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
