Ebay CNC Motor/Driver Kit - Please recommend one

[njhussey]

It's a better kit but to get the best out of those Stepper motors you need to run them at as high a voltage as possible, 80V drivers would be best. To do this you need better drivers. The leadshine steppers are digital ones and will drive the motors much more smoothly than the analogue ones. At the end of the day it's up to you and will depend on your budget but it really doesn't do to scrimp on the electronics.

BOB's are fairly universal in that you can connect almost anyone's drivers to them as all they are doing is taking a signal from whatever program you're using to drive the machine (Mach, LinuxCNC etc...) and doing their stuff to it and passing it on the the steppers.

Hopefully someone more experienced than me will be along to explaing more fully.....

[JAZZCNC]

BOB's are fairly universal in that you can connect almost anyone's drivers to them as all they are doing is taking a signal from whatever program you're using to drive the machine (Mach, LinuxCNC etc...) and doing their stuff to it and passing it on the the steppers.

NO NO NO another big mistake often made is thinking BOB's are simple things so cheap will do.!! . . . They handle all the signals all the Data passes thru them and good stable CNC machine is all about the quality of the signals feed to it. So no matter how good the signals going in if those signals get corrupted by cheap nasty BOB they will come out fuzzy wuzzy and the Machine will perform Fuzzy wuzzy.!!

Many many hours, days,weeks and not mention Hair have been lost to poor quality BOB's.

[Rich]

Hi Glyn,

There a lot to be said for safety in numbers when it comes to buying electronics ) Especially when it comes to ordering the various component parts. It can sound like you are being presented with a narrow path, but its not, its sound advice that will save you time and money.

If you have not already done so, it is worth scanning/reading through the Mach 3 product manuals. They have useful things to say about the relative importance of the electronics you chose and how everything fits together.

Should you find the time, I would recommend scanning through this document - just the relevant bit towards the start:

http://www.automation.com/pmd/Motion...hineDesign.pdf

You may not plan to complete the machine with a motion control card in place, but it is worthwhile planning the purchase of your BOB with one in mind - IMHO. It all looks a bit daunting at the start, but honestly, it doesn't take long before you will be looking at those Ebay deals in a different light.