mmWave Target Tracking - fully customized ESPHome support!

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  • DFRobot SEN0395 ($29)

    • It’s good :+1:
    • Detects static humans (sleeping, etc.)
    • Good luck getting one since Everything Smart Home made a vid.

  • RFBeam K-LD7 ($86)

    • Doesn’t detect static humans for very long.
    • Mainly it’s just great for tracking people’s movement.
    • 2D not 3D

  • RFBeam K-LD2 ($53)

    • A less expensive worse LD7. Enough for some use cases.

  • SeeedStudio 24GHz Human Stationary Presence Module ($20)
    (similar to the 24GHz Fall Detection Module)

    • No max distance setting.
    • Has a very hard time returning to an unoccupied state depending on the environment. I suspect the unconfigurable, huge 16.5m range is the culprit.
    • Actually decent as a “detect-how-much-motion” sensor. Gives a range from 0-100. Someone make a virtual trainer that yells at you to start moving.

  • SeeedStudio 60GHz Fall Detection Pro ($37)

    • It could suffer similar issues as 24GHz since sensors which return a 0 or 1 (unoccupied / occupied) are at the whim of the internal processing algorithm. Same company same algorithms?
    • 60GHz is more accurate on a theoretical level. Has a max distance setting. Uses fmcw technology instead of dopper. These are all promising signs.
    • Not for the faint of heart to be an early adopter. Send me one and I’ll pay with example code :wink:
    • 60GHz does not penetrate walls as much as 24GHz does (good or bad)
    • Shipping from Seeed is expensive. Digikey will get them Aug 20. I might get one in August.

  • SeeedStudio 60GHz Respiratory Heartbeat Sensor ($45)

  • Jorjin MM5D91-00

    • Has an occupancy gpio (High / Low) so if you can get it configured with their software, the setting is saved on the chip and you could then read the gpio with an esp.
    • Based on an Infineon 60Ghz mmWave radar chip which is the same as the SeeedStudio 60GHz Modules. This does not mean the uart protocol is the same nor does it necessarily mean the processing algorithm is the same?
    • Definitely seems workable on paper.
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