# paceball

Published articles for paceball.

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## We Built a Cricket Speed Gun From a Phone Camera and Got the Physics Wrong

DevFeed: [We Built a Cricket Speed Gun From a Phone Camera and Got the Physics Wrong](<https://devfeed.tech/articles/we-built-a-cricket-speed-gun-from-a-phone-camera-and-got-the-physics-wrong-58020.md>)

Original publisher: [Read original article](<https://hackernoon.com/we-built-a-cricket-speed-gun-from-a-phone-camera-and-got-the-physics-wrong?source=rss>)

Author: AbdulBasit

Published: 2026-09-22T14:03:02Z

Content type: article

Language: en

Sources: [HackerNoon](<https://devfeed.tech/sources/hackernoon.md>)

Topics: [Mobile](<https://devfeed.tech/topics/mobile.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [samsung](<https://devfeed.tech/topics/samsung.md>)

Tags: [android-development](<https://devfeed.tech/tags/android-development.md>), [camera](<https://devfeed.tech/tags/camera.md>), [computer-vision](<https://devfeed.tech/tags/computer-vision.md>), [developers](<https://devfeed.tech/tags/developers.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [mobile-app-development](<https://devfeed.tech/tags/mobile-app-development.md>), [paceball](<https://devfeed.tech/tags/paceball.md>), [phone](<https://devfeed.tech/tags/phone.md>), [react-native-camera](<https://devfeed.tech/tags/react-native-camera.md>), [samsung](<https://devfeed.tech/tags/samsung.md>), [shipaton](<https://devfeed.tech/tags/shipaton.md>), [sports-tech](<https://devfeed.tech/tags/sports-tech.md>), [video-motion-analysis](<https://devfeed.tech/tags/video-motion-analysis.md>)

### AI overview

Two web developers document building Paceball, a mobile app that estimates cricket delivery speed from phone-camera footage. Early testing found that variable frame rates and incorrect physics assumptions made the initial approach unreliable.

### Source excerpt

We built a cricket speed gun from a phone camera. It gave us 110 km/h from a guess, so we made it refuse to answer instead. Here is what that took.