DIY Electronics vs PNP vs self sourcing


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    Default DIY Electronics vs PNP vs self sourcing

    I am considering the CNCRP 4x8 Pro or a machine with a 5 foot gantry with a 4 foot length and am trying to determine my options for the Electronics:

    I have 25 years experience assembling computers, networks and working on large format printers so putting this together should not be an issue, but this is my first time putting something like this together and I have a small business that will depend upon its operation.

    My options are the PNP that is ready to go, the DIY kit or just self sourcing the parts.

    • What are the differences between the PNP parts and the DIY parts?
    • What will I gain or lose by choosing one vs the other?
    • What kind of problems can I expect to have with the DIY kit?
    • If I try to self source the parts am I really going to save some money?
    • Are there parts I could use that would be better than those in the DIY kit or equivalent but lower cost?
    • Does anyone have a list of vendors and parts that might be a good alternative?
    • If I self source the parts is there a reason I should not go with the Leadshine MX4660 drive


    I really would like to save as much money on this project as possible but not sacrifice the reliability of the machine.

    Thanks for the input!

    BG

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    Default Re: DIY Electronics vs PNP vs self sourcing

    If you can afford it I would highly recommend the PNP option. I built my first CNC as a kit and was comfortable putting the Pro together, but decided to get the PNP and I'm very happy I did. The quality is top notch, the stuff just flat works out of the box, and any questions I had were answered quickly by their super support. All I had to do was follow the instructions, hook up the wires, and everything came up working and calibrated ( they have pre-built profiles ). Took me maybe an hour vs lots and lots of hours and I have support.



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    Default Re: DIY Electronics vs PNP vs self sourcing

    What are the differences between the PNP parts and the DIY parts?
    The P&P uses a custom breakout board, and I think Leadshine digital drives. It also comes with an ethernet Smooth Steppper (ESS)
    The DIY kit uses Gecko drives with a PMDX breakout board.

    What will I gain or lose by choosing one vs the other?
    You save a lot of time with the P&P kit. It can take a considerable amount of time to put a control box together yourself.
    You lose flexibility with the P&P system. With the DIY it's easier to add features.


    What kind of problems can I expect to have with the DIY kit?
    Depends on your abilities.


    If I try to self source the parts am I really going to save some money?
    You can save some money sourcing everything yourself, or get better components for a similar cost, when compared to the DIY Kit.


    Are there parts I could use that would be better than those in the DIY kit or equivalent but lower cost?
    With DIY CNC, you generally get what you pay for. You can probably get better compnents for the same cost, or get similar components for less money.


    If I self source the parts is there a reason I should not go with the Leadshine MX4660 drive
    A couple reasons. One, if yougo with 7 amp Nema 34 motors, the MX4660 will not give you full power. And you are limited to 60V. Individual drives will let you run higher voltages, which equals higher speeds.

    Second, going with a good breakout board will give you a lot more inputs and outputs, if you need them.

    Gerry

    UCCNC 2017 Screenset
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    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
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    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Default Re: DIY Electronics vs PNP vs self sourcing

    Hard question to answer since it is really a subjective thing that is up to you. But for reference, I'm pretty handy with those types of things as well. Knowing what I know (and realizing what I don't!), I appreciate that there are tons of little things that have to be figured out as you go, problems to find a solution for as you build, etc. That's why I chose their setup. I have very limited shop time and I would rather use that time making stuff rather than building the machine. Hard to make that decision as I love to learn and tinker and enjoy the rewards of figuring things out and making them work...hopefully! And I am just a hobbyist, so that's a different perspective too. I have no regrets. Actually, reading some of the posts about folks building their own make me darn glad I didn't try it!

    I will admit that I am still not thrilled with the ESS. It seems a little flaky. The other day, I got the dreads "Run out of data" message just when I was running my PARK script! But then a couple of days ago, it ran an engraving code for three hours perfectly! Go figure.

    Tony



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    Default Re: DIY Electronics vs PNP vs self sourcing

    I would highly recommend a UC300ETH and UB1 breakout board over the ESS. This works with Mach3 as well, but also gives you the option to use UCCNC, which is better than Mach3 imo.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Default Re: DIY Electronics vs PNP vs self sourcing

    Looks interesting. How hard would that be to hook up to a CNCRP setup?



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    Default Re: DIY Electronics vs PNP vs self sourcing

    Depends on how much you know about electronics. You'd need to get rid of the breakout boards from CNCRP, and rewire everything to the UB1.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Default Re: DIY Electronics vs PNP vs self sourcing

    Im a fan of the DIY. I did my research and decide on what components I Like such as motors, controllers , drives, software etc. I Have no problem soldering and finding my way around a schematic. I too like the UB1 even though I dont own one. A nice feature it has is led's for everything, that will help you troubleshoot very easily. When I built my controls I did one thing at a time and tested it completely and in software and kept going till done.

    Last edited by sparkness; 01-31-2018 at 08:11 PM.


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    Quote Originally Posted by sparkness View Post
    Im a fan of the DIY. I did my research and decide on what components I Like such as motors, controllers , drives, software etc. I Have no problem soldering and finding my way around a schematic. I too like the UB1 even though I dont own one. A nice feature it has is led's for everything, that will help you troubleshoot very easily. When I built my controls I did one thing at a time and tested it completely and in software and kept going till done.
    Hey what steppers did you go with? I’m looking at the Leadshine 86cm85 with dm870 drivers. Any input would be appreciated thanks



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    Default Re: DIY Electronics vs PNP vs self sourcing

    On my Benchtop PRO 2436 I used Leadhine 86HS45D and Leadhine MX4660



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    Quote Originally Posted by sparkness View Post
    On my Benchtop PRO 2436 I used Leadhine 86HS45D and Leadhine MX4660
    Nice! I was actually originally looking at the 86cm45 with the 4660 basically same as you, can I ask what speed your getting out of them? Are you happy with your choice and what voltage are you running? Thanks



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    Default

    I just realized your talking about the bench top machine with ball screws I think that’s quite a bit different application.



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DIY Electronics vs PNP vs self sourcing

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