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Hi where is a good place i could get some good pwm motor drivers and what are the most common used type?

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It is rare to get both the PWM and the drivers for the motors in the same package. If you just need the chips to drive the motors, then it depends on how big of motor? So, do you need to generate PWM, or, do you need driver chips for the motors that take PWM? What current draw do you expect from your motors? DLC > Hi where is a good place i could get some good pwm motor drivers and > what are the most common used type? > ============================================================================ * Dennis Clark Aristocrat at heart www.verinet.com/~dlc * * Shannon Moyes Clark Resident historian * * Be well, do good work, and stay in touch -- Garrison Keillor * ============================================================================

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i only need the the chips that generate the pwm --- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> wrote: > It is rare to get both the PWM and the drivers for the motors in the > same package. If you just need the chips to drive the motors, then it > depends on how big of motor? So, do you need to generate PWM, or, do > you need driver chips for the motors that take PWM? What current draw > do you expect from your motors? > > DLC > > > Hi where is a good place i could get some good pwm motor drivers and > > what are the most common used type? > > > > > > > > > > > > > > > > ====================================================================== ====== > * Dennis Clark Aristocrat at heart dlc@v... www.verinet.com/~dlc * > * Shannon Moyes Clark Resident historian * > * Be well, do good work, and stay in touch -- Garrison Keillor * > ====================================================================== ======

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Okay, one of us is missing something... what's wrong with using the PULSOUT command? That's the easy way to directly control a servo, one I/O line per. BTW, anybody have any good sources for the current requirements of servos? At 08:51 PM 3/30/01 +0000, Classified wrote: >i only need the the chips that generate the pwm > >--- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> wrote: > > It is rare to get both the PWM and the drivers for the motors in >the > > same package. If you just need the chips to drive the motors, then >it > > depends on how big of motor? So, do you need to generate PWM, or, >do > > you need driver chips for the motors that take PWM? What current >draw > > do you expect from your motors? > > > > DLC > > > > > Hi where is a good place i could get some good pwm motor drivers >and > > > what are the most common used type? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >====================================================================== >====== > > * Dennis Clark Aristocrat at heart dlc@v... www.verinet.com/~dlc >* > > * Shannon Moyes Clark Resident >historian * > > * Be well, do good work, and stay in touch -- Garrison >Keillor * > > >====================================================================== >======

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>Okay, one of us is missing something... what's wrong with using the PULSOUT >command? That's the easy way to directly control a servo, one I/O line per. > >BTW, anybody have any good sources for the current requirements of servos? Totally. I use pulseout for servos all the time, here's some example code built on NetMedia's servo example: http://fargo.itp.tsoa.nyu.edu/%7Etigoe/pcomp/examples/servo.shtml -- -- Tom Igoe

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they are not talking about servos here. the subject is PWM for driving gear motors. --- Fringe Ryder <> wrote: > Okay, one of us is missing something... what's wrong with using the > PULSOUT > command? That's the easy way to directly control a servo, one I/O > line per. > > BTW, anybody have any good sources for the current requirements of > servos? > > At 08:51 PM 3/30/01 +0000, Classified wrote: > >i only need the the chips that generate the pwm > > > >--- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> wrote: > > > It is rare to get both the PWM and the drivers for the motors > in > >the > > > same package. If you just need the chips to drive the motors, > then > >it > > > depends on how big of motor? So, do you need to generate PWM, > or, > >do > > > you need driver chips for the motors that take PWM? What current > >draw > > > do you expect from your motors? > > > > > > DLC > > > > > > > Hi where is a good place i could get some good pwm motor > drivers > >and > > > > what are the most common used type? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >====================================================================== > >====== > > > * Dennis Clark Aristocrat at heart dlc@v... > www.verinet.com/~dlc > >* > > > * Shannon Moyes Clark Resident > >historian * > > > * Be well, do good work, and stay in touch -- Garrison > >Keillor * > > > > >====================================================================== > >====== > > > > > > > > > > > > ------------------------ Yahoo! Groups Sponsor > > ===== Tony Brenke North Tacoma, WA __________________________________________________

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http://www.dalsemi.com/news/features/2000/1050.html I2C device that makes the PWM off board of the micro. Programmable Pulse Width Modulator The DS1050 generates a square wave output in standard frequencies of 1, 5, and 10 kHz, with a duty cycle variable from 0% to 100% in 3% steps. the only place I have found to order them had a $50 min. if you find one with out that then let me know. I want some of these chips my self. --- Classified <> wrote: > i only need the the chips that generate the pwm > > > --- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> wrote: > > It is rare to get both the PWM and the drivers for the motors in > the > > same package. If you just need the chips to drive the motors, then > > it > > depends on how big of motor? So, do you need to generate PWM, or, > do > > you need driver chips for the motors that take PWM? What current > draw > > do you expect from your motors? > > > > DLC > > > > > Hi where is a good place i could get some good pwm motor drivers > and > > > what are the most common used type? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ====================================================================== > ====== > > * Dennis Clark Aristocrat at heart dlc@v... www.verinet.com/~dlc > > * > > * Shannon Moyes Clark Resident > historian * > > * Be well, do good work, and stay in touch -- Garrison > Keillor * > > > ====================================================================== > ====== > ------------------------ Yahoo! Groups Sponsor > > ===== Tony Brenke North Tacoma, WA __________________________________________________

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I would be interested in such a chip too... How about making one out of a 555 IC? Would that be too unreliable? I remember seeing a PWM circuit using 555 somewhere on the web... Sincerely, Burak Uzman --- In basicx@y..., Tony Brenke <trbrenke@y...> wrote: > http://www.dalsemi.com/news/features/2000/1050.html > I2C device that makes the PWM off board of the micro. > > Programmable Pulse Width Modulator > The DS1050 generates a square wave output in standard frequencies of 1, > 5, and 10 kHz, with a duty cycle variable from 0% to 100% in 3% steps. > the only place I have found to order them had a $50 min. > if you find one with out that then let me know. > > I want some of these chips my self. > > --- Classified <kj62@y...> wrote: > > i only need the the chips that generate the pwm > > > > > > > > > > --- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> wrote: > > > It is rare to get both the PWM and the drivers for the motors in > > the > > > same package. If you just need the chips to drive the motors, then > > > > it > > > depends on how big of motor? So, do you need to generate PWM, or, > > do > > > you need driver chips for the motors that take PWM? What current > > draw > > > do you expect from your motors? > > > > > > DLC > > > > > > > Hi where is a good place i could get some good pwm motor drivers > > and > > > > what are the most common used type? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ====================================================================== > > ====== > > > * Dennis Clark Aristocrat at heart dlc@v... www.verinet.com/~dlc > > > > * > > > * Shannon Moyes Clark Resident > > historian * > > > * Be well, do good work, and stay in touch -- Garrison > > Keillor * > > > > > > ====================================================================== > > ====== > > > > > > ------------------------ Yahoo! Groups Sponsor > > > > > > > > > > > > ===== > Tony Brenke > North Tacoma, WA > > __________________________________________________

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there are many ways to make PWM. using the chip below (8 pin dip) is a much smaller solution then I have found any place else. I did find a source for "samlpes" they have a list on the web site for distrubetures. I sent a message to the one in arazona for 2 samples. I will let you all know if they show up. --- wrote: > > I would be interested in such a chip too... > > How about making one out of a 555 IC? Would that be too unreliable? > I remember seeing a PWM circuit using 555 somewhere on the web... > > Sincerely, > > Burak Uzman > > --- In basicx@y..., Tony Brenke <trbrenke@y...> wrote: > > http://www.dalsemi.com/news/features/2000/1050.html > > I2C device that makes the PWM off board of the micro. > > > > Programmable Pulse Width Modulator > > The DS1050 generates a square wave output in standard frequencies > of 1, > > 5, and 10 kHz, with a duty cycle variable from 0% to 100% in 3% > steps. > > > > > > the only place I have found to order them had a $50 min. > > if you find one with out that then let me know. > > > > I want some of these chips my self. > > > > > > > > --- Classified <kj62@y...> wrote: > > > i only need the the chips that generate the pwm > > > > > > > > > > > > > > > --- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> > wrote: > > > > It is rare to get both the PWM and the drivers for the motors > > in > > > the > > > > same package. If you just need the chips to drive the motors, > then > > > > > > it > > > > depends on how big of motor? So, do you need to generate PWM, > or, > > > do > > > > you need driver chips for the motors that take PWM? What > current > > > draw > > > > do you expect from your motors? > > > > > > > > DLC > > > > > > > > > Hi where is a good place i could get some good pwm motor > drivers > > > and > > > > > what are the most common used type? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ====================================================================== > > > ====== > > > > * Dennis Clark Aristocrat at heart dlc@v... > www.verinet.com/~dlc > > > > > > * > > > > * Shannon Moyes Clark Resident > > > historian * > > > > * Be well, do good work, and stay in touch -- Garrison > > > Keillor * > > > > > > > > > > ====================================================================== > > > ====== > > > > > > > > > ------------------------ Yahoo! Groups Sponsor > > > > > > > > > > > > > > > > > > > > > > > > ===== > > Tony Brenke > > North Tacoma, WA > > > > __________________________________________________ > > > > ------------------------ Yahoo! Groups Sponsor > > ===== Tony Brenke North Tacoma, WA __________________________________________________

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I understand what you mean. I got to the point where I coded my own chip to do it. On my web page (notice I say that a lot?) I've got a PIC 12C508 project that creates a PWM chip you talk to at 9600 baud where you get 128 steps at 1KHz PWM, The reason I don't give full 256 steps is that with the MSB set bits 0 and 1 set the direction bits latched on the PIC that work with the L293/L298/754410 chips. I use these chips to drive the HVW Tech L298 motor driver board on my SpeedRacer robot via a Stamp II - A BX24 can drive them too using the COM3 type serial port that allows you to change pins for serial to any output pin. Check it out on http://www.verinet.com/~dlc/botlinks.htm and bonk on the "serial PWM chip" link. have fun, DLC Classified wrote: > > i only need the the chips that generate the pwm > > --- In basicx@y..., Dennis or Shannon Moyes Clark <dlc@v...> wrote: > > It is rare to get both the PWM and the drivers for the motors in > the > > same package. If you just need the chips to drive the motors, then > it > > depends on how big of motor? So, do you need to generate PWM, or, > do > > you need driver chips for the motors that take PWM? What current > draw > > do you expect from your motors? > > > > DLC > > > > > Hi where is a good place i could get some good pwm motor drivers > and > > > what are the most common used type? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ====================================================================== > ====== > > * Dennis Clark Aristocrat at heart dlc@v... www.verinet.com/~dlc > * > > * Shannon Moyes Clark Resident > historian * > > * Be well, do good work, and stay in touch -- Garrison > Keillor * > > > ====================================================================== > ====== -- --------------------------------------------------------------------- * Dennis Clark Mechanical Engineering Behavior Based Robotics * * www.verinet.com/~dlc Colorado State University * ---------------------------------------------------------------------

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> ... DS1050 ... the only place I have found to order them had a $50 min... Dallas Semiconductor will sell any small quantity of any part they make to anyone directly. www.dalsemi.com Tom Becker --... ...-- The RighTime Clock Company, Inc. Cape Coral, Florida USA www.RighTime.com

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> [Dallas Semiconductor] distributor in Washington is not web enabled and the ones in > other "areas" can't send them to me... Huh? Try this: http://www.dalsemi.com/sales/credit_card.html Dallas ships small orders directly from Dallas [actually Addison], Texas. Distributors are not involved. Tom Becker --... ...-- The RighTime Clock Company, Inc. Cape Coral, Florida USA www.RighTime.com

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I have a module that gives me the 1ms X-10 120KHz bursts from the powerline. This is an AC signal that is about 7.0V peak-to-peak. I need a circuit to demodulate this and give me a 0-5V pulse. --- The BX24-AHT All Housecode Transceiver is at: http://www.geocities.com/dorothy1801/

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