Henrik
Sweden
Asked
— Edited
I found this video:
Would be fun to build one like that, does anyone have any experience on how to make one? The mechanics doesn't seem to be that hard, more the programming. I do have the programming skills, just dont know how to start
Questions that come up:
- How do the robot know the distance on where to draw on the paper and how long the arm should move etc? Is it calibrated to know (like servo pos 1 - 50 is X inches)?
- How does it know which lines are already drawn and which are not, does it only use the camera to distinguish that?
That's neat. You would really have to use the EZ-SDK for that one. But, it won't be super duper tough.
First thing you'll need to do is convert the image into a gray scale.
Then there are many filters in projects like aForget.NET which will allow image processing. You can turn any image into a set of lines. Then you'll simply need to convert the bitmap of lines into relative servo positions.
There are functions within EZ-SDK to do all of that :)
Thanks for the reply, DJ!
Yeah, I know about aForget.NET, used it before. Sounds good, now I know where to start. I dont expect the result to be perfect, but would be cool if it could draw something that looks like a person, or whatever it is :)
The challenge will be with the image noise. In order to apply the filter, your background will need to be a single color, like a white wall. Once that is done, the rest will be quite easy.
I you'd like, you could make the robot arm draw with dots instead of lines. That'll be even better. Because you can use a marker and determine the dot darness by the length of time holding the marker on the paper. :)
HI
Remember the old logo driven turtal bots with a pen . You cauld use one of those to do the drawing .
Updated to work with ez_b , Big pictures on the floor.
Steve_C
I've ordered some stuff that I need for the arm and expecting it on monday or so, updates will come! :D
Oh that'll be awesome! Can't wait to see it :D