frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

Open in hackernews

Show HN: I built a photography weather alert system

https://photosignal.app/
2•ameon•4h ago
hi HN,

I'm a landscape photographer by heart and a software developer by trade. I build a web app for automating alerts for photography weather.

It is meant to solve the following issues I (and probably others) had: - the need to check multiple weather apps multiple times a day - keeping an eye out for some long range conditions like full moon or moon + azimuth - combining several conditions into triggers - notifications/reminders for those triggers

At first, I built a POC on my wordpress site. It was useful but hard to maintain, so I built a new one from scratch using C#, EF Core, Postgres, vanilla html/css/js.

Current functionality: - tracks locations the user saves, updates forecasts - allows to create alerts of two types: - simple conditions like high clouds > X, low clouds < Y, timing window = around sunrise - smart checks like fog or frost prediction, rain clearing, moonrise at sunset, open horizon - some spatial cloud calculations - moon table (up to 365 days ahead) for long range planning

There are some existing apps but I took a different approach. I didn't like the "magic scores" or "awesomeness certainty". Instead, it either triggers or it doesn't and gives you the snapshot.

I launched MVP several weeks ago so it is still WIP. I'd appreciate any feedback - UX, usefulness, etc.

PhotoSignal is freemium (1 location is free). But for HN, I'm giving a temp trial for all features and more locations.

Invite code: HNINVITE

Enter the code during registration. The code is active until July 15 and gives 14 days of access after account activation. After that, the account goes back to the free plan (1 location). Signup and email verification are required because it stores locations and sends notifications.

Show HN: Searchable directory of 22k+ products from worker-owned co-ops

https://www.workerowned.info/
295•IESAI_ski•8h ago•62 comments

Show HN: Unobin compiles Infrastructure as Code to one binary

https://cloudboss.co/docs/unobin
7•joseph•3d ago•1 comments

Show HN: Salt – a systems language with Z3 theorem proving in the compiler

https://salt-lang.dev
30•bneb-dev•11h ago•14 comments

Show HN: GolemUI – Declarative Form Engine

https://golemui.com
37•wtfdeveloper•13h ago•55 comments

Show HN: Curvytron 2, I rewrote my browser party game, 10 years later

https://curvytron2.com/
10•tom32i•1d ago•3 comments

Show HN: Cyclearchive.com – search vintage cycling magazines

https://cyclearchive.com/search/
9•alastairr•4d ago•2 comments

Show HN: QR code renderer in a TrueType font

https://qr.jim.sh/
74•foodevl•4d ago•12 comments

Show HN: Pglayers – PostgreSQL extensions as stackable Docker layers

https://github.com/pglayers/pglayers
33•iemejia•12h ago•4 comments

Show HN: Shark Tank but you pitch your idea to indie hackers

https://indiesharktank.vercel.app/
4•roozka10•6h ago•0 comments

Show HN: Forgejo Appliance, a private Git server based on OrbStack and Tailscale

https://github.com/highpost/forgejo-appliance
6•highpost•6h ago•1 comments

Show HN: PMB – local memory for coding agents that shows if it is used

https://pmbai.dev
22•oleksiibond•2d ago•7 comments

Show HN: GONK – Lightweight Edge-Native API Gateway in Go

https://github.com/JustVugg/gonk
3•vforno•6h ago•0 comments

Show HN: Classify mechanical faults using Contrastive Language-Audio Pretraining

https://github.com/adam-s/car-diagnosis
8•dataviz1000•11h ago•0 comments

Show HN: I built a photography weather alert system

https://photosignal.app/
2•ameon•4h ago•0 comments

Show HN: Morph Reflexes – Multi-head classifiers for agent traces

13•bhaktatejas922•1d ago•2 comments

Show HN: My 13-year-old built an ant colony tracker

https://formicarium.es
72•abelgvidal•1d ago•51 comments

Show HN: Toolnexus for Python – MCP, agent skills,a2a for any LLM

https://pypi.org/project/toolnexus/
2•muthuishere•5h ago•0 comments

Show HN: Banto – Turn any topic into a live game room in minutes

https://banto.tv
2•douglaspham•5h ago•0 comments

Show HN: HackerNows – Native iOS HN Client

https://hackernows.app/
27•maguszin•18h ago•54 comments

Show HN: Z-Jail – A 130 KB Linux sandbox-C99 with 7 defense layers and zero deps

https://github.com/Division-36/Z-Jail/
20•Zierax•9h ago•23 comments

Show HN: Simulate what AI agents do to an engineering org (no signup)

https://www.orgonaut.co/tools/agentic-reorg-simulator/
2•orgonaut•6h ago•0 comments

Show HN: Reminal – A zero-config SSH alternative that's also mobile friendly

https://github.com/harshalgajjar/reminal
11•harshalgajjar•14h ago•2 comments

Show HN: Moxie – an open-source money agent that can't act without your consent

https://github.com/JacobBrooke1/moxie
2•JacobBrooke24•7h ago•0 comments

Show HN: LIBR tracing with source ledger rows and byte-exact PDF verification

https://exitprotocols.com/engineering/libr-state-machine/
4•cd_mkdir•10h ago•2 comments

Show HN: CLI that helps AI agents avoid vulnerable dependencies

https://github.com/clidey/deptrust
3•modelorona•8h ago•0 comments

Show HN: a Rust OS kernel built for LLM inference

https://github.com/Kanchisaw03/axiom
3•Kanchisaw•10h ago•0 comments

Show HN: Nat traversal using ICMP Destination Unreachable packets

https://github.com/hajoon22/icmp-nat-traversal
4•hajoon22•15h ago•2 comments

Show HN: C++, Java and C# light-weight-logger

https://github.com/PenguineDavid/light-weight-logger
12•PenguineDavid•1d ago•0 comments

Show HN: Open-source sandbox for your product team

13•spacspade•11h ago•12 comments

Show HN: Open-Source Interview Platform

https://github.com/CoderScreen/coderscreen
6•rogutkuba•11h ago•0 comments