Hello, May I know what "Try using 'vertical math'" is. thanks ramana -----Original Message----- From: Bob Ammerman [mailto:RAMMERMAN@PRODIGY.NET] Sent: Wednesday, August 23, 2000 5:36 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC]: 10 PWM outputs on PIC16F874 ----- Original Message ----- From: Ramana To: Sent: Wednesday, August 23, 2000 7:47 AM Subject: Re: [PIC]: 10 PWM outputs on PIC16F874 > Hi, I need to control 10 DC motors using DC Voltage control. Can this be > done in Software PWM Only. Any Ideas. Sure. Try using 'vertical math'. > Another point is that the motors will all be operated in 4 discrete > steps > off, low, medium, high. If this is so does it simplify things. This means you can probably use a relatively poor resolution in your PWM. I would _not_ expect to get away with a resolution of just 4 equal-sized intervals however. > What frequency of PWM would be good for DC Motor control The motors are > small motors taking about 100ma at 13.6 Volts DC The lowest you can get away with given the fact that you want to bit bang ten of these. > rgds > ramana > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics