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Chronos Tilt To Tello Yaw Mapping

Trying to fly a DJI Tello hands-free using wrist tilt from a TI eZ430-Chronos watch in ARC. Hardware-wise: Windows laptop on the Tello WiFi, DJI Tello Movement Panel added (video/arrow keys work fine), eZ430-Chronos Wrist Watch skill connected via the TI USB dongle (X/Y values stream in the skill). I also added Soundboard (PC) to beep when I cross a tilt threshold. I wrote a JavaScript script that polls the watch axes and sends Movement commands; it flies, but it’s jerky and my X-tilt results in lateral strafe, not yaw. Occasionally Forward() seems ignored unless I send Stop() first. Here’s the gist of what I’m doing:

while (true) {
  var x = getVar("$chronos_x");
  var y = getVar("$chronos_y");
  // deadband + simple smoothing
  var dead = 12;
  var px = getVar("$px") || 0; var py = getVar("$py") || 0;
  x = px + 0.3*(x - px); y = py + 0.3*(y - py);
  setVar("$px", x); setVar("$py", y);
  if (Math.abs(y) > dead) { y>0 ? Movement.Forward(y) : Movement.Reverse(-y); }
  else if (Math.abs(x) > dead) { x>0 ? Movement.Right(x) : Movement.Left(-x); }
  else { Movement.Stop(); }
  Sleep(60);
}
  • I’d prefer X = yaw (cw/ccw) and Y = forward/reverse. I tried ControlCommand("DJI Tello Movement Panel", "cw 10")/"ccw 10", but that seems like one-shot degrees, not a rate; Movement.TurnLeft/Right also looks like it maps to strafe for Tello. Is there a way to set a continuous yaw rate via ControlCommand or the Movement API, and any best practice to throttle updates so I don’t flood the Tello while keeping things smooth, plus does triggering Soundboard (PC) from the same loop block or delay movement commands?


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Program the DJI Tello in Synthiam ARC for computer vision tracking and movement using JavaScript, Python, EZ-Script, C++, or .NET.
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