2 layers76.2 × 31 mm
2 layers91.6 × 79.3 mm
X68KFDPI
aotta/X68KFDPi9Sharp X68000 Floppy disk adapter based on Raspberry Pico(C)
- Size
- 91.6 × 79.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 82
- Pads
- 240
- Tracks, vias
- 544, 8
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 21 Jun 2023
- Updated
- 17 Oct 2026
Overview
X68KFDPI is an open-source printed circuit board by aotta, from the aotta/X68KFDPi repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 91.6 × 79.3 mm with 22 parts on 82 nets, routed with 544 tracks and 8 vias.
It is built around the 74LVC245AD. Its parts include 6 resistors, 5 diodes, 4 connectors, 3 ICs and 2 capacitors. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdX68KFDPi
Sharp X68000 Floppy disk adapter based on Raspberry Pico(C)
addedd v.1.1: (last night build) - it should improve reading signals and avoid pressing button when floppy inserted (work in progress, for testing purpouse only!)
Use 2 buttons to give X68k the insert/eject signals: you have to eject the virtual floppy (turn off green led) when led flashes, select the image on HxC/Gotek, then re-insert the virtual floppy (Green led re-turned on). This for disk 1 or 2, as needed. Now it works for all games i tested so far, but led blinking is not fully supported
Note: use only 74LVC245 IC on your adapter, other type of 74XX245 logic IC may damage your Raspberry!
More info on nfg.forums : X68KFDUINO - new adapter for external Floppy Drive for HxC & Gotek
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4 |
| 4 | R330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 2 | 100nF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C2 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R6 |
| 2 | 74LVC245 | Package_DIP:DIP-20_W7.62mm_Socket | U2, U3 |
| 2 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW1, SW2 |
| 1 | BrdPWR | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J15 |
| 1 | D_Schottky | Diode_THT:D_DO-15_P12.70mm_Horizontal | D5 |
| 1 | FD Ext Connector | Connector_IDC:IDC-Header_2x17_P2.54mm_Horizontal | J2 |
| 1 | FloppyPWR | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J8 |
| 1 | HxC Connector | Connector_IDC:IDC-Header_2x17_P2.54mm_Horizontal | J1 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | U1 |
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Questions
How big is the X68KFDPI PCB?
It measures 91.6 × 79.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the X68KFDPI use?
22 parts, built around the 74LVC245AD. 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 X68KFDPI KiCad files?
From the aotta/X68KFDPi repository on GitHub, at the commit this page was made from: the board is KiCAD/X68KFDPI.kicad_pcb and its schematic FDAdapter/FDAdapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the X68KFDPI 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).