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a question on microcontroller boards

Posted: Sat Apr 25, 2015 10:55 am
by stonewater
as part of reading thru these forums, there is mention of all other sorts of controller boards, azteeg, smoothie, etc. some are spoken of very highly, smoothieboard in particular. some of the forum members here are really up on some of the hardware and software ins and outs, I was particularly intriguend with 626pilots fsr based bed leveling.

seems if I want to go with more than 1 extruder I need to upgrade. if I want auto bed leveling , again an upgrade, 24 volt for everything, again an upgrade if I don't use the SSR mod for the ramps board.

so my question is twofold. first what are peoples recommends for a different microntroller? what do you look for in a piece of hardware? I know a few of you guys are engineers by trade, I am a mechanic and small green boards are not my strong suite. second how much difficulty is added to the software portion of the controller when adding another print head? things like indexing the print head to the same x,y,and z zero....


thanks in advance everyone!!

Tom C

Re: a question on microcontroller boards

Posted: Sat Apr 25, 2015 5:17 pm
by teoman
You can do all of the mentioned stuff on the rambo as well.

It supports 2 extruders, has some ios for the fsrs and by default you can run 24v for the bed. The bed we use has low resistance so it draws a lot of current at 24v so you either need to modify the software a bit or dial down the psu. (These are not the fault of the rambo.)

The problem people are having with it is:
1 it is not a fast processor
2 it is an arduino which means that for the noob writing software is easier but for some one who knows programming it has limitations.
3 there is only support for 2 extruders.

I think it is fit for purpose.

Re: a question on microcontroller boards

Posted: Thu May 21, 2015 11:18 am
by TFMike
teoman wrote:You can do all of the mentioned stuff on the rambo as well.

It supports 2 extruders, has some ios for the fsrs and by default you can run 24v for the bed. The bed we use has low resistance so it draws a lot of current at 24v so you either need to modify the software a bit or dial down the psu. (These are not the fault of the rambo.)
Can you go into more detail on the modifications needed for the software / backing off on the PSU?