Tagged: troubleshooting

Every guide, note, and policy on YouDuck tagged「troubleshooting」.

• Dev board cheat sheet

  The commands that only make sense on a dev board, and the restart traps that make a fix look installed and inert.

• robotctl health

  Hardware and software in one report, exiting non-zero when the robot is unhealthy.

• robotctl monitor

  Live comparison of what was requested against what was applied, with the reason when they differ.

• robotctl version

  Reports what each daemon is running against what is installed, and warns when they disagree.

• deadman: why there is no stop button

  A timeout that zeroes velocity when no fresh intent arrives. It is what stops the robot when the pad process dies.

• Projected gravity: how the robot knows it fell

  The only IMU quantity on the state stream. Upright is about [0, 0, -1], and the fall verdict is drawn from it.

• Gamepad bonds, then drops repeatedly with PIN or Key Missing (0x06)

  This error is usually not broken hardware. It is --weird-ble applied to a board that only needed btd paused.