ok, here's another one:
integrated compass, gyro, and accelerometer
with hardware-integrated Kalman or Monte-Carlo-Filter to reduce drift and noise;
hardware-integrated calculation: output vector of
3D angle heading (roll, pitch and yaw),
and 3D location
and even 1 more:
based on 4 ultrasonic senders
mounted "+" shaped (about 1m diameter, from one end to the other)
NXT sends IR request to one US sender after the other
NXT measures runtimes of the returned US impulses
calculation of the relative position out of runtime differences of all 4 running times
Last edited by doc-helmut
on 13 Oct 2012, 09:08, edited 1 time in total.
NXC CHESS for NXT: http://www.mindstormsforum.de/viewtopic.php?f=70&t=6790
indispensable for NXC + EV3-C: easy + trouble-free network & remote control for rs485, Xbee, BT, USB!