C64-RF-Modulator with S-Video Mod

This is a project of a modulator replacement based on an analog c0pperdragon module. It was adjusted in size to the Commodore C64C motherboard and extended with S-Video and Strereo Audio outputs.

Changelog:

1.2

• internal audio route to left and/or right channel
• ferrite beads to suppresses high-frequency electronic noise
• silkscreen layer with descriptions of all outputs and elements
• 3D models for a nice rendering
• project cleaned up and migrated to KiCad 6.0
• interactive BOM

1.1

• prototype fixes

1.0

• PCB size adjusted to C64C motherboards (ASSY No.250469)
• S-Video connector added (mini-DIN 4)
• added standard stereo audio mini-jack 3.5mm output

Bill of materials:

Final revision:

• all jumpers removed: audio output from an external source (e.g. MixSID)
• all jumpers on: mono signal from the motherboard connected to the left and right channels

Prototype images:

The board connected to SixtyClone. Image from S-Video output:

The board can be soldered with pins to the motherboard. Then the S-Video and Audio outputs will be at the level of the corresponding openings in the housing.

Links:

• c0pperdragon analog module: https://github.com/c0pperdragon/C64-Video-Enhancement/tree/master/analog_only
• order PCBs directly from PCBWay: https://www.pcbway.com/project/shareproject/Commodore_C64C_modulator_replacement_0f6cacf9.html