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Builder Info
Build Log
-
03/09/10
-
03/19/10
Builder's Other Projects
Activity
PlexiBot
Tags:
Category:
Rolling
Progress: In Progress
Cost: 140.00 USD
Time to Build: 1 year, off and on
Simple differential drive rover:
- Locked anti-phase PWM for speed/direction control
- IR sensor ring for obstacle detection/avoidance
- Light detection via CDS cells
- Sound feedback via Piezo element
- User input via menu system (4x20 LCD, rotary encoder, push buttons)
Wheels, body, and risers are hand-machined plexiglass.
Tires are the rubber drive belts for a vacuum cleaner.
Brain and motor circuits are opto-isolated from each other.
Powered by two rechargeable 9-volt batteries. Can run for about 15 minutes non-stop before motor battery needs to be recharged.
Eventually the bot will be used for testing subsumption-style behavior.
Current behaviors:
- cruise
- escape
- photo anxious-ambivalence
Still need to add:
- Bump sensors
- Odometry
- More behaviors
May also add sonar, and possibly a web cam just for fun.
Recent comments
- Electronics has gone from
31 weeks 2 days ago - Hi,
Nice design, very
31 weeks 5 days ago - That's a difficult
32 weeks 5 days ago - I like your ideas of robot
32 weeks 6 days ago - That's pretty much how
32 weeks 6 days ago - Personally I feel a word's
32 weeks 6 days ago - I used very very small pager
34 weeks 1 day ago - I used very very small pager
34 weeks 1 day ago - This was one of the very few
34 weeks 6 days ago - Another great nano! Saw this
34 weeks 6 days ago
Who's new
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Comments
Excellent design and build,
Excellent design and build, and I really like the long exposure photo.
Your stuff is pretty neat:
Your stuff is pretty neat: Where can I get the small maxon motor?
The motors are often
The motors are often available via surplus (All Electronics, Electronics Goldmine, MPJA, etc.), and almost always can be found on Ebay. Just search on "Maxon motor".
it's wonder full
it's wonder full tought......
g8t tought
I agree, beautiful robot!
I agree, beautiful robot! Nicely done. Would love to know some of your plexi secrets. The stuff always cracks when I look at it funny :)
That's a beautiful robot,
That's a beautiful robot, jbot. I'm impressed that you decided to opto-isolate the motor/logic circuitry. What motors did you use for this?
Thanks for the kind comments!
Thanks for the kind comments! The motors are small Maxons that cost about $17 each surplus. I can't read the model information off of them at the moment because of the way they're mounted.
The gearing on them provides a little too much speed and not quite enough torque, but that's not a big problem if I run them at 70% power on linoleum and 100% power on carpet (adjustable on the fly via the menus).