Bipod setup

Built-in Ubuntu Updater.

Hi,

Using built-in Updater is very useful, if you do it right.

The update-manager (UM) will deactivate all third party repos, like emc2 in its first run. UM will aks you, if it should do so. Accept YES, because aptitude thinks, that emc2 is out of date (no repos) it will completely remove emc2. Then you get a Ubuntu 10.04 without RTAI. Then add EMC2 to the repos back again. Update and install emc2. linux-image-2.6.32-rtai-122 will install. Boot with rtai. remove generic image. Done.

What is the difference to overwriting?

No problem, if you make it right. It will not break, but you must know what you are doing.

I gave it a chance in a virtualbox environment and it was a better update than ever. Believe me.

Regards

Wolfgang

andypugh wrote:
In a trivial kinematics machine (cartesian joints and cartesian axes) you would just change the mapping between motors/joints and axis positions commands in HAL.

With the bipod, however, you will probably need to alter the kinematics source-code. (exchange pos->tran.x with pos->tran.y throughout)
It seems odd that you would have this problem, however, if other people have not.

It's just a matter of definition.
The bipod code is based on the definition, that the x axis is parallel to the straight line between both bipod reference points. This is of course arbitrary. But I think Andy is right: the only way to change it, is to change the c-code.

Gerd

Hi Gerd, Andy,

it is a question of winding the ropes. CW and CCW are not the same.

And I set up with the wrong stepping parameteres not suitable to the driver. My mistake.

To make shure, it is correctly winded:

Let the ropes hang free and unwinded! Then pull them up with + in emc2 to ensure the correct direction of winding. Then go to world mode.

####

Part 2:

Does anyone care about the correction of COMP and its Makefile template? Should be done, so that inexperienced users can build modules on their own.


Wolfgang

BigJohnT wrote:

There seems to be nothing wrong with COMP in a proper install of EMC2.

John

Not sure about that. As far as I remember there was a problem with a missing header file in my 1st 2.4 installation.
Unfortunately I am under water with my professsion ATM, so I could not care about it.
Could be with an official version, it is fixed.
I will check as soon as I have time.

Gerd

Hi Gerd,

thanks. Would be interesting, whether comp works for you on your machine. PM follows.

I have filed a bug report about that with my sf user. Hopefully correct assigned.

I am going to buy some styro to make a real test with this work.

Regards

Wolfgang

I made a quick test with my fresh 10.04/2.4.4 system.

I still have this error:This symbol was in 8.04 in a header file, now its missing or moved.

There is another thing, I found by chance:

If the path name where your files are located contains blanks, there are additional "no such file" errors.

Wolfgang, make sure your work path does not contain any blank or other special characters.

Gerd