On Sunday 16 February 2014 12:22:12 N. Christopher Perry did opine: > I've developed a circuit just for this application: > https://dl.dropboxusercontent.com/u/34705319/Spindle Drive Interface > Schematic.pdf > > It does a fairly decent job. It gets within ~0.5% of full scale on both > ends and has a linearity error of ~0.5%. In addition it has a couple > of opto isolated control/feedback signals for spindle enable and a 'at > speed' indication. > > Here are the Eagle files for it if you'd like to crib them: > https://www.dropbox.com/sh/solnou6bjixmmp7/3b3ChzN0Wk > > I've even got a few bare PCBs and a couple of populated ones if you'd > like to buy one. > > N. Christopher Perry
Unfortunately, the files, while they can be downloaded by chromium but not FF27, the .pdf aren't not open able by acroread, bad .pdf. Eagle says the .sch is not an eagle file. > On 2014-Feb-16, at 00:07, Jared Turner wrote: > > I'm still working with trying to get programatic speed control from my > > BBB. My driver requires a 0-10v signal or a 10k pot to control speed. > > Had to take a break from this - schoolwork is kinda inconvenient at > > times - found out my digital pot can't work for 10v signals... so I'm > > thinking about implementing an op-amp and ramping up the output of > > the BBB to 0-10v. My other option is to connect a servo/stepper motor > > to a pot which seems a little silly. I'm just wondering which is > > easier... > > > > ---------------------------------------------------------------------- > > -------- Android apps run on BlackBerry 10 > > Introducing the new BlackBerry 10.2.1 Runtime for Android apps. > > Now with support for Jelly Bean, Bluetooth, Mapview and more. > > Get your Android app in front of a whole new audience. Start now. > > http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg. > > clktrk _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------ > ------ Android apps run on BlackBerry 10 > Introducing the new BlackBerry 10.2.1 Runtime for Android apps. > Now with support for Jelly Bean, Bluetooth, Mapview and more. > Get your Android app in front of a whole new audience. Start now. > http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.cl > ktrk _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
