Isel CPM 3020 - run with mach3?

[mchipser]

First let me say I know this is an old thread, but I just received the same CNC and was also wanting to do a mach3 conversion.. Gleaning from the previous post it looks like I can reuse the stepper motors and just need to replace the drivers and PSU, then a motion controller..

I ordered everything I think I need to get it done..

Shopping list:
x3 STEPPERONLINE CNC Stepper Motor Driver 1.0-4.2A 20-50VDC 1/128 Micro-step Resolutions for Nema 17, 23, 24 and 34 Stepper Motor
x1 LETOUR DC Power Supply 36V 350W AC 110V Voltage Converter DC 36V Adapter Aluminum Shell LED Power Supplies for Visual Doorbell, Brake Machine, Electric Driver (Silver) DC 36V 9.7A POWER SUPPLY
x1 SainSmart 5 Axis Breakout Board for Stepper Motor Driver CNC Mill
x1 C2G/Cables to Go 10338 DB25 Female Parallel Add-A-Port Adapter Cable with Bracket (11 Inch)

I already have a ESS (Ethernet Smooth Stepper) to use from a previous build..

Is there anything else you can think of?

Also to Steve-m, if you haven't figured out how to wire the motors I think they should be wired like the attached photo (please confirm if I am wrong).. this is based on the pdf here

[Steve-m]

Hi

cant remember what parts i used for mine i will have a look in sunday when im back in workshop and let you know

Steev

[mchipser]

Thanks a bunch!!

[mchipser]

So i started taking mine apart tonight, hoping it was going to be an easy wire up.. well this one is using different steppers.. Mine has these installed..

Also for some odd reason the wiring color does not match what the diagrams show :(

[mchipser]

ok good news.. i think.. It looks like the 8 wires coming off of the stepper are already bundled together and only 4 wires are coming into the DB9 connection.. the other wires are the limit switches.. I think i might be able to finish wiring this thing up this weekend.. maybe..

Attachment 24426

[mchipser]

ok good news.. i think.. It looks like the 8 wires coming off of the stepper are already bundled together and only 4 wires are coming into the DB9 connection.. the other wires are the limit switches.. I think i might be able to finish wiring this thing up this weekend.. maybe..

Attachment 24426

Here is the wiring diagram I think it accurate based on the research.. hoping to start wiring it soon.. Don't judge the drawing :(

[mchipser]

Ok i'm at the final point, i think..

but I am a little confused, i'm a newbie to setting up my own controller..

The BoB I has (+5V, EN, DIR, and STEP) the Drivers has (Pull + / -, DIR + /-, and ENA + / -)

I know the BoB EN = ENA on the Driver, DIR = DIR + on the driver and STEP = Pull + on the driver.. but what do I do with the extra 5V on the BoB?

Thanks for the help!

[craynerd]

Hi guys,

Sorry for the lack of reply Steve. I just came on here to ask a question and saw your message.

I used the existing power supply. I didn’t need to rewire anything. I just chopped the wires (turned off of course!) and then used my multimeter to figure what voltage each of the lines were! I can’t remember what they were exactly but they were good enough for what I needed.

I have to say Steve that although I’ve taken on a few cnc projects I really am wading my way through murky waters! I can’t really help on the stepper wiring but I distinctly remember testing the wires (using s YouTube guide) to figure out which were the pairs. The motors work great for my needs!

Good luck with it, I’ll pop back on here but I’ve also just got your email so do email back if you need anything.

Cheers
Chris