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Software / Re: real time operating system
« Last post by voyager2 on Today at 12:20:25 AM »
You haven't specified what device you would like to target your RTOS (Real Time OS) to so i am going to assume a small microcontroller (eg: PIC/AVR).
You might want a monolithic kernel actually, not a micro kernel. A microkernel can be very hard to implement on a small device because it requires complicated signalling between processes/tasks. Microkernels are better suited to more powerful machines like i386, x64, etc. A monolithic kernel is easier for a beginner to program and a better choice for a RTOS.
This ( site has a lot of info on OS design and implementation.

[...] you might want to
use a mini-kernel called, MINIX. This was the first primitive linux kernel made [...]

Linux != MINIX
(MINIX == unix-like) && (Linux == unix-like)
Linus and Tanenbaum had a famous argument about this.
  I did imagine something like that would be the issue. But would it be possible to get accurate coordinates using 2 or more cameras?
The optical illusions would be avoided, and most angles should be covered that way. Also, I was planning to use a sort of landmark in the field of vision which would basically be a reference as by having its distance from the camera known.
What I need to know is, will this method give me accurate enough coordinates so that, say a robot arm can trace them and complete the weld? 
Misc / Re: Analyzing the Axon series: Coding, Construction, and Contraptions
« Last post by mklrobo on Yesterday at 01:36:46 PM »
Axon Series: What is this thing?
I was looking through the AVR Studio 4 software, and found a feature of the software that is pretty cool.
When you open the software, on the right part of the screen, are the parts of the MCU that can be used.
This is the Axon simulator, which enables you to write a program in the software without actually
programming the Axon. This allows you to eliminate errors in your programming, while streamlining
the purpose of your application. The usage of the simulator requires more discipline in learning this
integration. The advantage of the simulator  is that you can program the Axon anywhere with your PC, without the
physical interface.
   8) You have to set up all the external items (motors, switches) with input files allocated in
the simulator. When running the program in the real world, if the external items you used do not come close to the parameter input file you set up, things could get interesting in troubleshooting.  :o 
Misc / Re: Evolution Robotics, ER1 Robot, and ERSP Thread.
« Last post by mcarraher on Yesterday at 09:58:03 AM »
Thank you Gabriel for the access, much appreciate it

Just a reminder for all people that have developed new stuff with their ER1, please upload to Dropbox so the other members can try it out. If by any chance you don't have an invite to the Dropbox account, let me know and I will add you.

Thanks to all,

Just got a er1 robot and I was wondering if the dropbox is still available, if so could I be added to it. email [email protected]
 8) Cool problem!   8)
I can offer only logical options; I am stumped at the programming of the Axon. I expect to
overcome this soon.
The tutorials in this forum cover camera AI. I do not know if there is enough information for you
to use to your advantage. There are some instructive videos in the video section that may offer options too.
Your request;
My question: Is it possible to derive the shape of the profile and the 3d coordinates of the intersection, from a video?
My response would be, yes, but may be expensive, depending on your objectives.
Industry used lasers in a calibrated area to determine the dimensions of your pieces to be welded. information from
video itself may prove problematic, because of scale and possibilitiy of optical illusions. (?)
Scale, space, emplacement of video are factors to be considered.
Cameras can pick up different spectral emissions, which may add to your advantage, as well as depth perception. (?)
Good Luck!  :) :D ;D
Mechanics and Construction / Re: need help for a newbie project
« Last post by mklrobo on May 21, 2015, 07:46:26 AM »
 ;D Hello!
Sounds like you need a locking solenoid. I think mouser used to sell these, Digikey might have them.
When the first volt pulse comes in the solenoid pulls in and locks into a position. Another voltage,
and the solenoid unlocks and goes to the other extreme. I have not seen on of these in a long time.
You may be able to get by with a locking relay, which controls a 2 solenoids; push pull effect.
May this idea well help unlock your options. Good luck!   ;) :) :D ;D
Electronics / Re: New member from Vancouver
« Last post by mklrobo on May 21, 2015, 07:41:37 AM »
 ;D Hello, and welcome to the Forum!  8)
Mechanics and Construction / need help for a newbie project
« Last post by Perry9394 on May 20, 2015, 12:02:11 PM »
I am doing this little project that I want to have a panel flip up and down 90 degrees, the panel is only 12x 6 x and 1 lb, I would like to have the flip motion to complete within a second, and controlled by either 3-poition toggle switch, or couple push switches.  Can anyone tell me what kind of parts I need in order to get this setup for 12V DC circuit?
Electronics / New member from Vancouver
« Last post by Perry9394 on May 20, 2015, 11:59:24 AM »
Hi, fellows, I am a custom car audio/electronics installer from Vancouver BC. nice to meet you all.
I would say that it is possible (remember the controller will be handling 2 motors on each channel so twice the current). Based on the specs of the motor controller you are using i assume you have decently sized motors and highly recommend having individual overload protection for each motor. This way if one motor stalls (or overloads) you will protect your system and anyone around your robot.
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