HardLabs

OpenKickstartSwitcherCDTV

SukkoPera·OpenKickstartSwitcherCDTV

OpenKickstartSwitcherCDTV PCB layout, top view — open source board by SukkoPera
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About the OpenKickstartSwitcherCDTV PCB

OpenKickstartSwitcherCDTV is an open source PCB design by SukkoPera, published on GitHub under the Custom license license. It is a 2-layer board measuring 25.7 × 76.6 mm, with 10 components from 8 distinct parts.

Other key parts include the KS_SOCKET, M27C800 and 7400. By type, the board carries 4 resistors, 3 ICs, 2 connectors and 1 capacitor.

It belongs with the retro computing designs in this gallery.

From the project

Open Hardware Kickstart Switcher for the Commodore CDTV

It allows switching among three or six different Kickstart images stored in an EPROM. The switching can be done through physical switches or by pressing the mouse/joystick buttons at power-up. The latter requires an external add-on board that is another project of mine.

The value of the two single resistors is not critical, 10k is recommended but probably any value between 5k and 50k will do.

OpenKickstartSwitcherCDTV, from the project README
From the project README

Main components on the OpenKickstartSwitcherCDTV

KS_SOCKETM27C8007400

OpenKickstartSwitcherCDTV bill of materials (BOM)

10 components, 8 distinct parts.

QtyPartRefs
1
KS_SOCKET
U1
1
M27C800
U2
1
7400
U3
1
Conn_01x04
J2
1
Conn_01x03
J4
1
100n
C1
2
10k
R1, R2
2
9x4k7
RN1, RN2

OpenKickstartSwitcherCDTV design files

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

OpenKickstartSwitcherCDTV: common questions

How big is the OpenKickstartSwitcherCDTV PCB?

The OpenKickstartSwitcherCDTV measures 25.7 × 76.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpenKickstartSwitcherCDTV?

10 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the OpenKickstartSwitcherCDTV design files?

From the SukkoPera/OpenKickstartSwitcherCDTV repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OpenKickstartSwitcherCDTV design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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