It's very interesting! I enjoed the course, too!Originally Posted by cr0sh
Magnetic wire to define border area for robot path
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29th April 2012 07:39 PM Thread Starter #21marcusbarnet
Because you will need a lot of hard drives Originally Posted by 4pyros
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29th April 2012 07:43 PM Thread Starter #22marcusbarnet
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29th April 2012 09:44 PM #23cr0sh
Yeah - I missed the first iteration of it, but when I saw it was running again, then found it was a "self-paced" course, I decided to try it out; right now I am beginning the last programming question before the homework on unit 2. Last night it didn't make any sense to me, so I am hoping it makes better sense here in a few minutes (been procrastinating on it a bit - but hey, self-paced, right?). I think he is wanting you to implement a 1D Kalman using matrix math (as I am sure the homework is to do the same, in 2D - but I haven't checked), but it didn't seem clear to me last night. Originally Posted by marcusbarnet
It's very interesting! I enjoed the course, too!0
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29th April 2012 10:28 PM #24cr0sh
Welp - just got past it; re-watched the video and realized that he wanted us to implement a multidimensional Kalman - not 1D. Once I understood that (and the matrix class he supplied), it was relatively straightforward to plug-n-chug the pieces in place to implement the Kalman properly. Now on to the homework...
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30th April 2012 08:42 AM Thread Starter #25marcusbarnet
Multidimensional Kalman filter is one of the most important tool to develop mobile robot: I remember it when I studied, this kind of filter was in a lot of exams
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30th April 2012 09:14 AM #26ghostman11
ok just a thought but, how about a remote controlled mower, the idea being you drive it around by remote once and it saves the info in memory so next time it just follows a save path all you would need is decent encoders ect on the motors. or is this a stupid idea
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30th April 2012 10:04 AM #273v0
Coop Build Coordinator
Wheel slippage is enough to make the remote idea not work.
0Please post questions to the forums. PM's are for personal communication.
BCHS/3v0's PIC C18 Tutorials
Mondo Tech's Super Probe
Brian Schmalz's USB Bit Whacker
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30th April 2012 11:58 AM Thread Starter #28marcusbarnet
Yep, encoders are good only if you are on a good ground, but they are not accurate if you are in a sandy terrain because wheels can slip and give bad readings. Originally Posted by 3v0
I think the dog fence is the only suitable solution at this moment in addition to a non-randomly path.0
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30th April 2012 01:40 PM #293v0
Coop Build Coordinator
This is a rough idea and it would take a good number of magnets.
Use rare earth magnets at the end points of each path/strip to be cut. Use an electronic compass to move from end to end.
Play with the setup to see what % overlap is needed to prevent missing grass.
This would mow east and west.
You could get fancy and use the magnets as addresses.Code :East Magnets West Magnets --- --- --- --- --- --- --- --- --- --- --- --- ... --- ---
0Please post questions to the forums. PM's are for personal communication.
BCHS/3v0's PIC C18 Tutorials
Mondo Tech's Super Probe
Brian Schmalz's USB Bit Whacker
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30th April 2012 01:44 PM Thread Starter #30marcusbarnet
Can you explain better your suggestion, please?
It looks interesting..0
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