Finally true, Full-HD HDMI for the Commodore 64

After a year of hard work I finally created the definitive HDMI solution for the C64, with Full-HD video output and stereo audio over Micro-HDMI.

HD-64 store page:

Blue-64 store page:

DC-64 store page:

[sideprojectslab]

Thank you all for your interest, the first batch has already shipped to customers, and the second batch of 240 units will be available in the second half of March 2025.

[Mambroz]

As a beta tester I have been using it for some weeks and it really is a great piece of hardware, hat off to SPL (always very supportive and willing to constantly improve his product). Never had such a video quality on a real C64! I am so happy to be able to keep my old machines working of modern Oled 4K Monitor and TV!

[Shockwav]

Major props for releasing the full gerbers - with the C64 scene being strongly commercialized that's something I didn't fully expect.

[StatMatsVidz]

This looks very impressive, great work! It's a very tidy solution, which could indeed be the final and best way to achieve Full HD video output along with audio from a C64. :)

[homerghost]

Tremendous work! Look forward to picking one up

[Vermilicious]

Something for Adrian Black to take a look at, I reckon!

[doktor]

Wow, that sounds great!
I think I will do an in depth test on my channel.
Thank you for this fantastic project!
Greetings, Doc64!

[oortcloud]

What a fantastically well designed replacement. No solder (other than desoldering the old RF modulator), just works.

[TheRealLizardKing]

Amazing project, congratulations! It must have felt amazing when everything fell into place. Keep it up!

[cappy]

This is just brilliant, what an amazing accomplishment

[datriaxsondor]

Gotta say, that is quite nice. Always great to see improvements on digital output from retro systems. Very nice work there, bud. 🍻

[retro_noix]

Great work! Will buy it soon when it is available!

[MagoMakes]

Awesome sauce, dude! Great to see 64 dev still alive and kicking in 2025

[ZeaLitY]

Amazing. Feels more true to the hardware than console "bypasses", since the VIC-II is still doing all the heavy lifting. Will be excited to check out.

[steffenschlette]

Its a great product for people like me who dislike external conversion boxes. Yes, the C64 never looked that sharp 40 years ago but if you prefer the blurry image just dont use this PCB (or take of your glasses...;-) )
Some possible improvements in the manual:

The process of desoldering and removing the old HF Modulator should be covert in the manual from my point of view, this was the most difficult task.

I'm also not clear if I have to add a heatsink to the VIC because the original housing which worked as a heatsink doesn't fit anymore and there was no heatsink in the box.

There were two flat ribbon-cables attached to the VIC "in-between part". I guess one is a spare part which the manual doesn't mention. I realized it after plugging in the VIC and had to remove it one more time.

[lowpolysaurus]

Woarh! That is so cool! Looking forward to grab one of those!

[Mohammedreal]

Here's your 1k like since this is fantastic product for the C64 users!

[elijahvincent]

Average Retro Enthusiast: "This thing will never work on modern HD/4k/8k televisions."
(Modification gets installed)
Commodore 64 from 1982, casually spitting out an HDMI signal: "Am I a joke to you?"

[Mambroz]

Awesome work! You made a dream come true!

[xrffi]

🤩 I definitely need one of these. N1ce Job!