Sounds like you are moving in the right direction with this project. I for one will be watching with keen interest. If you need any assistance with pcb layouts or testing, let me know and I will gladly assist.
On 2014-11-22 05:10, el cringo wrote: > Hi, > i am working with Rene on this project. > For the next hardware version we are planning to support resolvers > (3-8Vpp ref, 1-12Vpp sin/cos) and encoders/gms (ttl / 1Vpp / 11µA) with > a single interface. > The current resolver only interface is a bit noisy (resolution: > 12-13bit/rev, accuracy: 9-10bit/rev after sw filtering) and does not > work well with non-floating signals. > On the driver side we try to get rid of the ttl and analog parts whith a > small controller for current / voltage measuring, pwm generation, break > release, temperature control, ... > > We hope to have it ready for the 31C3. > > Nico > > > What are you changing on the hardware? >> On 2014-11-21 13:06, Rene Hopf wrote: >>> IRAMX-drv-v2 as a driver board, and res with the stm32f4discovery. >>> The video is only at 160V. >>> If we met in Stuttgart, it is the same hardware, running at higher voltage, >>> and improved software. >>> I am currently developing new hardware. >>> >>> Rene >>> >>>> On 21 Nov 2014, at 09:39, Marius Liebenberg <mar...@mastercut.co.za> wrote: >>>> >>>> Hi Rene >>>> Very interesting work you have done there. Which one of the hardware >>>> options is used in the video demonstration? >>>> >>>> On 2014-11-21 03:56, Rene Hopf wrote: >>>>>> On 20 Nov 2014, at 19:14, andy pugh <bodge...@gmail.com> wrote: >>>>>> >>>>>> On 20 November 2014 17:56, Kirk Wallace <kwall...@wallacecompany.com> >>>>>> wrote: >>>>>>> I seem to recall, to get fast PWM, I had to use Timer1 and not use the >>>>>>> Arduino PWM library. I wonder if the resolver decoder might be improved >>>>>>> in a similar fashion? I haven't had the time to study Andy's code, but >>>>>>> it may already be optimized. >>>>>> It is all driven by interrupts and direct register writes, it doesn't >>>>>> use any Arduino libraries at all, not for PWM generation, not for >>>>>> analogue reading and not even for computing the arctan. >>>>>> (it uses an integer-only algorithm and a lookup table) >>>>>> >>>>>> http://wiki.linuxcnc.org/uploads/Resolver.pde >>>>> My servo amp has a very good resolver interface, featuring 10kHz >>>>> excitation with driver(8Vpp signal, to reduce noise), lowpass filter, and >>>>> 12 bit resolution. >>>>> included are eagle files, spice simulation, and code. >>>>> It could be used to make a converter to other interfaces, or you can just >>>>> use the whole project to drive your servos. >>>>> It has even got a hal implementation to configure things at runtime. >>>>> >>>>> https://github.com/rene-dev/stmbl >>>>> >>>>> Rene >>>>> >>>>> >>>>>> -- >>>>>> atp >>>>>> If you can't fix it, you don't own it. >>>>>> http://www.ifixit.com/Manifesto >>>>>> >>>>>> ------------------------------------------------------------------------------ >>>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>>>>> with Interactivity, Sharing, Native Excel Exports, App Integration & more >>>>>> Get technology previously reserved for billion-dollar corporations, FREE >>>>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>>>>> _______________________________________________ >>>>>> Emc-users mailing list >>>>>> Emc-users@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>>> ------------------------------------------------------------------------------ >>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>>>> with Interactivity, Sharing, Native Excel Exports, App Integration & more >>>>> Get technology previously reserved for billion-dollar corporations, FREE >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>>>> _______________________________________________ >>>>> Emc-users mailing list >>>>> Emc-users@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>>> >>>> -- >>>> >>>> Regards /Groete >>>> >>>> Marius D. Liebenberg >>>> +27 82 698 3251 >>>> +27 12 743 6064 >>>> QQ 1767394877 >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>>> with Interactivity, Sharing, Native Excel Exports, App Integration & more >>>> Get technology previously reserved for billion-dollar corporations, FREE >>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>>> _______________________________________________ >>>> Emc-users mailing list >>>> Emc-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> ------------------------------------------------------------------------------ >>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>> with Interactivity, Sharing, Native Excel Exports, App Integration & more >>> Get technology previously reserved for billion-dollar corporations, FREE >>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> > > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! Instantly Supercharge Your Business Reports and Dashboards > with Interactivity, Sharing, Native Excel Exports, App Integration & more > Get technology previously reserved for billion-dollar corporations, FREE > http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Regards /Groete Marius D. Liebenberg +27 82 698 3251 +27 12 743 6064 QQ 1767394877 ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
