dicka
USA
Asked
— Edited
I am in ARC and using only the Camera and Modified servo Movement Panel controls.
The camera/horizontal_servo does a fine job of color-tracking a stationary red target.
I have forward and left/right movement enabled in the Camera control.
I Start forward motion in he Movement Panel, the robot moves forward, the camera tracks the target, but the robot never turns toward target.
Just to make sure I also did not command Start (in case the Camera control performed that task) and the robot did not move.
It seems so simple. Am I doing something wrong?
Category: Examples
Any help on which settings to have turned on and off would be a great help.
This is the Hardest Section to get working for me. I still have not got that part. All of the other sections are LIGHT YEARS Ahead and work great. I KNOW that it works, because I saw it work in D.J.'s video. But, you have to set all of the items correctly and have good sensors. I have completely re-built my robot and replaced all of the wiring and sensors, but, still have problems. My apartment is just too small and cluttered to really give it a fair test. Also, my lighting is not too good. If you don't have proper lighting or only some types of sensors that don't sense right, it won't work. On another project I did, the robot sensed and worked fine. But, it was made when I have had a proper place for it. I had sonars and IRs because some of them won't work in direct sunlight and some won't work in UV light or with the color black. I had a sofa/couch set that was black and a fireplace screen that was black and they ran right into it. And, it would run into chair legs and table legs before. But, when I placed BOTH IRs and Sonars and did it INdoors, it all worked. I used EZ-Max sonars and Sharp IRs.
I have built probably more than a dozen robots and ONLY that little robot Bob which is on my
avatar worked. Sadly to say, BOB is no more after 5 years. I took him apart to use the sensors on my EZB project. He was the ONLY robot I built that worked Perfectly.
I'm glad it's not just me with this issue but wish I knew about it before, now I have to buy extra items and pay more excessive shipping costs... Does the expense ever end?..
What ever sensor you have, get the other one to add to it. If you have a sonar, get an IR and the reverse. This will cover Most of the bases and will see black. I forgot which one was which. Also, my florescent lighting messed up one of the sensors trying to work.
D.J. will say the final word on that. I am just trying to be helpful.
When "Motion Tracking" is enabled as a tracking method, the robot's camera would need to be stationary and watch for "motion". If the robot were to move, the entire image would change and therefore result in "motion". "Motion" is when objects within the camera view have changed
Color tracking very easy also. Select Color Tracking, and switch to the Color tab. Now you may hold your specified desired color up to the camera, and slide the Brightness dial until only the object is detected. Move it around to ensure it is detected from different shadows of light.
You will require proper lighting for color detection - and of course, if you have other similar colors in the room will cause a problem
Glyph detecetion will detect the 4 glyphs printed on paper. You can press the ? button within the camera control (next to the X Close) to view the tutorial help. The glyphs can be printed from that page.
Face detection is harder on the CPU, but it should be obvious as to what it does
Please refer to my initial post
I am uploading the simple file as directed.TrackTest.EZB
"Enable Movement Tracking" will use a movement control to move your robot toward the detected object.
Every control has a ? next to the Close button. Press the ? to load tutorial/help for that control.
Keep in mind, if you select "Enable Movement Tracking" and you also select "Enable servo Tracking", then you have two tracking methods. the option is there for advanced users who have robots setup for two tracking types. I'm sure you can imagine in your head will what ill happen
Best to use one or the other until you have more experience
Thanks again for your help.
I didn't understand enough about the two tracking types. I was thinking I needed only to enable the servo tracking, forward movement, and left/right movement for which the robot would home on the target. For some reason I was thinking that the motion tracking applied to a moving target and I had a stationary target, but of course it is all relative whether the target or robot is moving. I had played around with all of these but did not stumble on the right answer, even though I had read and viewed the tutorials. (I know.... it's hard to make them all inclusive.)
If I enable everything but relative position tracking my robot DOES home on target.
However, all I really need to do is hard mount the camera and enable relative position tracking and movement tracking, and allow forward and left/right movement. I did this by disabling the camera servo and the robot homed on target.
I hope that documenting my experience here will prove of use to other newcomers.