• U421 from USBMicro, a USB to SPI adapter.
  • +3.3V voltage regulator
  • TSSOP/20 0.65mm surface-mount adapter board from Logical Systems. This I had to solder myself.. and those pins are only 0.65mm apart! It's not so bad, though. With lots of flux and a steady hand, surface tension does most of the work of soldering for you.
  • MAX3002 bi-directional signal voltage converter. Need this since the USB adapter signals at 5V, but the sensor boards need closer to 3V.
  • Micromag SPI 3-axis magnetometer. Easily sensitive enough to use as a 3D digital compass, from SparkFun.
  • Not pictured (and not hooked up yet), a SPI 3-axis 3g accelerometer board, from SparkFun, right here in Boulder.
  • USB cable, going off to my laptop.

SPI Magnetometer

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Little electronics project I'm working on. Personally, I'm not entirely sure where it's going. I thought it would be neat to make a box with a USB interface to a 3-axis accelerometer and a 3-axis magnetometer.

trochej and clemens.duerrschmidt added this photo to their favorites.

  1. no-cost-punk 60 months ago | reply

    OOOH!!!! ME ME ME ME ME! I HAVE A USE FOR IT!

    www.flickr.com/photos/no-coast-punk/2333213810/

    Map that correctly.

  2. mmushovic 36 months ago | reply

    Do you still have this circuit? It's perfect for something we're building at work.

  3. AMagill 36 months ago | reply

    Not this exact circuit, but I do have the device this was prototyping. This wouldn't be too hard to reproduce, though. In fact, I could make a much better version of this with what I know today.

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