I believe this is a good path, ST32 line have a lot of potention while being affordable and price competitive for mass market... And Nucleo boards are definitely "arduino" in ARM world :-)by parasole - Next Wave Electronics Working Group
QuoteWurstnase Are they? Yes, you have to look to the particular CPU datasheet instead of Nucleo board which might be incorrect about this.... Datasheet on first page tell us " Up to 77 5 V-tolerant I/Os", then note 4 after table 8 for pins definition explains about FT pins, FT = 5 V tolerant except when in analog mode or oscillator mode (for PC14, PC15, PH0 and PH1). Check reference manualby parasole - Next Wave Electronics Working Group
Wow Wurstnase, very good idea, I have this shield, the intention was to modify it for Due and use in a small cnc mill, but using with Nucleo is perfect, good side of ST32 being 5v tolerant... Did you post your port somewhere (github)? I would be interested to have a look and try it when my printer will be ready...by parasole - Next Wave Electronics Working Group
QuoteVDX ... I'm using STM32F4Discovery boards with proprietary firmware and software for laser engraving, CNC-milling and as a sort of XY-servo-laserscanner. That is interesting, any chance to share the project or you want to use it commercially?by parasole - Next Wave Electronics Working Group
In my opinion the value of this board is ported firmware to ST32 with added wireless functionality, every thing else is not that much important, all stock... This is evaluation board, i.e. reference design and being reference the cost is very competitive as I stated in my first post... That means any one wanted to use ST32 based controller as myself have a drop in solution. For the ones who areby parasole - Next Wave Electronics Working Group
If taking the board as is then yes, you stick to what it already have... 12V for steppers and 24 for Bed... Drivers are 16x only but with 3A rms and 7A peak, current control with adaptive decay, just check the data sheet for L6474... However the most interesting for me is the firmware, first of all one more port to ARM M4 32 bit processor which is not expensive, and second, they did add web seby parasole - Next Wave Electronics Working Group
Interesting, no one expressed his opinion :-) I did not find yet how to attach the pictures beside the url, just click to the links below for more information... I do have couple of ST32F4xx development boards, will try them some where in the autumn, after building my printer :-)by parasole - Next Wave Electronics Working Group
Hi there, Not sure if this was not already posted, any one know about STM solution for 3D printers? Looks like they did quite a good job in adapting Marlin for their F4x series, and even their evaluation board is not that expensive considering the capabilities they deploy on this board... Key features & Benefits • Adaptable to any 3D printer mechanics • Based on open-source Marlin firmwby parasole - Next Wave Electronics Working Group
Quotedc42 I am offering constructive criticism, because RAMPS has been stuck in a rut for years and badly needs to be improved. I don't knock other people's work when it is good. Poor electronic design really irritates me. But when a design has more than one well-known flaw, yet none of them are addressed when the design is revised, that is IMO inexcusable. The SMART tag on RAMPS 1.4.1 is a totby parasole - RAMPS Electronics