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X68KFDPi2W

aotta·X68KFDPi2W·Kicad/X68KFDPI2.kicad_pcb

X68KFDPi2W PCB layout, top view — open source RP2040/RP2350 board by aotta

About the X68KFDPi2W PCB

X68KFDPi2W is an open source RP2040/RP2350 PCB design by aotta, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 86.3 × 106.4 mm, with 29 components from 19 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the 74LVC245. By type, the board carries 11 resistors, 9 connectors, 3 diodes, 2 ICs, 2 switches and 1 buzzer.

From the project

X68KFDPi2W - Floppies drive emulator All-In-One for Sharp X68000

The design is an evolution of my previous X68KFDPico, and allows the two drives of the X68000 to be emulated both externally and internally connected. The engine of the emulator are two Raspberry Pico, one ‘normal’ to handle the special floppy signals and the other ‘W’ to emulate the floppies, SDcard image management and a simple web server to choose the disks to be inserted in the floppies. Ejection and insertion of the disks can be done via the two keys in the X68KFDPi2W or by connecting the cables of the original floppy keys (in case they are not present internally). The same for the…

X68KFDPi2W, from the project README
From the project README

Main components on the X68KFDPi2W

Pico74LVC245

X68KFDPi2W bill of materials (BOM)

29 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Pico
U1
1
74LVC245
U2
1
HxC Connector
J1
1
FD Ext Connector
J2
1
FD00
J3
1
FD01
J4
1
LEDFD0
LedFD0
J7
1
LEDFD1
LedFD1
J8
1
FloppyPWR
J9
1
Micro_SD_Card
J11
1
FD Int/Ext (0,1/2,3)
J13
1
Buzzer
BZ1
1
PicoW
RP1
2
SW_Push
SW1, SW2
1
1N5817
D1
2
LED
D2, D3
6
R330
R1, R2, R3, R4, R5, R6
2
10K
10k
R7, R8
3
4.7K
R9, R10, R11

X68KFDPi2W design files

The KiCad project lives in the aotta/X68KFDPi2W repository on GitHub; these links point at the commit this page was built from.

X68KFDPi2W: common questions

What microcontroller does the X68KFDPi2W use?

The X68KFDPi2W is built around the Pico, from the RP2040/RP2350 family.

How big is the X68KFDPi2W PCB?

The X68KFDPi2W measures 86.3 × 106.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the X68KFDPi2W?

29 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the X68KFDPi2W design files?

From the aotta/X68KFDPi2W repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the X68KFDPi2W design in my own project?

Yes, under the terms of its GPL-3.0 license, which aotta chose for the repository.

Can I test firmware for the X68KFDPi2W without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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