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Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
255•isitcontent•18h ago•27 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
355•vecti•20h ago•161 comments

Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
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Show HN: If you lose your memory, how to regain access to your computer?

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328•eljojo•21h ago•198 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

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79•phreda4•18h ago•14 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

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Show HN: MCP App to play backgammon with your LLM

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Show HN: XAPIs.dev – Twitter API Alternative at 90% Lower Cost

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Show HN: I'm 75, building an OSS Virtual Protest Protocol for digital activism

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Show HN: I built Divvy to split restaurant bills from a photo

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Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

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Show HN: Slack CLI for Agents

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50•nwparker•1d ago•11 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
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Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
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Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

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Show HN: I Hacked My Family's Meal Planning with an App

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Show HN: I built a free UCP checker – see if AI agents can find your store

https://ucphub.ai/ucp-store-check/
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Show HN: Compile-Time Vibe Coding

https://github.com/Michael-JB/vibecode
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Show HN: Slop News – HN front page now, but it's all slop

https://dosaygo-studio.github.io/hn-front-page-2035/slop-news
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Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
173•vkazanov•2d ago•49 comments

Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

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Show HN: Daily-updated database of malicious browser extensions

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Show HN: Horizons – OSS agent execution engine

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Show HN: Local task classifier and dispatcher on RTX 3080

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Show HN: Fitspire – a simple 5-minute workout app for busy people (iOS)

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Show HN: I built a RAG engine to search Singaporean laws

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Show HN: A password system with no database, no sync, and nothing to breach

https://bastion-enclave.vercel.app
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Show HN: GitClaw – An AI assistant that runs in GitHub Actions

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Show HN: Craftplan – I built my wife a production management tool for her bakery

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568•deofoo•5d ago•166 comments
Open in hackernews

Show HN: Fun sketch – Bring your sketches to life

https://funsketch.kigun.org/
15•mishu2•1mo ago
Hello HN,

I created a simple website which lets children (of all ages) sketch something and then animate it using AI. It's a small hobby project because I wanted to see what all the hype is about.

No account required (but because the sketch app allows image uploads and we all know we can't have nice things on the Internet, I will be moderating the submissions before showing them on the front page).

Stack: Excalidraw, Django, Postgres, Redis for caching, ComfyUI for the image to video workflow (Wan 2.2 14B I2V).

Let me know what you think. Merry Christmas!

Comments

forgingahead•1mo ago
Nice work! What hardware are you running ComfyUI on, specifically the Wan2.2 workflow? It must be expensive having a GPU running for a hobby project like this?
mishu2•1mo ago
Thank you. I'm running it locally on a 4090 (24 GB).

I was running into OOM issues with Wan 2.2 before, but I found the latest version of ComfyUI can now run it (using about 17 GB of VRAM for what I assume is a quantized model?).

fouc•1mo ago
Pretty good, I've noticed the animation tends to veer off / hallucinate quite a lot near the end. It is clear that the model is not maintaining any awareness of the first image. I wonder if there's a way to keep the original model in the context, or add original image back in at the half way mark.
VierScar•1mo ago
Could do something funky like convert it to grayscale, add a 4th "colour" channel and put the grayscale image it that
mishu2•1mo ago
I'm actually trying to reduce the 'funkyness', initially the idea was to start from a child's sketch and bring it to life (so kids can safely use it as part of an exhibit at an art festival) :)

There's a world of possibilities though, I hadn't even thought of combining color channels.

fouc•1mo ago
I think they were suggesting that it might be possible to inject the initial sketch into every image/frame such that the model will see it but not the end user. Like a form of steganography which might potentially improve the ability of the model to match the original style of the sketch.
mishu2•1mo ago
Thank you. I've noticed that too, and also that it has a tendency to introduce garbled text when not given a prompt (or a short one).

This is using the default parameters for the ComfyUI workflow (including a negative prompt written in Chinese), so there is a lot of room for adjustments.

fouc•1mo ago
Oh I was wondering why some of the hallucinations introduced Chinese text/visuals, I'm guessing that might be due to the negative prompt.
mishu2•1mo ago
I think the main reason is that the model has a lot of training material with Chinese text in it (I'm assuming, since the research group who released it is from China), but having the negative prompt in Chinese might also play a role.

What I've found interesting so far is that sometimes the image plays a big part in the final video, but other times it gets discarded almost immediately after the first few frames. It really depends on the prompt, so prompt engineering is (at least for this model) even more important than I expected. I'm now thinking of adding a 'system' positive prompt and appending the user prompt to it.

fouc•1mo ago
Would be interesting to see how much a good "system"/server-side prompt could improve things. I noticed some animations kept the same sketch style even without specifying that in the prompt.
mishu2•1mo ago
Thank you everyone for taking a look. The website had around 1,200 visitors and received over 90 sketches over the past 24 hours, and I'm happy to say I could approve almost all of them (all except 2 'rocket' sketches which were starting to look a bit dubious, but all in good fun).

The results look very interesting to me, and I think as a next step I will look into adjusting the prompts (both positive and negative). On the one hand, I'd like to keep the sketch/drawing look rather than going full photorealism as some of the videos do, on the other hand I don't want to restrict the users' creativity too much.

I plan to simplify this further and optimize it for tablets. Some friends said they'd like to have their kids try it out it and I like the idea, as by having to sketch it keeps the user in a more active role.

Please let me know if you have any other suggestions.