**** BEGIN LOGGING AT Fri Feb 13 02:59:58 2015 Feb 13 05:39:58 Can anyone help me in setting up StarterWare on linux ? I downloaded StarterWare-AM335X bin file from link: http://www.ti.com/tool/starterware-sitara. Problem is when to try to execute AM335X .bin file, control of terminal just goes to next line as if installation is completed successfully but still it is not installed.I already have gcc-arm compiler. Feb 13 05:50:48 or should I setup on windows ? Feb 13 15:42:06 vmayoral: Is it possible to do very small manuevers while hovering and remaining at a fixed height and position in air accurately using a quadcopter? Feb 13 15:42:27 using the ArduPilot firmware Feb 13 15:42:38 *ArduCopter Feb 13 15:45:48 hey Abhishek__, yes it is Feb 13 15:46:01 there's a mode called ALTITUDE HOLD that does exactly that Feb 13 15:46:32 this mode relays on the barometer readings for maintaining the altitude but it can be augmented using other sensors (e.g.: sonar) Feb 13 15:46:33 I'm talking something like motions being exectuted that displace the quad maybe by a centimeter in the plane parallel to the ground in an X/Y direction Feb 13 15:46:45 *executed Feb 13 15:46:55 at a fixed Z height Feb 13 15:47:38 yes, i'm speaking of a Z-fixed scenario. Centimiter precision displacements with copters in open spaces is something i still have'nt seen myself with no robot Feb 13 15:47:54 maybe on indoor scenarios and using a vicon system... Feb 13 15:48:03 (which means a lot of $) Feb 13 15:48:08 vicon is ? Feb 13 15:49:22 it's a camera, check the http://flyingmachinearena.org/ and their setup Feb 13 15:50:24 checking Feb 13 15:55:53 A vision system can be implemented, and speed isn't a concern so low FPS can do as well. I just wanted to know that given a ArduCopter hardware, which method or library functions I could use to execute very fine maneuvers while keeping the Z fixed, say, using a sonar setup. Feb 13 16:01:39 As i said, what you are looking for is ALT HOLD mode. That fixes the altitude (fixed, throttle, what you call Z axis) and gives you the option of moving the copter in a plane Feb 13 16:02:21 let me get you a link Feb 13 16:02:21 http://copter.ardupilot.com/wiki/altholdmode/ Feb 13 16:08:16 vmayoral: I see. What I wanted to try or inquire about is basically have a fiducial on the ground and use its image from a camera to make it stay fixed at one particular point and height. Feb 13 16:25:51 that's doable Feb 13 16:27:24 k, thanks :) Feb 13 16:28:16 also, how is the hold performance for low heights i.e. of the order of less than 2 feet? Feb 13 17:18:55 Abhishek__: check some of our logs to get accuracies if you're interested. You'll get graphs similar to these ones https://www.gitbook.com/content/book/erlerobotics/erle-robotics-mav-tools/en/understanding_a_log_file/altitude_hold.html Feb 13 17:20:04 there're tons of logs here https://github.com/erlerobot/logs Feb 13 17:21:18 you can expect about 30 cm - 1m of error Feb 13 18:32:35 I got a 401 error on trying to check the book **** ENDING LOGGING AT Sat Feb 14 02:59:58 2015