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C= 64 Cable Projects

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First post, by bjwil1991

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C= 64 Cable Projects list

A/V cable

8-pin 262 DIN
300 Ohm Resistor (Chroma)
1m (3.28 ft) 5-contact cable
Cut up s-video cable
Cut up RCA cable (audio & composite)
Jumping pin 5 to pin 2 (audio in to gnd for noise reduction)

IEC to Uno2IEC or IEC to IEC

6-pin DIN
3x 100 Ohm 1/8w Resistors
1m (3.28 ft) 5-contact cable
Wiring from the Arduino Uno R3 kit

Getting the rest of the items today since I got the DIN connections from eBay on Saturday (5 Qty per DIN) and this'll be a fun project.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 1 of 7, by Azarien

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bjwil1991 wrote:

300 Ohm Resistor (Chroma)
Jumping pin 5 to pin 2 (audio in to gnd for noise reduction)

Can you elaborate on those? It was some time ago that I did such a cable, but I don't remember using any resistors or bothering with audio in.

Reply 2 of 7, by brostenen

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The C64 av cable is fun to make. Though the SD2IEC, then I went for a ready made one from eBay. It sits directly on the back of the machine, on the ports. And it has a connector, so I can hook up a real floppy drive as well. Really a nice thing and I can highly recommend them.

They are black, has SD2IEC written in the case and they are being sold from spain.

EDIT:
Now the seller is producing them in white. Not cheap, nor expensive. Just right for a brand new product like that.

https://www.ebay.com/itm/Commodore-64-VIC20-1 … 226?_mwBanner=1

Don't eat stuff off a 15 year old never cleaned cpu cooler.
Those cakes make you sick....

My blog: http://to9xct.blogspot.dk
My YouTube: https://www.youtube.com/user/brostenen

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Reply 3 of 7, by bjwil1991

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Azarien wrote:
bjwil1991 wrote:

300 Ohm Resistor (Chroma)
Jumping pin 5 to pin 2 (audio in to gnd for noise reduction)

Can you elaborate on those? It was some time ago that I did such a cable, but I don't remember using any resistors or bothering with audio in.

The resistor is for modern LCD displays (monitors, TV sets, etc) that can be too bright on the Chroma (Color) signal, and jumping pin 5 (audio in) to pin 2 (ground) makes the noise reduce since it can be too noisy.

brostenen wrote:

The C64 av cable is fun to make.

I did make the cable to some success, except I have to fiddle with the cable to get it to work (I didn't put the wiring in the open slots in some spots), and the audio out doesn't work since I didn't put the wiring in the open holes for the pins. Luckily, I have plenty, but, I'm planning on removing the wiring using my desoldering iron + pump, put flux on the wiring, and put solder on the exposed wire for the exact pins. Pin 6 (Chroma) is soldered in correctly since I added a resistor to it to make the picture less bright since the chroma signal is too strong for TVs or monitors that aren't the Commodore brand.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 4 of 7, by Azarien

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bjwil1991 wrote:

The resistor is for modern LCD displays (monitors, TV sets, etc) that can be too bright on the Chroma (Color) signal, and jumping pin 5 (audio in) to pin 2 (ground) makes the noise reduce since it can be too noisy.

Ah, ok. When I connected my C64 to PC's video-in card (VC100 XP) and used a CRT monitor I didn't notice any chroma problems.

Last edited by Azarien on 2018-03-07, 16:02. Edited 1 time in total.

Reply 5 of 7, by bjwil1991

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I'm using a Sony PVM-9L1 that has s-video and audio, but broken composite (BNC). Going to make a special cable for that one as well.

Edit: rebuilt the cable again, but it needs more work (so close, yet so far). Still have to fiddle with the cable, but on the plus side, the audio works, and I have jailbars on my display, so my plan is to just solder the RCA and s-video cables directly to the pins on the DIN connector.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 6 of 7, by bjwil1991

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Made a 100% functional A/V cable with noise reduction and clearer S-video (300 Ohm resistor soldered onto Pin 6) and composite signal for my C64 with "stereo" audio as well. New video: https://www.youtube.com/watch?v=Rjck5SRsKIk and I have to say, I'm proud of myself for getting the cable to function thanks to bloggers and advise from people on forums for both the DIY A/V cable and testing the SID chip. Going to use my USB Dazzle video capture card to capture footage from the C64 and posting it on YouTube. Next thing I'm going to make is going to be an IEC to Arduino Uno R3 with 3x 100 Ohm 1/8W resistors and make the 1541 emulation for games. If there's a way to make a cartridge version, much like the cartridge style floppy diskette drive for the Commodore Plus/4 and 16 (and 116) for faster load times, I'd be happy since IEC transfer rates are low (using a FastLoad cartridge + JiffyDOS in the near future would suffice).

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 7 of 7, by brostenen

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bjwil1991 wrote:

Made a 100% functional A/V cable with noise reduction and clearer S-video (300 Ohm resistor soldered onto Pin 6) and composite signal for my C64 with "stereo" audio as well. New video: https://www.youtube.com/watch?v=Rjck5SRsKIk and I have to say, I'm proud of myself for getting the cable to function thanks to bloggers and advise from people on forums for both the DIY A/V cable and testing the SID chip. Going to use my USB Dazzle video capture card to capture footage from the C64 and posting it on YouTube. Next thing I'm going to make is going to be an IEC to Arduino Uno R3 with 3x 100 Ohm 1/8W resistors and make the 1541 emulation for games. If there's a way to make a cartridge version, much like the cartridge style floppy diskette drive for the Commodore Plus/4 and 16 (and 116) for faster load times, I'd be happy since IEC transfer rates are low (using a FastLoad cartridge + JiffyDOS in the near future would suffice).

Congrats... That is a good result. Kudos man'...
Waiting for my LumaFix64. Hopefully it will arrive within the next week. It will be needed, as I am in the process of setting up an LCD tv for both of my Amiga's and my C64. It will be used for DVD and/or Blueray playback as well. Plus it has VGA input. For the Amiga's I am going to use the two Scart input that are on the TV, and finally, I have Component for the best Playstation2 signal quality.

The setup is for both me and my son.

Regarding C64 Storage. Then why go through all that hazzle of using an arduino? On eBay you can buy various digital replacements with flash technology and or SD card. For cartdridge, you can get an easyflash. Floppy can be replaced with an SD2IEC and the Datasette can be replaced with an MP32C64 in combination with an smartphone.

EDIT: (links)

https://www.ebay.com/itm/MP32C64-COMMODORE-Da … UYAAOSwH2daf0p8

https://www.ebay.com/itm/Commodore-64-VIC20-1 … 08AAOSwURxanpP9

https://www.ebay.com/itm/EasyFlash-X-C64-Prog … hQAAOSw9qJaZjKd

Finally... There is a modern fastloader, that are build to be compatible with SD2IEC.
https://www.ebay.com/itm/Epyx-Fastload-RELOAD … VMAAOSwBt5ZGiS0

Don't eat stuff off a 15 year old never cleaned cpu cooler.
Those cakes make you sick....

My blog: http://to9xct.blogspot.dk
My YouTube: https://www.youtube.com/user/brostenen

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