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Siel C64 Music keyboard interface CMK-49
Retrofixer Mar 08,2025
SIEL COMMODORE 64 INTERFACER1       1K5 Net resistors Bussed (SIP9)C1       100nF (Any capacitors 100nF work, 5mm footprint)U1       74HC138N (LS series maybe don't work)U2       74HC244NU3       74HC00NCN1     C64 EDGE CONNECTOR 44PIN 2.54 STRAIGHT (TE Connectivity 5530843-4)CN2 16 PIN DIP SOSKET ...
Keyboard Synthesizer Commodore
1251
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C64 Unified Diagnostic Cartridge
Cristaldi Feb 26,2025
The original Dead Test Diagnostic Cartridge is designed to test the C64 and C128/C128D, (C64 Mode), Systems that fail to display video information on Power Up even with the C64 or C128/C128D Diagnostic Assembly installed.The Dead Test is meant only as an extra troubleshooting tool to assist the Technician in repairing Dead PCBs and does not replace the current C64 or C128/C128D Diagnostic Assemblies now being used.The Dead Test is almost completely dedicated to System RAM testing and does no typ...
DIY Commodore
1599
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Commodore 6309 - A new CPU for the Commodore 64
Feb 13,2025
IMPORTANT: This v0.8 board is intended for hw debugging.The final version will be greatly simplified and easier to assemble.This experimental project transplants a Hitachi 6309 CPU instead of the MOS 6510 CPU on a Commodore 64.The main intent is porting NitrOS-9 to the Commodore 64 (and have fun ;-).IMPORTANT NOTE: This is an early prototype, has not been thoroughly tested, and might damage your Commodore 64.So if you want to try this, you do it AT YOUR OWN RISK !!!This project requires replacin...
DIY Commodore Retro
1798
5
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C64 250407 SRAM Adapter
Battaglia Jan 26,2025
This board implements a static RAM replacement for the DRAMs on a C64 with a 250407 motherboard. I wanted to both reduce power consumption, and get a fix for the VSP bug.You will have to socket your DRAM ICs to install this board.You can choose to use SMD or DIP components for the logic and memory ICsOnce the DRAMs are socketed, the board is easy to plug in and removeIf your C64 lacks C203, a capacitor can be fitted on this board without having to further modify your motherboard
Commodore Hardware Retro
3219
10
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PCB TANGRAM PUZZLE
C64iSTANBUL Jan 24,2025
PCB TANGRAM PUZZLE - 七巧板The tangram is a dissection puzzle consisting of seven flat polygons, called tans, which are put together to form shapes. The objective is to replicate a pattern (given only an outline) generally found in a puzzle book using all seven pieces without overlap.https://en.wikipedia.org/wiki/TangramYou'll need a PCB cutter to separate the parts and a fine steel file to trim away any excess.Use this PCB at your own risk !Have funThank you.C64iSTANBUL
tangram pcb tangram chinese tangram
769
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Adapter 9 from 2040
Lunde Jan 13,2025
Considering the imminent release of TheSpectrum from Retro Games Ltd. I started looking into updating the C64 JoyKEY-project, mainly because the Arduino I was using has started to show its age. Thankfully, in the years since then we've had quite a bit of interesting developments in the form of the Raspberry Pi Pico, and subsequently the GP2040CE firmware created for it. If there was ever feature you've that was missing from your favourite arcade controller, then it's already there in some form a...
7th Design Contest-Electronic Project TheA500 TheC64
2229
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Switchless Floppy Drive 8x Multi Floppy Speeder for the Commodore 1541 Disk Drive (V2.2cf/SMD)
Eggen Jan 02,2025
The board expands the Commodore 1541 disk drive with 32 KB SRAM (RAMBoard compatible) and integrates 8x 64KB ROM banks for various DOS systems (Speeders) in a single 512KB ROM. In this version 2.2c, the DOS Kernals can be switched "switchless", i.e., without a physical switch, via DOS commands from the computer. No holes or switches are needed on the casing to switch between DOS/Speeders.In this variant, all ICs are built as SMD components. This enables the operation of the 8x Multi-Speeder 32KB...
Commodore Retro Hardware
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1
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1541-I/1541C Parallel-Adapter - Parallel Cable Set for the Commodore 1541 Disk Drive (SpeedDOS, DolphinDOS) with the C64/C128
Eggen Dec 25,2024
This is the parallel cable adapter for the VIA 6522 in the 1541-I or 1541C disk drive. For standard operation, only one connector for the ribbon cable to the C64/C128 user port adapter is needed. The parallel cable adapter is installed between the VIA 6522 and the PCB in the 1541-I (UC3) or 1541C (U3).This project includes a parallel cable set for the Commodore 1541 disk drives of types 1541-I, 1541C, and 1541-II. The basis of the project comes from [Sven Petersen's](https://github.com/svenpeter...
Commodore Hardware Retro
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1541-I/1541-II Parallel-Adapter (Duo/Slim) - Parallel Cable Set for the Commodore 1541 Disk Drive (SpeedDOS, DolphinDOS) with the C64/C128
Eggen Dec 25,2024
This is the parallel cable adapter for the VIA 6522 in the 1541-I or 1541-II disk drive. For standard operation, only one connector for the ribbon cable to the C64/C128 user port adapter is needed. The second connector is designed for the 8x Multi-Speeder, allowing parallel operation of DolphinDos 2 and DolphinDos 3. The parallel cable adapter is installed between the VIA 6522 and the PCB in the 1541-I (UC3) or 1541-II (U6).This project includes a parallel cable set for the Commodore 1541 disk d...
Commodore Hardware Retro
1542
5
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C64 Userport-Adapter - Parallel Cable Set for the Commodore 1541 Disk Drive (SpeedDOS, DolphinDOS) with the C64/C128
Eggen Dec 25,2024
This is the adapter for the user port of the C64 or C128. The adapter features a reset button and two parallel port connectors for the Commodore 1541 or Commodore 1571 disk drives. If two disk drives are to be operated with parallel cables, it is essential that both drives are powered on for parallel transfer to function correctly. The user port is passed through the PCB 1:1 to the back, allowing additional devices to be connected.This project includes a parallel cable set for the Commodore 1541...
Commodore Hardware Retro
2114
0
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