LinkHarvestDigest

Show HN: VolAnti – Open-source acoustic detector for fibre-optic FPV drones This project has been a month in the making, and 9 fully functional units will be sent tomorrow to an undisclosed civilian site across the Israel - Lebanon border. All of my findings are shared online to anyone on the globe who could benefit from them, or make their own units. I'm an engineering student at the University of York, originally from Israel, studying in England. I too often have been hearing about tragic cases involving civilians in war zones being chased and attacked by small FPV drones mounted with an explosive. Especially around the north of Israel, Ukraine and Russian. My intentions for this project were clear: create a device small, portable and cheap enough for civilian use, that could drastically change the outcome of a drone infiltration through early alerting. I decided to dedicate a month of my summer to go back to the university labs and to work on this as personal project. These dron...

Show HN: Auto-Rig Web – Zero-click 3D humanoid rigging in a Web Worker https://ift.tt/76vlVUk September 8, 2026 at 11:48PM

Show HN: Zero downtime embedding model upgrades People use embedding models all the time for rag/semantic retrieval. However, when a newer, more desireable model comes out, there is an expensive (both in time and computational) cost of re-embedding every document in the database. However, I figured out an interesting way to forgo that upfront embedding cost. algo: old model/index -> retrieve top-K docs -> score those docs with the new model -> cache/materialize the new embeddings so instead of rebuilding the entire vector store upfront, the old index keeps getting retrieved from, while the new model reranks those candidates. This works surprisingly well for some model pairs, (i tested 63 source-> target migrations on h100s, on upto 1M documents). For example, on a 1M document Natural Questions dataset, native Qwen3-Embedding-8B: 0.6812 nDCG@10 Qwen3-4B -> Qwen3-8B, K=50: 0.6816 Qwen3-0.6B -> Qwen3-8B, K=50: 0.6638 MiniLM -> Qwen3-8B, K=50: 0.6486 (the hard part is ...

Show HN: Browse 27 years of movie ticket stubs in ThreeJS This is one of those projects that's been sitting in the back of my mind for years. I made a ThreeJS UI for browsing (read: re-living) the ticket stubs I've been collecting since I was 9 years old. I was going to create a whole form so that people could share their own collections but landed on just opening up a version you can use to DIY with your agent. That part is here: https://ift.tt/nWk2dIj Enjoy! Notes and feedback welcome and appreciated. September 8, 2026 at 12:32AM

Show HN: Golden hour API and a 3D globe of the best light https://ift.tt/fOdXj8P September 7, 2026 at 05:18AM

Show HN: Lantunnel – a P2P-first private mesh for reaching your LANs https://ift.tt/ATK8ISH September 7, 2026 at 04:47AM