Recent Posts

Pages: 1 2 3 ... 10
1
 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
2
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
3
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)
4
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?
5
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.
6
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.
7
I have the AX3500 MOTOR CONTROLLER which can lead 2 motors. My platform needs four motors. Can I connect per two parallel;The type of the motors is: IG52-04 24VDC 285 RPM Gear Motor
8
Misc / Re: Analyzing the Axon series: Coding, Construction, and Contraptions
« Last post by mklrobo on May 19, 2015, 12:57:45 PM »
Axon Series: What is this thing?
While I was watching Creature Feature Friday night(while eating pizza. ), I think I figured the programming out.(pizza is brain-food!  :o ) In one of the tutorials, you have to have a software bootloader to load your program into the Axon!  ??? (was to save $36 for a physical bootloader.) I went ahead and bought a bootloader, in which can be used; just need to create the hex file for the program to load into the Axon. If you do use a bootloader, you can always go back and use the software bootloader.(It overwrites the other one  ;D) The instructions say, "Download and install the .exe into the same folder that you have your compiled robot code." Does this mean that the bootloader is loaded automatically everytime with my program? Or, do I program the bootloader first, then my program?
I guess,  :-\ I will try to program the Axon directly with my physical bootloader, then use HyperTerminal to
try to get some feedback from it. Will try to get as much information that I can, so as not to blow the
Axon!  :'( :'(
It would appear that I have gone through ALOT of trouble just to program the board; have not even started to actually USE the Axon at this time. To compare in context, I was spoiled by Parallax; I could just load their software, and begin programming. The basic stamps were fun and easy; The Propeller, on the other hand, is challenging, depending on your applications. I was looking back through the program that I used to program the propeller, and it appears to me now, that they have the bootloader added to your program, and downloads when you program it automatically, AND brings up a terminal program for you, to interact with the MCU right then. I like this feature, because it gives instant feedback if my programming
actually works, and I can see the effect on the attached devices instantly. The processing power of
the Propeller is unmatched, and I have to admit, overshadows the Axon. BUT, each MCU has pros and cons, (features) that can be used to the programmers advantage. The great advantage of the Parallax propeller is an 8 cog (MCU) feature, each offering 20 MIPS per cog.
Fantastic programs have been created that take advantage of this. This is attributed to Parallax, but
also the programmers in the forum. In that context, I believe the Axon can be used to create fantastic programs too, if programmer(s) in this forum can contribute together. (not to imply that there are
not great programs already written.)  The Axon only has 1 cog, running at 16 MIPs. BUT, it has internal
features that run independently of the MCU, and do not take up valuable processing power.(time)
For instance, it may be able to "clock" an event, without tying up the count feature in the MCU,
but letting a timer handle the operation, by commands in registers. So, the Parallax propeller has
power, but the Axon may be able to approach the difference by clever programming. Languages
such as FORTH, have been adapted for the Parallax Propeller, to process at incredible speeds for that
class of MCU. It would be logical to expect that the same could be done for the Axon, enabling
faster programming and more options in applications.  ::)
9
Electronics / Re: What technology lies behind collaborative robots?
« Last post by maxobot on May 18, 2015, 08:34:47 PM »
Thanks knlrobo for elaborating on this!

By exoskeleton I mean a robotic skeleton that a completely healthy person can wear as a means assisting in carrying heavy objects - an example is a soldier carrying all the ammunition and other stuff (can get to around 40 kg overall at times). So we are not yet on the same page on this.

The ones you are referring to are not yet that mature to perfectly interpret person's intended moves to execute, while I am referring to the ones perfectly and timely executing all required operations and ready for mass production.
This is the kind I am talking about https://www.youtube.com/watch?v=0hkCcoenLW4

I guess FSR (force sensitive resistors can be utilized for an exoskeleton.
But how this beast would let move itself https://www.youtube.com/watch?v=1KevQchHS4w
There are no FSRs there, that's for sure, and that's what I am trying to find out.
10
Mechanics and Construction / Re: Coils for a linear motor actuator
« Last post by mklrobo on May 18, 2015, 03:02:40 PM »
 8) cool concept! n 8)

Your request...
I'm exploring an idea for a linear motor actuator, with step control.
If I want to buy the individual electromagnet coils for each control section, what would be best to search for? The idea is that each coil could be operated separately, and lock the core in place, or be used in sequence to move the core.
That request is multifaceted in many respects. I do not know where to start..........
To summarize, you want to build a series of electromagnetic cores that work together to
secure movement in a linear fashion to do work.(?)

This type of device is called a solenoid. Now, sequencing multiple solenoids, use phase control,
to multiply work; I have not seen. I have not seen phase control on a solenoid. :o VERY INTERESTING!
Phase control can produce "hotter" power than regular "clean" power.
You could experiment with a solenoid, using a DC drive; The DC drive could be programmed for
any number of phase controls which may result in your desired power control. That would
produce an advantage I have not seen before.(it may already exist, though)
To be more efficient, you could use a PIC controller to produce the desired DC/AC Phase control,
condensing the size of the solenoid. If this works, it could be used to have more power in
robotic hands.(more electronics though!) Interesting; Good Luck!!!!  ;D ;D ;D

Pages: 1 2 3 ... 10

Get Your Ad Here