http://robots.net/person/jimbo/ robots.net blog for jimbo en-us mod_virgule Wed, 14 May 2008 04:49:22 GMT Wed, 12 Feb 2003 21:05:02 GMT http://robots.net/person/jimbo/diary.html?start=1 http://robots.net/person/jimbo/diary.html?start=1 Thanks to those who certified me. Hey, cool, I can post now. Tue, 11 Feb 2003 22:11:08 GMT http://robots.net/person/jimbo/diary.html?start=0 http://robots.net/person/jimbo/diary.html?start=0 I was going to post something on <a href="http://robots.net/article/696.html">the story about underwater robots</a>, but I can't because of this wacky certification mechanism. Anyway, I was going to write about Attitude Heading Reference sensors, which typically combine a three axis flux gate magnetometer, rate gyros and accelerometers. They do internal filtering and output angles and angle rates for yaw, pitch and roll. Two small sub-$2k devices on the market that we are currently evaluating:<br> <a href="http://www.isense.com/products/prec/ic2/index.htm">InertiaCube2</a><br> <a href="http://microstrain.com/3DM-G.htm" >3DM-G</a><br>