jstarne1
USA
Asked
— Edited
Hi , I have been shopping for sensors and reading about 2d mapping using.radar.extra.and I also read on some random sites that a good electronic compass is a good addition to get your robot correct orientation if it deviated from a original path avoiding a object or if the little guy.just.just drive perfectly straight. are these compass modules useful.to.tell your.robot which.direction to.go.or slightly correct.itself? I apologize for all the random periods because I just bought a new Samsung galaxy note and IM still getting use to it. The auto correct is changing words to what it thinks I should have said I guess lol
Josh,
I bought the cheap sure compass. ARC has a support for it. it draws a compass on the screen and shows you what direction you are headed in. It works great. And, if it doesn't you have a place to calibrate it. this is all automatically built into EZB. But, I believe, you MUST get the I2C version of the SURE compass. D.J. would know whether a digital or analog version would work. But, this one works Great. He even has a video on it.
Hope that this helped,
Mel
Also, you must keep your wires as short as you can.
And, it is the same compass from SURE that you have in the LINK above.
And there are EZ-Script commands for the compass
Ok I'll risk an order to China. Its the lead time and possible local import taxes that shouldn't be applied in this case as the value is too low that normally bothers me so fingers crossed
Anyone tried ferrite beads on the signal wires?
I ordered one as well. No issues with stuff coming from China.
Now on order
i got mine in from SHURE ELECTRONICS and bought other stuff from them too,they seem to be pretyy good,better then others selling SRF04 sensors with i got a few bad ones from but if looking for a much better one with higher accuracy look at CMPS03 OR THE NEW CMPS09 it may last longer and has much higher accuracy ,but with all better sensors more you pay ,better it is old saying always go ,"you get what you paid for " i have the CMPS03 and its working a lot better,but at $50 to $35 each,i got mine ,one for $35 and another for $48 it uses I2C commands,most likely others like to save money,so the one from SHURE ELECTRONIC should work ok,i made a connection board for mine and looking to hook it up to my EZB robot
BUT becarefull where you place it,needs to stay away from magnetic fields,like servo's,motors,hard drives and dc fans or you will not get a correct reading,mostly 6 inches away or more one reaon it hard to place in robots,CHECK the data sheet it will tell you this
also MEL is right,i forgot about keeping the wire short on EZB on other processors doesnt matter,so need to run tests and find out why i think its impedance of the I2C output
don't forget, D.J. has a video on it.
Mel