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Build

Assembling the hardware. The order matters — each step assumes the one before it is done and verified.

  • Sound trigger wiring

    Solder R17, wire GATE → HOST_INT. Everything downstream depends on this trigger path.

  • OPS243 → GPIO UART

    Move the OPS243 off USB. Required before the IWR6843, which needs the bus.

  • IWR6843 angle radar

    Wire, flash, mount, aim, and calibrate. The largest single step.

  • Inclinometer

    Optional. LIS3DH enclosure-level tilt compensation.

  • Battery

    Optional. Geekworm X1202/X1206 UPS with native telemetry.

  • Enclosure & case

    Optional. The printed IARC v3 case.

Before you start

Order everything from the parts list first — some items have long lead times, and a partial build cannot be verified end to end.

You will need a soldering iron for exactly one joint: the R17 gain resistor on the SEN-14262. See sound trigger wiring.