![I wasn't completely happy about trackballs on market. So I 3D printed and build my own. 34mm ball, press button and roll ball to scroll. Easy to configure faster and slower tracking. I wasn't completely happy about trackballs on market. So I 3D printed and build my own. 34mm ball, press button and roll ball to scroll. Easy to configure faster and slower tracking.](https://i.redd.it/3r2b0oyu4kv51.jpg)
I wasn't completely happy about trackballs on market. So I 3D printed and build my own. 34mm ball, press button and roll ball to scroll. Easy to configure faster and slower tracking.
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J. Imaging | Free Full-Text | 3D Pose Estimation and Tracking in Handball Actions Using a Monocular Camera
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