Differences between version dated 2007-07-25 20:09:45 and 2007-10-29 19:04:05
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An [http://microcontrollershop.com/product_info.php?products_id=140 Atmel STK200] sporting an [http://www.avrfreaks.net/index.php?module=Freaks%20Devices&func=displayDev&objectid=66 Atmel MEGA162] microcontroller handles the low level i/o functions of reading sensors and sending commands to the motors.
The wheelchair motors are controlled by 2 [http://www.ifirobotics.com/victor-883-speed-controller-robots.shtml Victor 883] motor controllers.
Have since added a second [http://www.atmel.com Atmel] AVR. This one is in an [http://www.olimex.com/dev/avr-p40-8515.html Olimex P40 8515] board. The reason is that the single Atmel could not get accurate timings on the compass module while it was busy sending rs232 data, updating the clock, etc. This second module will be dedicated to reading the compass with no other interrupts to interfere with timings.
The wheelchair motors are controlled by two [http://www.ifirobotics.com/victor-883-speed-controller-robots.shtml Victor 883] motor controllers.
http://www.robotgroup.net/eric/seeker/SeekerSide1.jpg Left Side
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