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LeSonar 2

We're directly selling our ultrasonic sonar development kit, and releasing it under an AGPL license so you can build projects on top of our sensor.

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Specifications

  • 380x TDK Invensense T3902 PDM microphones.
  • Artix-7 A100T FPGA.
  • FT601Q parralel-to-usb bridge tested at up to 200MB/s.
  • 32x 40khz Ultrasonic Piezoelectric emitters
  • 2 free GPIOs

Capabilities

Active sonar

  • Optimized for 40KHz operation.
  • Up to 5°x5° beamwidth.
  • Range up to 8 meters depending on target sonar cross-section.

Passive sonar

  • Can detect a bike air chamber leak at 3 meters.

Software

The sonar comes with two demoes - 2D Slicing camera, that shows the energyscape for a specific distance. - 3D Camera, that shows the reflected energy with a 3d point cloud.

Both examples are made with C99 C, using Raylib and Sokol for real-time 2D/3D visualization.

Attribution

The receiver hardware is based on the open-source CP SoM One

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Ultrasonic phased array sonar

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