Thread: Arduino CNC Shield Power Routing
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27-06-2017 #21
I can believe that - most of the motion control boards have the same limitation. The basic electronics is 5V and won't handle more than that on any digital input. With the Arduino, the digital input pins go direct to the Atmega chip and that is rated at 5V on all inputs. However, the power supply via the Vin pin should be happy with 12V as this goes to a voltage regulator to give 5V for the rest of the board. In fact, if you are not supplying 5V via the USB connector, the recommendation is to run the Arduino on at least 7V as the regulator needs a bit of headroom to work correctly.
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27-06-2017 #22
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27-06-2017 #23
Yeah, the most likely reason is the variable input. While the RAMPS is designed specifically for 12V without modding, this board takes 12-36V so it's not a simple matter stepping down the voltage for the Arduino. Saying that... I've previously bought a whole load of really cheap £0.99 tiny little boards that take 5636V and transforms it into 5V then through a USB socket. These boards are about the size of a postage stamp and do the job. So actually building one into the board wouldn't cost much...
I think therfore that it's just not been upgraded as both that and SD and screen support should be decently simple for someone with the know-how.
I really love the open source market in some ways, I'm just not able to contribute to that in any meaningful way... yet. I try to think outside the box and take different approaches with my machines for the sake of expanding the database and share that information where I can though :)
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Last edited by Desertboy; 28-06-2017 at 10:54 AM.
http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm
If you didn't buy it from China the company you bought it from did ;)
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01-07-2017 #25
On the software side had you looked at Estlcam It is primarily a hobbyist CAM package with 2D and 3D machining including carving lots of functionality and apparently it can control the CNC directly through grbl. We've been using it for a year now in an educational setting.Its not perfect but it's amazing value for money £43.00 and it's much better than the shapeoko stuff like easel. It definitely doesn't have all the fusion 360 stuff but its free to try and would offer a simpler workflow.
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These look cool
http://wiki.protoneer.co.nz/Raspberry_Pi_CNC
Pair with a touchscreen lcd and you have an all in one solution for a desktop mill.
Not worth it for me though as I have a spare dell laptop which has a flip touchscreen to work as a pseudo tablet which should be ideal to build into the machine and gives me a much bigger screen to work on and a very neat solution and if I do need the proper keyboard and I flip it back round.http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm
If you didn't buy it from China the company you bought it from did ;)
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