+ThantiK +Stephanie S +Peter van der Walt if you'd like the opportunity to criticize, now would be ideal :)
Ray Kholodovsky
Partagé en mode public -Just finished routing my Cohesion3D ReMix (Powered by Smoothie) board. Man this is tight. Down to 8 mil traces with 6 mil clearance in between them. I still have redo the last 4 stepper drivers per the new routing pattern you see in the first 2, and spend an inordinate amount of time seeing if I can squeeze in a servo header for a leveling probe, but other than that, it's time for some community review! Please take a look, the eagle files are in my github, and let me know what you think: https://github.com/raykholo/Smoothiebrainz/
I also added some new features: there is an onboard thermistor near the MOSFETs to monitor if they get too hot (keep in mind these things will burn you long before they exceed the temperature they are rated for) and a number of responses can be scripted. Remind you of anything? High end PC motherboards perhaps?
There's also footprints for flyback diodes so you can quickly install these if you need to run electromechanical devices (like relays or the pumps and solenoids you'd find on a Pick n Place) without having to get "creative" with your diode installation.
Finally, I did manage to squeeze in that 6th MOSFET and this one is selectable between your motor voltage and 5v, so you can run a larger variety of small accessories from it.
I'd keep going, but with 6 stepper drivers and MOSFETs along with WiFi in a 100mm square board, there's not even space for air in between the components :)
I also added some new features: there is an onboard thermistor near the MOSFETs to monitor if they get too hot (keep in mind these things will burn you long before they exceed the temperature they are rated for) and a number of responses can be scripted. Remind you of anything? High end PC motherboards perhaps?
There's also footprints for flyback diodes so you can quickly install these if you need to run electromechanical devices (like relays or the pumps and solenoids you'd find on a Pick n Place) without having to get "creative" with your diode installation.
Finally, I did manage to squeeze in that 6th MOSFET and this one is selectable between your motor voltage and 5v, so you can run a larger variety of small accessories from it.
I'd keep going, but with 6 stepper drivers and MOSFETs along with WiFi in a 100mm square board, there's not even space for air in between the components :)
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Can't wait to see it populated.
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+Josh Rhodes what I do is print it out, glue it to cardboard, punch the holes out with a pin, and place all the components to test for fit. I may learn that a capacitor is too close to a header or something like that. Then I order, and a few weeks later we have a real one :)
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holy crap that's beautiful. I can't believe you got all of that onto a 2 layer board.
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Could you do a pdf or picture of the schematics?
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Thanks Ross. And it still needs a servo header by some means.
Steph I sent you an image on hangouts.
Steph I sent you an image on hangouts.
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This is amazing Ray!
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Thanks Anthony! I really think the 6 drivers will be helpful for PnP. Imagine your typical XYZ, 2 rotation heads, and then the additional axis to toggle mechanical feeders or something like that.
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Yes exactly, kudos for bringing this one to life!
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Just added the servo connector. This board is now officially maxed out, with not a single I/O pin available on the microcontroller.
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You forgot something very important!!!!
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Let's see. Attribution to the derivatives, the name, programming pads on the bottom?
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Lol the logo :P don't know if there is room for it with all that awesomeness getting in the way
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Well, I already added the name in plain text... I'll have to learn how to add vector art to the board. You're right, no space for anything besides components :(
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+Ray Kholodovsky please put me on the list of your prototype testers! ;-) This is really great work!
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I think I see a trace that isn't a multiple of a 45 degree angle!
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Ray Kholodovsky
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+ThantiK You'll find 40 of them if you look under the SMD pads. But everything else has been fixed. Board is done, will be ordering tomorrow. It's on github if anyone wants to criticize.
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Ray Kholodovsky
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+Alex Skoruppa absolutely! Your machine(s) are awesome and I'd love to see one of these boards driving them. I was actually amazed that you managed to fit an entire 24v psu and smoothieboard in the base of your delta. This board is smaller :)
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