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ArduIMU Crawler

Posted by James Cann on November 28, 2010 at 9:30pm

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It's getting cold and I'm limited by space to fly and money to repair crashes, so I'm going to feed all my toy-wants by starting off with an AGV, and using the knowledge and experience to make liftoff next spring smoother than would otherwise be.
I already tried using a Traxxas Rustler, but keeping control at low speeds and preventing motor overheats was an issue, so...browse....browse...browse....ah-ha!

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What better vehicle to accidently go off-roading with at low speeds than a rock-crawler?! :-)

Kit form - No electronics - $150

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Basic crawler ESC and Motor installed: $130-ish


What I had on hand: Arduino Nano V3 and breakout board

Purpose: Main Processing

Servo Control

IR Distance measurement using a Sharp GP2D15 on a pan/tilt


What I bought: ArduIMU+ V2 Flat, and HMC5843 - Triple Axis Magnetometer

Purpose: Rollover warning, impact sensing, heading input, turn-rate input, future GPS


The CreepyAGV V1.0



Tags: agv, creepyagv
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Comments

  • James Cann November 30, 2010 at 8:33am
    In industrial variable speed drives, yes. With RC stuff, not yet.
  • James Cann November 30, 2010 at 5:54am
    Re: Static... I actually hadn't thought about that. So far, it hasn't been an issue, but the shielding from the motor/ESC noise might be a good preventative measure as well.

    No camera or wireless yet. The camera will come eventually, but the wireless is coming soon so that I can also do remote programming, rather than worrying about it tripping on its USB shoelaces, and ripping things that shouldn't be ripped.
    well.no
  • GR0B November 30, 2010 at 1:55am
    Does it have a camera? or a wireless link?
  • James Cann November 29, 2010 at 7:17pm
    "SnapWare" from Canadian Tire
  • David November 29, 2010 at 6:58pm
    Kind of random, but what is the name brand of the "tupperware" that you used for the enclosure?
  • James Cann November 29, 2010 at 5:09am
    Crawlers are geared high for torque, so its top speed right now is less than a regular walking speed.
    The motor is either a 50-turn or 55-turn, running on a 6-cell NiMH pack.
    Unlike the Rustler where, as you increase throttle slowly, the car goes nowhere, nowhere, nowhere, suddenly starts to accelerate, the crawler seems very linear.
  • MC November 29, 2010 at 4:48am
    Can you drive it "slow"?
    What motor(s) do you use?
  • GR0B November 29, 2010 at 4:06am
    Looks good, Almost makes me want to put my flying projects aside for more grounded projects.
This reply was deleted.