
ATAR
Retrofit AI weed detection for any boom sprayer.
What it does
ATAR retrofits any boom sprayer with AI weed detection — no new machinery needed. Cameras scan at 60fps, edge AI classifies each plant in < 42 ms (offline, no cloud), and only nozzles over weeds fire. Result: up to 80% less herbicide. Works with John Deere, Hardi, Amazone, Kuhn, Case IH and 40+ brands. Installs in 6 hours. From €600/m. 4 pilot spots open for 2026.
Does the same job
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- IMI’m Building a Nerf Dart Missile Defense System [video]2022 · youtube.com · ▲175
I’m building a robot that can track nerf darts and shoot them out of the air. I’ve worked on other projects in robotics and object tracking (perception for self driving cars), but this has a whole different set of challenges. Nerf rival rounds travel at over 100 feet per second and shooting them out of the air requires aiming systems that are precise to less than half the width of a human hair and timing precision of 600 times faster than the blink of an eye. This is the first part of the series of me building the project (and my first video!) so I’d love to hear what you think!

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Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…
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Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!
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- IM
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