The Hell Ya Beller Fun with hot, pointy, sharp, and caustic stuff.

31Oct/110

Scout: A printable tribot

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Here's the first iteration of 'Scout'.  A simple printable frame for a robot based on two continuous rotation servos and an Arduino.

The idea was to limit the number of printable parts and 'vitamins' to the bare minimum and keep the total cost for the bot below $50.  I'll use this to teach the robotics merit badge in December.  Here's how the costs breaks down:

 

 

  • 2 Futaba S3003 servos or equivalent (modified for continuous rotation).   $4.50 each.  I found deals on ebay to buy sets of 4 for $16 with no shipping.
  • 1 arduino diecimila.  $20 - 25.  Also an ebay deal.  A nano may work better.  I'm still looking into this.
  • 3 o-rings for tires.  $3.00. Might be possible to replace these with rubber bands.
  • 9V battery
  • adapter
I still have to add some form of input.  This can be as simple as a bump switch (couple bucks)  or I may have enough budget for an ultrasound sensor.  Stay tuned.

 

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