dambacher-retrofit.de <i...@...> writes: > > Hi Rick > > Do you have a tachogenerator or an resolver? > > a tachogenerator is like a dynamo giving a sinus voltage/current wich is > proportional to the revolutions. You can use a rectifier circuit and measuere > the effective voltage via a/d > > A resolver is tricky, you need to excite it with a sinus signal of a given > frequency and it gives back two sinus signals the max of the amplitude is > proportional to the angle position (see wikipedia->resolver). You have to > convert the signal at the peak of the excite sinus (using a triggering signal > from the sinus generator circuit), the arctan of the amplitude gives the > angle. > you could use commecial circuits but not at that price I think: > http://www.maccon.de/fileadmin/FTPROOT/2785500.pdf > > bye > Ulf >
No, neither. I have made a few tachometers using Atmel microcontrollers. The sensor, either a hall effect or optical, just sends pulses and the microcontroller counts them up and handles the display. Another one I made had counter chips and the microcontroller basically just handled the display part. I would like emc2 to do the counting and display. It seems simple enough, I just haven't found anything in the docs that describes it. Worst case, I could just take one of my existing tachs and have the serial output sent into ttyS00 and then a standalone program would handle the display, but can't emc2 handle it ? Rick ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
