From the ahtn/keyboard_pcb repository on GitHub, at the commit this page was made from: the board is gamma_split/gamma_split.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gamma split design in my own project?
Its repository states no licence, so its author keeps all rights: ask ahtn before reusing the design.
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