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York Jong

PHOTORESISTOR ALGORITHMS - 0 views

www.societyofrobots.com/rogramming_photoresistor.shtml

algorithm photoresistor photovore robot sensor

shared by York Jong on 14 Jun 07 - Cached
  • pseudocode: read left_photoresistor read right_photoresistor if left_photoresistor detects more light than right_photoresistor then turn robot left if right_photoresistor detects more light than left_photoresistor then turn robot right if right_photoresistor detects about the same as left_photoresistor then robot goes straight loop
  • Photovore Algorithm, Improved This algorithm does the same as the original, but instead of case-based it works under a more advanced Fuzzy Logic control algorithm. Your robot will no longer just have the three modes of turn left, turn right, and go forward. Instead will have commands like 'turn left by 10 degrees' or 'turn right really fast', and with no additional lines of code! pseudocode: read left_photoresistor read right_photoresistor left_motor = (left_photoresistor - right_photoresistor) * arbitrary_constant right_motor = (right_photoresistor - left_photoresistor) * arbitrary_constant loop
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  • Photovore, Split Brain Approach This algorithm works without comparison of photoresistor values. Instead, just command the right motor based on light from the right sensor, and the left motor with only data from the left sensor. You can also get interesting variations by reversing the sensors for a cross-brain algorithm. pseudocode: read left_photoresistor read right_photoresistor move left_wheel_speed = left_photoresistor * arbitrary_constant move right_wheel_speed = right_photoresistor * arbitrary_constant loop
  • York Jong on 14 Jun 07
     
    The photovore is a robot that chases light, and is perhaps the simplest of all sensor algorithms. If you are a beginner, this should be your first algorithm.
York Jong

CAROLL: a Cheap Autonomous Robot for On-Line Learning - 0 views

www2.lifl.fr/...caroll.html

learning pic q-learning robot

shared by York Jong on 29 May 07 - Cached
  • The algorithm used here is a simple Q-learning algorithm
  • York Jong on 29 May 07
     
    This document describes the conception, building and programmation of a non-expensive autonomous wheeled robot, using as few electronic parts and special skills as possible. It makes use of a cheap but strong micro-controller, with enough program and data
York Jong

PROGRAMMING - PID CONTROL - 0 views

www.societyofrobots.com/programming_PID.shtml

control pid

shared by York Jong on 01 Jun 07 - Cached
  • The only time you will need this term is when acceleration plays a big factor with your robot. If your robot is really heavy, or gravity is not on it's side (such as steep hills), then you will need the integral term.
  • The sampling rate is the speed at which your control algorithm can update itself.
  • To increase sampling rate, you want an even faster update of sensor readings, and minimal delay in your program loop.
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