CM510 still not working
by Fritzoid
Tue Jan 26, 2010 7:46 pm
I see at least four possible sources of the problem.
1. The CM-510 itself, blown UART or something.
2. The USB2Serial dongle, something physically wrong again.
3. The USB port on the computer is bad.
4. Your copy of RoboPlus is somehow corrupted, have you reinstalled yet?
To determine which one you need to isolate each source from all the others using equipment that is known to work otherwise. For example talking to the CM-510 without RoboPlus on a PC with a real serial port. And, use the USB2Dynamixel to talk to another computer or a modem.
Also at this point you need to consider that one bad component could be blowing out the others.
If the CM-510 worked for the distributor then take it back there and see if it still works.
When things get this bad, chances are that there are multiple problems here complicating the picture.
1. The CM-510 itself, blown UART or something.
2. The USB2Serial dongle, something physically wrong again.
3. The USB port on the computer is bad.
4. Your copy of RoboPlus is somehow corrupted, have you reinstalled yet?
To determine which one you need to isolate each source from all the others using equipment that is known to work otherwise. For example talking to the CM-510 without RoboPlus on a PC with a real serial port. And, use the USB2Dynamixel to talk to another computer or a modem.
Also at this point you need to consider that one bad component could be blowing out the others.
If the CM-510 worked for the distributor then take it back there and see if it still works.
When things get this bad, chances are that there are multiple problems here complicating the picture.
Great, back to doing some fun stuff
by marcdimmick
Wed Jan 27, 2010 6:16 am
Fantastic, it took me 3 weeks to resolve my issue I fully understand your frustration. 
Looking forward to the new vids
by marcdimmick
Wed Jan 27, 2010 7:56 am
I have been working with the software and getting some things happening but looking forward to seeing the new vids. You should look to make a series I would love to link them on a site I have been working on. I am not sure if you have seen it www.robotusersaustralia.com I am trying to get a user group going in Australia. See how I go.
by Compadre
Fri Jul 22, 2011 4:05 am
You guys have good simulations there, but still the 57,600 kb restrictions for the rs-232 is kind of stunning.
Because this let you control within 25 ms margin for doing all the computing stuff.
If we add 2 more dynamixels this time is still reduced, if we consider 2 ms for reading ports the time required for computing online control laws is very minimal.
Lets put 15 ms for sending informations among robots and the time is still reduced. If we want to compute derivatives integrals and filters you can think that the time for game strategy is like 6500 micro seconds so there is a hardware update to do.
In comparision if it takes to google about 125 ms to reply a ping this gets a physically present robot very fast.
Because this let you control within 25 ms margin for doing all the computing stuff.
If we add 2 more dynamixels this time is still reduced, if we consider 2 ms for reading ports the time required for computing online control laws is very minimal.
Lets put 15 ms for sending informations among robots and the time is still reduced. If we want to compute derivatives integrals and filters you can think that the time for game strategy is like 6500 micro seconds so there is a hardware update to do.
In comparision if it takes to google about 125 ms to reply a ping this gets a physically present robot very fast.
