Updating EMC2 V2.3.5 on Ubuntu 8.04 fails

I'm having trouble trying to upgrade to linuxcnc on ubuntu 8.04. I fail at the first step, upgrading 2.3.5 to 2.4. The repository python-numpy is not found.

linuxcnc.org downloads, state that an 8.04 live cd exists. Then further down the page it states to install the live cd with 2.3.5 and upgrade to 2.5. Then the instructions state you must upgrade to 2.4 first.

Unfortunately I can not run 10.04 as my hardware is too slow. 2.3.5 is giving me a limit error. It appears to be noise. It will not allow me to home any axis. I was hoping I could filter the limit input with v2.5.

i would also look at updating your system , as of ver 2.6 the older versions are are being retired , so updating long term will give you problems
perhaps now is the time to look at your pc and look towards using version 2.6.3 on a more appropriate pc for the future ..

I'm having trouble trying to upgrade to linuxcnc on ubuntu 8.04. I fail at the first step, upgrading 2.3.5 to 2.4. The repository python-numpy is not found.

8.04 is dead, in fact so is 10.04

There is still some backported and specially built support to be had from launchpad

launchpad.net/ubuntu/hardy/+package/python-numpy

This shows you how to add it to your apt sources.list

ubuntuforums.org/showthread.php?t=865741

regards

Andypugh; Thanks. I will try implementing a hal filter. Though I think I will try disabling limits, and shorting them out one at a time to see if I can find an open in the wiring. Didn't have stranded wire available and maybe its opening up.

Do you have a source for how to use hal to debounce and input?

I did not try uninstalling 2.3.5 yet to install 2.5 directly. I have seen posts that additional software may require to be deleted too though its not clear if that will be required from the ubuntu 8.04 emc2 liveCD. The posts state that additional files need to be deleted if one compiles emc2 on your system. Installing 2.5 direclty will be my last resort if the upgrade path does not work.

I have acquired another PC that might be able to run 10.04 that I have not tested yet. This would be my third choice, and depending on how it tests I may do it sooner.

Then I have an XP box that I use as a print server. If I upgrade to a win7 box for printing I could repurpose the xp box and run a later version of ubuntu. This is my fourth option as I"ld rather not buy a used win7 box to replace xp.

ArcEye; Thank you for the repository links and instructions. I'll try testing my wiring some more first, AndyPugh's hal debounce suggestion second, then continue to try to upgrade to 2.5 before working on a newer replacement PC. I'm currently using a 386 circa 1991. Unfortunately I'm at 800 MHz and 756 MB of ram.