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| Modding the Kodak Reels 8mm Film Digitizer (Firmware Hack) |
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omega New Tinkerer -------- Joined: Jul 29, 2025 Posts: 35 Likes: 13 |
Aug 1, 2025 - #521
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omega New Tinkerer -------- Joined: Jul 29, 2025 Posts: 35 Likes: 13 |
Aug 1, 2025 - #522
Hi,
how do I know what version of the machine I have? Is it A, B or C? I thought it was the first letter of the serial number I have C1725148BK00237. But when I see numbers starting with H, it must be different. Thanks a lot for the answer. |
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ThePhage Tinkerer -------- Joined: Oct 30, 2024 Posts: 41 Likes: 36 |
Aug 1, 2025 - #523
I've had some older film that is warped/cupped to the point where the sprockets are not properly distanced and the pin is having a hard time advancing the film properly, requiring me to manually "pull" the film through and hope that it's able to grab and advance it further. Also, an unrelated intermittent issue with the synchronization of film advancing and image shutter is experienced by many users (causing some stutter/jumpiness/distortion visible in the top area of some frames. 0dan0 was reportedly able to address this in one of the more recent firmware versions. |
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omega New Tinkerer -------- Joined: Jul 29, 2025 Posts: 35 Likes: 13 |
Aug 1, 2025 - #524
Edit I just tried a normal 8mm and it came through fine. No skipping. It looks like a problem with the film. Liked by Umba67 |
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0dan0 Active Tinkerer -------- Joined: Jan 13, 2025 Posts: 324 Likes: 499 |
Aug 1, 2025 - #525
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omega New Tinkerer -------- Joined: Jul 29, 2025 Posts: 35 Likes: 13 |
Aug 2, 2025 - #526
I'm trying color film and there's no skipping. The advance works fine, so the problem must be with the black and white films. They're probably dried up from age. Since I have a lot of super 8mm, I need to figure out how to fix it.
Since the color ones are OK, I'd like to try your firmware. I'm just afraid of killing the machine with the wrong version. I don't know which one I have or how to find out. |
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fishgee Tinkerer -------- Joined: Jan 6, 2025 Posts: 27 Likes: 25 |
Aug 2, 2025 - #527
OdanO's Post #496 has all 3 versions of 6.6 attached for download. Follow the instructions Steve posted at the very bottom of this page (https://mac84.net/8mmlookup/) to the letter. Especially "only use FAT32 formatted SD cards when flashing firmware" Have fun. |
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0dan0 Active Tinkerer -------- Joined: Jan 13, 2025 Posts: 324 Likes: 499 |
Aug 2, 2025 - #528
I think you can rule out type A, these are the oldest, and very unlikely to be sold as new anywhere. My one Type A was still called "Reelz" not "Reels", well until I firmware updated it. I would think most new units are Type C, so I would try type C first, then B. The 8mmlookup should be updated with information from more recent serial numbers.
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Deano New Tinkerer -------- Joined: Jul 24, 2025 Posts: 3 Likes: 1 |
Aug 2, 2025 - #529
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0dan0 Active Tinkerer -------- Joined: Jan 13, 2025 Posts: 324 Likes: 499 |
Aug 2, 2025 - #530
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0dan0 Active Tinkerer -------- Joined: Jan 13, 2025 Posts: 324 Likes: 499 |
Aug 2, 2025 - #531
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omega New Tinkerer -------- Joined: Jul 29, 2025 Posts: 35 Likes: 13 |
Aug 3, 2025 - #532
Hi, I tried the latest firmware version, but neither version works. Both A and B only have colored spots on the display after restart. In version C, the display works as it should, everything can be set, but nothing is saved to a 128GB card formatted in exFAT. The original firmware wrote to it normally.
EDIT I tried reformatting the card to FAT32 and the movies are saved on it. They can't be played, but that could be because the movie is saved to a folder with a different name than in the original firmware. A large card can't normally be reformatted to FAT32. But if anyone has the same problem as me, there is a program exFAT to FAT32 to download that can do it. |
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Peaceman New Tinkerer -------- Joined: Aug 3, 2025 Posts: 1 Likes: 3 |
Aug 3, 2025 - #533
I just spent a couple of hours yesterday to read this entrie thread - what a thrill, how exciting, and what glorious work by 0dan0 and Mac84. Absolutely amazing, and the most kudos for your grit and persistence and making this "doorstopper" device actually useful. An extra shoutout for 0dan0's analytical and coding capabilities. Considering that this was his first firmware RE project, I am blown away even more. Ghidra and symbol-less MIPS assembler are no easy ride, and even things like the memory mapping topology got under control. Wow.
My personal knowledge is more in the hardware, image processing and motion picture chemistry space - while I do occasionally write code, it's of a quality nobody should ever see, and nowhere near the ability to RE firmware. Nevertheless I wanted to add my $0.02 here on the topic, just in case they might be useful for some. I did own a 2nd Gen Wolverine five years ago, and boy, that thing was useless. It eventually lead me to building my own scanner platform (but that's off-topic) - but before that, I gave the device a deep dive and came up with some pragmatic mods, too. You can read more about that in my blog at here. In a nutshell:
Liked by Federico,Umba67and0dan0 |
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Umba67 New Tinkerer -------- Joined: Dec 4, 2024 Posts: 18 Likes: 13 |
Aug 3, 2025 - #534
Hello!
Thank you Mac84 and 0dan0! And all the other participants of this group. Last night I flashed the version 6.6 B released by 0dan0, and I run a comparison test with my previous scanned Super 8 (that dated back to dec 2024 when I first stumbled into this thread). I'm waiting for the lens and gears to mod the scanner, you can watch the first result. Both were scanned at full zoom out, then blown up to fit side by side into a 4k frame. The ver 6.6 is blown up more because of the small portion of interest of the frame. @0dan0 I did three different scans, before I choose the one you see, with Bal +0.5 and Sharpness -1. I need to practice more ... I didn't get how to use the controls. The color correction was done on a hurry (I started yesterday night :) ) some plates are inconsistent with the others, but some are quite good! (in my humble opinion). Not a n easy one with many blurred scenes. From a passionate hobbyist Thank you again! Liked by Deano,0dan0andKai Robinson |
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Deano New Tinkerer -------- Joined: Jul 24, 2025 Posts: 3 Likes: 1 |
Aug 4, 2025 - #535
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Umba67 New Tinkerer -------- Joined: Dec 4, 2024 Posts: 18 Likes: 13 |
Aug 4, 2025 - #536
Hello Deano, you are right.
I didn't explain myself well, sorry. I meant that after flashing the firmware, the sensor with mac84 captures 1920x1440 pixels, while with 0dan0 it captures an area of 3840x2464. Then Mac84 outputs a file with a resolution of 1920x1440, while 0dan0 1600x1200. Original Mac84 capture, Kodak Reels zoom set to full out (no digital zoom) lens 8mm: Original 0dan0 capture, Kodak Reels zoom set to full out (no digital zoom) lens 8mm: I used some black tape to mask the "white" area of the sensor to increase contrast (cit. 0dan0). If I compare the native dimension in Davinci this is the outcome on a 4K plate: So Deano you are right! 0dan0 file has less resolution and it is smaller than Mac84. It is a 3280x2464 downsized to 1600x1200 with a bit rate of 30-35 Mbit/s that doubles the Mac84 17,5 Mbit/s. I need to get closer to the film in order to fill the 3280x2464 unlocked sensor with only the frame of interest, discarding the rest of the frame. The 4K clips by 0dan0 on YouTube show that if you upscale a 1600x1200 clip to 4K, the result looks very good (to me). I have 29 3min rolls and 24 30min rolls of Super 8 shot by my father, I was already satisfied with the outcome I got with Mac84. If I want them scanned from a professional lab (ONE 3min roll in 4 K= 70-100EUR) I'll face an expense that is al lot more than the investment for the Kodak Reels + Lens ecc + my time. |
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Umba67 New Tinkerer -------- Joined: Dec 4, 2024 Posts: 18 Likes: 13 |
Aug 4, 2025 - #537
I have some feedback:
1. to install the 0dan0 6.6 firmware I have to use an 8gb memory card formatted FAT32. The 128 Gb card won't be read 2. to save a clip to the card I need to use the 8Gb card, the 128 Gb (FAT32 or ExFat formatted) is not supported. With Mac84 there is no issue using the 128 Gb card. 3. How to balance color with 0dan0 6.6? I set a +0.5 or 1.0 that has a bluish tint. The TINT command is now controlling Saturation? Thank you
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0dan0 Active Tinkerer -------- Joined: Jan 13, 2025 Posts: 324 Likes: 499 |
Aug 4, 2025 - #538
This is not how resolution works. The sensor has maximum of resolution of 2304x1296 (Datasheet - https://files.niemo.de/aptina_pdfs/AR0330_Data_Sheet.pdf ) the encoder has a maximum resolution of 1920x1440. But the stock firmware (even bit-rate enhanced) only let you view the middle ~600x400 pixels, then scales that up to 1920x1440, or 1728x1276, etc. (not resolution, just blurry pixels.) All the processing is done at 600x400, this is why you don't really see film grain. In my hacks, I took away the processing restriction, and allow you to read and use more of the sensor. It is still a tiny, low res sensor, but I do have it natively running at 1600x1200 stability. The problem is that the lens is wrong, the area of 8mm frame, only shines on the middle 600x400 pixels on the sensor, no matter what firmware. It is a hardware issue. You have to replace the lens to get more resolution, as shown in my demo here:
Liked by eyeidea,CDenhartandUmba67 |
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Umba67 New Tinkerer -------- Joined: Dec 4, 2024 Posts: 18 Likes: 13 |
Aug 4, 2025 - #539
I'm waiting for the 12mm lens + rings to arrive, then I'll post my findings here. I hope that exploring different paths, especially with my diverse background (I know nothing about coding, Arduino, etc.), might be helpful. |
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omega New Tinkerer -------- Joined: Jul 29, 2025 Posts: 35 Likes: 13 |
Aug 6, 2025 - #540
Hi,
my Kodak is probably very bad. Even the color film started to skip. It makes a strange clicking sound when scanning and at that moment the image skips. I'm thinking of returning it, but there is a problem with that. I uploaded modified firmware to it and I can't return it in this state. Could someone who has a backup of the original firmware C from version 2.0 send it to me? Versions A and B probably wouldn't work, because the ones here don't work either. Thank you very much for your help. |
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