Hi Roland, The Gecko drives only require 3ma -4ma to drive the optos
Cheers, Peter On 01-Oct-15 4:01 PM, Roland Jollivet wrote: > Ok, I over-reacted.. > The parallel port has always been designed to sink, not source. So while I > can get 5V from the USB port or the CNC machine, I can't get 15mA from the > port is it's not there. If you're making a machine, having 5V on hand is no > more difficult than your stepper supply voltage. > > But I suppose recent ports have a higher drive capacity, and opto's run off > lower current now, and Gecko have well tested that it all works ;-) > > Regards > Roland > > > On 30 September 2015 at 20:26, Belli Button <[email protected]> wrote: > >> Because there is no 5V on the parallel port? >> >> Using a common 0V allows the Gecko to connect directly to the LPT port, >> something that is simply not possible with the Chinese drives or others >> that >> use 5V common. >> Or I didn't understand your question... >> >> >> >> " I got a G203V in the post today, and am confused. >> >> Why on earth do Gecko drives use a common ground on the inputs, especially >> if they're targetting the parallel port market? >> Even the ching drive referred to in this discussion has it the right way, a >> common Vcc. >> >> Regards >> Roland" >> >> >> >> >> On 30 September 2015 at 17:41, Jon Elson <[email protected]> wrote: >> >>> >>>> On Wed, Sep 30, 2015 at 10:58 AM, Dave Cole >>>> <[email protected]> >>> wrote: >>>> >>>> >>>>> Hey, did I see that you are no longer a Washingtonian? Does that >> mean >>>>> that you now live in the land of the left hand (MI) ? ;-) My >>>>> daughter lives in Chevy Chase and I continually hear about the cost >>>>> of this and that. For her Washington is still great, but not as >>>>> great as it was when she first moved there. >>>>> >>>>> >>> I grew up in Washington DC. Haven't really missed it too much since I >>> left. it WAS cool, however, when visiting. >>> I'd take a strange turn off the beltway when it got backed up, and >>> start driving on side roads, and my wife would say "Oh, we're lost, >>> you need to stop and ask somebody", and I'd say "No, actually, I know >>> EXACTLY where I am, and we will pop out on Georgia avenue in 3 >>> blocks", even though it looked like we were in the sticks. >>> >>> Also, going into a Safeway store in Silver Spring, I had been in there >>> many times with my Mom 40 years ago, and knowing pretty much where >>> everything was, as they had changed NOTHING in that store in the >>> meanwhile! >>> >>> But, if you think Washington is bad, check out the bay area. I used >>> to go there for experiments, and try to make a round trip down from >>> Berkeley to San Jose, Santa Clara, Mountain View and Oakland to hit >>> all the electronic surplus places. Quite a drive! >>> >>> Jon >>> >>> >>> >>> >>> ---------------------------------------------------------------------- >>> -------- _______________________________________________ >>> Emc-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >> >> ---------------------------------------------------------------------------- >> -- >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
