XMAS BAY, XMAS GOLF 4 U, DEATH BY MARCY 1

XMAS BAY 4 UHad the best weather ever on an XMas. Totally clear, no wind & warm inland.Being the only day you can traverse the MacArthur maze in 1 day, took some snaps above Emeryville.

Moon over Berkeley.

Don't think we've ever seen such a flat calm. Like a millpond. It will make it harder to see the bergs.Finally the movie. Whenever you stop flogging GooTube with your family XMas videos, you'll get a transcoded flight movie.Product links in this post:Professional image stabilization software: http://heroinewarrior.com/Professional UAV: http://vicacopter.com/XMAS GOLF 4 USince no-one plays golf on XMas, had a chance to use the golf course for what it was intended for: flying. That's us in our favorite flight test range.

DEATH BY MARCY 1The Marcy 1 boards are killing us. Mainly everything except the ESC is done from scratch on 1 chip to minimize weight & not commercially sourced. You have to make the radio, the position sensor, the PWM generator, the AHRS, the camera, all from scratch.The radio library must be ported from its successful test harness to the flight hardware. Discovered the SPI pins need to be set to the right modes just to get an SPI interrupt.Next, the USB library which served us well through Vika 1 stopped working on both the Marcy 1 ground station & a new Vika 1 ground station using a crystal.

Finally swapped the crystal for a tried & true oscillator & it worked. So USB works with full 48Mhz oscillators but not 12Mhz crystals + 4x PLL. Everything's leading to the traces not being symmetric & somehow causing a lopsided oscillation or maybe an unstable oscillation. The capacitors are exactly symmetric on a commercial board.

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Comments

  • The blog post was on http://www.rcgroups.com/forums/showthread.php?t=1103279. It's very difficult soldering so consider it entertainment.
  • Admin
    jack , i know that but don't remember seeing the camera itself. ( make and model?) and how the stills are triggered?
  • This is not a commercial RC setup.
  • Our day job DSL is too slow to find it. Can you look through the blog for the camera photos?
  • Admin
    Hey Jack, Some of the best aerial shots :), beautiful video ,what is your camera and tx setup. I think you mentioned it some were but could not find it :( .
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