Scooter Bot
@ December 24, 2009
The scooter bot has both tele operated and autonomous modes. It's fast; top speed around 12 MPH. Current autonomous mode is limited to navigating a space using front and rear IR sensors and wheel encoders.
Cost to build:
$400
Time to build:
100 hours
Weight:
18143 grams
- Actuators / output devices: 2x 350w 24v scooter motors, laser pointer (just for fun)
- Control method: VEX radio transmitter and receiver
- CPU: Parallax Propeller
- Power source: 2x 12v 5Ah sealed led acid battery
- Programming language: Spin
- Sensors / input devices: Panasonic (PNA4602) IR Detectors with Standard IR Emitters, 2 x QRB 1114 IR transmitters and receivers, bumper switches
- Target environment: Mostly outdoor, also indoor
This was a fun robot to build. It's our 4th. It's the most agile one we've built so far. The 2 wheels mounted on the center access provides great maneuverability. I'm using small non-driven castor wheels in the front and rear. I use a simple toggle switch to toggle between fast / slow modes for outdoor / indoor driving. It's way too fast to drive indoors in fast mode. In slow mode, the microcontroller (propeller) just applies a maximum speed it sends to the speed controller. The Scorpion speed controller from robot power works great with the big 24V motors. I have a 25A fuse on each motor just as a precaution.
@ Sat, 2009-12-26 07:36
Wow! :) He's faaaast :)
@ Sat, 2009-12-26 00:26
Wow, Scooter really gets
Wow, Scooter really gets around on those motors, handling looks pretty good too.
Still planning on adding a claw? That would be awesome =)
@ Sat, 2009-12-26 20:16
Yea, the claw is next.
@ Thu, 2009-12-24 23:15
fast