HardLabs

1541 Parallel Interface

Beaupre-Circuit-Design·c64-xum1541·xum1541-parallel-adapter/xum1541-parallel-adapter.kicad_pcb

1541 Parallel Interface PCB layout, top view — open source board by Beaupre-Circuit-Design

About the 1541 Parallel Interface PCB

1541 Parallel Interface is an open source PCB design by Beaupre-Circuit-Design, published on GitHub under the MIT license. It is a 2-layer board measuring 72 × 25 mm, with 5 components from 5 distinct parts.

By type, the board carries 1 connector, 1 switch, 1 diode and 1 resistor.

It belongs with the retro computing designs in this gallery.

From the project

An OpenCBM compatible interface for the 1541 disk drive that can be used to backup and restore floppies.

A SpeedDos compatible interface for the 1541 disk drive to enable parallel communication.

Component selection isn't terribly critical, whathever you have in hand that fit the values will probably work just fine. Values for the led resistors will drive them at around 18ma which may be quite bright, increase the values if it's the case.

As alway, when assembling, start with the smallest components and grow in size as you go.

1541 Parallel Interface bill of materials (BOM)

5 components, 5 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CONN_02X06_ODD_EVEN
Conn_02x06_Odd_Even
XFCN
J1
1
SW_Push
SW1
1
C64_USER_PORT
C64_User_Port
UP1
1
LED
PARALIGHT
D1
1
180
270
Uniroyal Elec
R1

1541 Parallel Interface design files

The KiCad project lives in the Beaupre-Circuit-Design/c64-xum1541 repository on GitHub; these links point at the commit this page was built from.

1541 Parallel Interface: common questions

How big is the 1541 Parallel Interface PCB?

The 1541 Parallel Interface measures 72 × 25 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 1541 Parallel Interface?

5 components, from 5 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 1541 Parallel Interface design files?

From the Beaupre-Circuit-Design/c64-xum1541 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 1541 Parallel Interface design in my own project?

Yes, under the terms of its MIT license, which Beaupre-Circuit-Design chose for the repository.

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