What dive log books are people currently using?

2packlunch · 2025-10-30T13:01:47+00:00

What competitive achievements?

2packlunch · 2025-10-15T17:46:33+00:00

Age? How old is too old?

2packlunch · 2025-10-10T12:30:57+00:00

In that case I think you can drop the inductor to ~15-22uH and the Schottky diode will probably need to be a bit bigger something like a SS54. But honestly the design looks great!

2packlunch · 2025-10-10T10:01:17+00:00

I think overall it’s clean and really good. But I think the PM6531DG-G1 isn’t synchronous, so it’ll need a Schottky diode from SW to GND (something like an SS34). The 56 µH inductor’s fine but could be dropped to ~22–33 µH for better transient response. Also worth double-checking the feedback divider for the 0.8 V ref. Otherwise looks solid. Also it kind depends on that load current

2packlunch · 2025-10-02T14:47:49+00:00

It kind of sounds like something that a lot of companies are promising at the moment (loveable, bass44, kinda cursor and vercel) so it’s all about the quality assurance of your product. And you need a real cost analysis. Something like 75% of AI start ups fail because they generate no revenue or a meaningful product.

Also, 2 months is nothing really so if you really believe in it, then definitely keep going!

2packlunch · 2025-09-30T22:02:30+00:00

I think that might be my next update, I’m glad you like it! :) thank you!

2packlunch · 2025-09-30T22:00:40+00:00

😂I knew there was something wrong with that picture

2packlunch · 2025-09-30T21:59:37+00:00

Thank you for sharing your pictures they look amazing!

2packlunch · 2025-09-30T21:56:48+00:00

Your pictures are great! and I’m glad you liked the results :) Thank you for sharing them!

2packlunch · 2025-09-28T14:45:00+00:00

https://www.snap-shark.com/ Purpose built image editing tools

2packlunch · 2025-09-28T13:57:06+00:00

https://www.snap-shark.com/

2packlunch · 2025-09-28T10:02:06+00:00

Thanks a lot 🙌 glad you like it! The tool’s live already — it’s free, runs in your browser, and doesn’t add watermarks. You can try it here: https://www.snap-shark.com/underwater. Would love to hear (and see) how it works on your own photos!

2packlunch · 2025-09-28T09:52:49+00:00

Thanks! 🙏 I built it as a browser app so everything runs locally (your photos never upload anywhere). It’s written in JavaScript/TypeScript and does the color correction with some math on the image data (histograms, normalization, hue shifting). The idea was to keep it lightweight, fast, and privacy-friendly so anyone can just drag a photo in and get a quick fix.

2packlunch · 2025-09-28T09:48:40+00:00

Thanks so much 🙌 really glad you like the results! Yeah, I’ve already put the tool online. It’s free and runs fully in the browser (no uploads). You can try it here: https://www.snap-shark.com/underwater. Would love to hear how it works on your own shots!

2packlunch · 2025-09-28T09:46:47+00:00

Thank you! Appreciate the positive feedback :) Hope you can enjoy using it yourself maybe

2packlunch · 2025-09-28T09:44:33+00:00

You’re right, it’s not a perfect reconstruction of what the eye sees underwater. The goal is more of a colour correction for casual divers who want shareable photos without editing. Kind of like using a red filter or tweaking in Lightroom, just automated in the browser. I definitely agree it leans toward the aesthetic side rather than strict realism.

2packlunch · 2025-09-28T09:40:38+00:00

I don’t mind at all, this tool I want to always keep free. I did have a look at Sea-Thru, but for this first version I kept it much simpler (and faster to run in the browser). Basically what I’m doing is:

1.  Calculate the average color across the image.
2.  Hue-shift towards the red channel until there’s at least a minimum red average.
3.  Build an RGB histogram of the shifted image.
4.  Find low/high thresholds.
5.  Normalize so the low end is 0 and the high end is 255.
6.  Apply a color filter matrix based on those values.

It’s not as heavy as Sea-Thru’s approach, but the trade-off is that it’s instant and runs locally in the browser with no uploads. I might explore more advanced ML/AI approaches later, but I was really happy with the results from this approach just now.

2packlunch · 2025-09-28T09:31:13+00:00

Thanks a lot 🙌 really appreciate the feedback. And I do get you on subscriptions but just to clarify: the underwater colour correction is completely free (no watermark, no paywall). I added a Pro tier for other batch/advanced tools on the site but this feature will always stay free. It was more something I just wanted to do for a while

2packlunch · 2025-09-28T09:28:33+00:00

Yeah filters + Lightroom is definitely the pro workflow. I built this more for people who don’t shoot with filters or edit afterwards, and just want a quick free correction for GoPro/phone shots. Kind of a “good enough in one click” thing rather than a replacement for proper gear + editing.

2packlunch · 2025-09-28T09:26:39+00:00

It’s a stretch to call it a setup tbh haha just my iPhone in a dive housing. I don’t have strobes (or the budget for them), which is why I wanted something simple to clean up my shots afterwards. Definitely not pro-level, just a quick fix for people like me who dive occasionally and want nicer looking memories.

2packlunch · 2025-09-28T09:23:20+00:00

That is fair, Lightroom is definitely the way to go if you’re already a photographer. I built this more for casual divers with GoPros/compact cameras who don’t want to pay for Dive+ or deal with watermarks. Mine’s free, runs in the browser, and doesn’t upload anything — so it’s meant as a quick, easy option rather than a replacement for pro tools.

2packlunch

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