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Hitachi HM55B Compass Module from Parallax is now shipping ($29.95) — Parallax Forums

Hitachi HM55B Compass Module from Parallax is now shipping ($29.95)

Ken GraceyKen Gracey Posts: 7,387
edited 2005-05-13 14:56 in BASIC Stamp
Dear Customers,

We have a new product for you today. Details are here:

http://www.parallax.com/detail.asp?product_id=29123

Sincerely,

Ken Gracey
Parallax, Inc.
HM55B Compass Module.gif
76K

Comments

  • ForrestForrest Posts: 1,341
    edited 2005-05-12 00:20
    The application note states the unit is accurate to +/- 1 brad after calibration. What the heck is a brad (other than a short nail)?
  • Jon WilliamsJon Williams Posts: 6,491
    edited 2005-05-12 00:23
    BRAD = Binary Radian, or 1/256 of a circle (about 1.4 degrees).

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    Jon Williams
    Applications Engineer, Parallax
    Dallas, TX· USA
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2005-05-13 14:48
    That resolution is great. Your old unit was just 8 parts of a circle, wasn't it?
    And this unit is so small I couuld put it on the back of a cockroach [noparse][[/noparse]with a battery, too].

    I really need to have a compass and have been avoiding committing. GPS is no good for robots because they really can only get you into the ball park. Then it is up to a blend of compass, gyro, ultrasound, IR, and video to sort out the real details.

    I guess I should make another shopping list for Parallax [noparse][[/noparse]as I need some more sonar and accelerometers to really get navigational]

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    G. Herzog in Taiwan
  • Tom WalkerTom Walker Posts: 509
    edited 2005-05-13 14:56
    ...and until the end of the month, shipping is free on orders of $200 or more...

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    Truly Understand the Fundamentals and the Path will be so much easier...
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