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1. passive temperature NFC tag

   C++ 47 5

2. Offline portable GNSS device based on the ESP32

   C++ 71 16

3. Android app for crowd sourced surveillance camera mapping. See https://vimeo.com/unsurv for the latest demo.

   Java 26 4

4. Solar powered meshtastic node base on the HT-CT62 module

   1

5. 360 degree camera with hardware ML accelerator

   2