HardLabs

AmigaDualFloppyInterface

roddersuk·AmigaDualFloppyInterface·KiCad/AmigaDualFloppyInterface.kicad_pcb

AmigaDualFloppyInterface PCB layout, top view — open source board by roddersuk
Simulate this board

About the AmigaDualFloppyInterface PCB

AmigaDualFloppyInterface is an open source PCB design by roddersuk, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 56 × 71.6 mm, with 23 components from 17 distinct parts.

Other key parts include the 74LS38, 74LS74 and 74LS157. By type, the board carries 8 connectors, 8 resistors, 3 ICs, 3 capacitors and 1 transistor.

It belongs with the retro computing designs in this gallery.

From the project

Amiga 500 6A Dual Internal Floppy Drive Interface

N.B. I have only tested that this board works with an Issue 6A motherboard

I have recently acquired an Amiga 500 and wanted to expand its capability by adding a Gotek drive but didn't want to lose the internal floppy drive. I soon came across some of the restrictions of the A500 design which basically meant that if you have the Gotek as the primary, bootable drive the internal floppy drive (df1) wouldn't work. I could have course have gone down the external floppy route but I didn't want all that stuff hanging out the back of the Amiga.

AmigaDualFloppyInterface, from the project README
From the project README

Main components on the AmigaDualFloppyInterface

74LS3874LS7474LS157

AmigaDualFloppyInterface bill of materials (BOM)

23 components, 17 distinct parts.

QtyPartRefs
1
74LS38
U1
1
74LS74
U2
1
74LS157
U3
1
2N3906
Q1
1
Floppy Power In
J1
1
Floppy B
J2
1
Motherboard
J3
1
Floppy Power Out
J4
1
Floppy A
J5
1
Drive Switch
J6
1
Conn_01x02_Pin
J7
1
DF1 Activity
J8
3
100nF
C1, C2, C3
5
1k
R1, R2, R3, R4, R7
1
12k
R5
1
10k
R6
1
4.7k
R8

AmigaDualFloppyInterface design files

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

AmigaDualFloppyInterface: common questions

How big is the AmigaDualFloppyInterface PCB?

The AmigaDualFloppyInterface measures 56 × 71.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AmigaDualFloppyInterface?

23 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the AmigaDualFloppyInterface design files?

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

Can I use the AmigaDualFloppyInterface design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which roddersuk chose for the repository.

Similar boards