Member Since: June 30, 2009

Country: United States

  • Now, when you're soldering a chip with multiple leads, sometimes it works better to use a larger iron and lots of flux.

  • We didn't have the heart to tell them that Cirque du Soleil's Arduino-themed show was cancelled.

  • I think the LynxMotion stuff is made out of laser-cut polycarbonate/Lexan. I don't think it's so much a matter of it being impossible as it is a matter of it creating highly toxic fumes (feel free to correct me if I'm wrong).

  • In hindsight, he should have waited for the epoxy to dry before he tested for leaks.

  • Our most advanced technology in a magical & revolutionary device at an unbelievable price.

  • Actually, if you wanted to attach an older USB hub to a Nokia N800, this would work okay. A lot of them have full-sized B jacks on them. Same goes for some "docking stations" and the like, or older USB hard-disk enclosures.

  • Any plans to update the Koala with the TPS61200 boost converter being used on some of the newer boards?

  • I might be missing something, but is there a way to turn this thing off short of disconnecting the battery? I.e. if I was creating a battery-powered device, would the power regulator continue to operate and drain the battery even if nothing was drawing power through the output terminals?

  • Yep, in fact if you went with a fair bit more DSP processing power, you could do cross-correlation of the signals and filter based on azimuth, for example. An example with data from New Zealand:<br />
    Or another using the USArray deployment in the western US:<br />

  • The issue is partly one of sensitivity -- like Eric-Montreal says above -- and partly one of bandwidth. Accelerometers are nowhere near as sensitive to low-frequency signals as even a mid-band geophone, so you're only going to get the spiky high-frequency portion of the signal.<br />
    <br />
    I'd suggest taking a look on places like used equipment suppliers; try to find a seismograph or geophone with a 1 Hz low-pass (or lower). The output will be a signal you can amplify and measure with an ADC, and the size and weight will be sufficient to keep it a bit more stable. If you want to get really serious, you could talk to GNS science and see if they have anything used that they're looking to get rid of ( They've got offices in Wellington and Dunedin among others.

No public wish lists :(