2 layers37.1 × 29.4 mm
Parallel to PS2-Keyboard Adapter
djtersteegc/Xerox-820-Projects
Various PCB's and info for the Xerox 820 computer
10 parts4MIT
2 layers35.9 × 68 mm
GKA AT68
costarc/X68000-Keyboard-Adapter1My PCB version of the GKA-AT68 PS/2 adapter for X68000
- Size
- 35.9 × 68 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 32
- Pads
- 79
- Tracks, vias
- 184, 6
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Sep 2024
- Updated
- 7 Jun 2025
Overview
GKA AT68 is an open-source printed circuit board by costarc, from the costarc/X68000-Keyboard-Adapter repository on GitHub, published under the MIT licence. It is a 2-layer board of 35.9 × 68 mm with 28 parts on 32 nets, routed with 184 tracks and 6 vias.
It is built around the PIC16F84A-04/P and 2SC1815. Its parts include 12 resistors, 3 capacitors, 2 transistors, 2 connectors and 1 IC. It belongs with the PIC boards of this library.
Main components
2
PIC16F84A-04/P
DIP-180℃~+70℃ 1.75KB 13 4MHz 4V~5.5V 64Byte 68Byte 8 Bit External FLASH PIC DIP-18 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
2SC1815
SOT-23-55℃~+150℃ 1 NPN 100nA 130 150mA 200mW 250mV 50V 5V 80MHz NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6 |
| 6 | MountingHole | MountingHole:MountingHole_2.1mm | H1, H2, H3, H4, H5, H6 |
| 5 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8, R9, R11, R12 |
| 2 | 2SC1815 | Package_TO_SOT_THT:TO-92_HandSolder | Q1, Q2 |
| 2 | 30pF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C2, C3 |
| 1 | 104 | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 560R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10 |
| 1 | 9.8304MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | AT-KB SIDE | Roni Footprints:MINI-DIN-6-FULL-SHIELD | CN2 |
| 1 | LED | LED_THT:LED_D3.0mm | D1 |
| 1 | PIC16F84A | Package_DIP:DIP-18_W7.62mm_Socket | U1 |
| 1 | X68000 Keyboard | Connector_Wire:SolderWire-0.5sqmm_1x06_P4.6mm_D0.9mm_OD2.1mm | CN1 |
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Questions
How big is the GKA AT68 PCB?
It measures 35.9 × 68 mm and has 2 copper layers, 1.6 mm thick.
What parts does the GKA AT68 use?
28 parts, built around the PIC16F84A-04/P and 2SC1815. 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 GKA AT68 KiCad files?
From the costarc/X68000-Keyboard-Adapter repository on GitHub, at the commit this page was made from: the board is Kicad/GKA_AT68.kicad_pcb and its schematic Kicad/GKA_AT68.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GKA AT68 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).