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Source channel @githubtrending · Post #15535 · Mar 3
#shell ESP-CSI uses Wi-Fi Channel State Information (CSI) on all ESP32 chips to sense breathing, chewing, walking, or other movements without contact or extra hardware. You get rich data like signal phase and amplitude for smart monitoring, activity detection, positioning, and AI apps, with easy OTA upgrades, BLE help, and examples for quick starts like radar or cloud uploads—saving costs while boosting your IoT projects' accuracy and reliability. https://github.com/espressif/esp-csi
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@kejiqu · Post #4250 · 03/10/2026, 03:06 AM
宇宙是无限的吗？ 观测数据显示宇宙呈现平坦状态，但其真实大小和超出可观测范围的整体形状可能永远无法确定。科学家指出，如同地球表面具有可测量的尺寸，如果地球膨胀，其尺寸会随时间增加。然而，宇宙的真实性质，包括其是否无限，以及超出可观测范围的形状，仍然是未解之谜。目前的技术手段无法确定宇宙的全局几何结构，其真实尺寸和形状可能永远无法被人类完全认知。SciTechDaily 🏷#Universe#Cosmic#Geometry#Observations 📢频道👥群组📝投稿