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C64-Mega-Switcher

tebl·C64-Mega-Switcher

C64-Mega-Switcher PCB layout, top view — open source board by tebl
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About the C64-Mega-Switcher PCB

C64-Mega-Switcher is an open source PCB design by tebl, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 49.3 × 81.5 mm, with 31 components from 16 distinct parts.

Other key parts include the 74HCT4053 and NE555. By type, the board carries 12 diodes, 7 resistors, 3 ICs, 3 capacitors, 2 connectors and 2 switches.

It belongs with the retro computing designs in this gallery.

From the project

Adapter for using Sega Mega Drive/Genesis controllers on a C64, with builtin port switcher so no more cable switching!

With 8bitdo starting recent productions of new quality wireless controllers for the Sega Mega Drive/Genesis, I thought it was time to look into adapting the usage of these with the Commodore 64. Normally a controller of this type would be HARMFUL to your C64 WITHOUT using of a suitable adapter, a great one was made by SukkoPera a while back and I've taken a lot of inspiration as well as lifting a couple of the kicad footprints from his OpenC64MegaDrivePadAdapter. What this project aims to add into the mix is a way of swapping the active port your joystick is connected to at the press of a…

C64-Mega-Switcher, from the project README
From the project README

Main components on the C64-Mega-Switcher

74HCT4053NE555

C64-Mega-Switcher bill of materials (BOM)

31 components, 16 distinct parts.

QtyPartRefs
2
74HCT4053
U1, U2
1
NE555
U3
1
BC547
Q1
1
C_SEL
J4
1
B_SEL
J5
1
UP
JP1
1
P1_SEL
SW1
1
P2_SEL
SW2
1
P2_LED
D1
1
P1_LED
D2
10
1N4148
D3, D4, D5, D6, D7, D8, D9, D10 +2
3
100nF
C1, C2, C3
2
10k
R1, R2
2
220
R3, R4
2
2k2
R5, R7
1
100k
R6

C64-Mega-Switcher design files

The KiCad project lives in the tebl/C64-Mega-Switcher repository on GitHub; these links point at the commit this page was built from.

C64-Mega-Switcher: common questions

How big is the C64-Mega-Switcher PCB?

The C64-Mega-Switcher measures 49.3 × 81.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the C64-Mega-Switcher?

31 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the C64-Mega-Switcher design files?

From the tebl/C64-Mega-Switcher repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the C64-Mega-Switcher design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which tebl chose for the repository.

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