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Yikes I'm in this way over my head! I'm trying to control 10 six wire stepper motors that will all be doing the same thing at the same time. I have the motors and some uln2803a IC's. I know I need some relays (DPDT?) then I will need to do some soldering (I have a Hakko) I'm sure someone can recommend a book that will help me with the wiring diagram, and then I will have to get some kind of program together to get thing "turning" If you have any positive input let me know. btw- what I am trying to do is build and wrist watch winder for my automatic wrist watches. Ideally the motor will rotate cw/ccw about 270 deg. in each direction to simulate the movement of the watch being worn on the wrist, I would like to have this happen for about 10 hours each day, 7 days a week. thanks in advance for any help you may offer. I almost forgot I also have the bx-24 development kit.

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I think I would simplfy the whole thing down to a single motor that turns a wood dowel that all the watches are attached to. I am not quite sure why there is a need for a relay in the scheme of things... If you are really set of ten separate stepper motors then I would parallel all the motor drivers (IR hexfets) and run all ten motors off the same four control signals rather then trying to control ten separate motors individually... best regards, Steve Thatche r >--- Original Message --- >From: "Robin <>" <> >To: >Date: 2/16/03 10:03:18 AM >Yikes I'm in this way over my head! I'm trying to control 10 six >wire stepper motors that will all be doing the same thing at the same >time. I have the motors and some uln2803a IC's. I know I need some >relays (DPDT?) then I will need to do some soldering (I have a Hakko) >I'm sure someone can recommend a book that will help me with the >wiring diagram, and then I will have to get some kind of program >together to get thing "turning" >If you have any positive input let me know. >btw- what I am trying to do is build and wrist watch winder for my >automatic wrist watches. Ideally the motor will rotate cw/ccw about >270 deg. in each direction to simulate the movement of the watch >being worn on the wrist, I would like to have this happen for about >10 hours each day, 7 days a week. >thanks in advance for any help you may offer. >I almost forgot I also have the bx-24 development kit.

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have you looked at the ft609? http://www.ferrettronics.com/product609.shtml you just send serial commands to it. you can have many of them on the same serial line. use the ft649 and you can have even more. ----- Original Message ----- From: <> To: <> Sent: Sunday, February 16, 2003 10:03 AM Subject: [BasicX] stepper motors and bx-24 chip > Yikes I'm in this way over my head! I'm trying to control 10 six > wire stepper motors that will all be doing the same thing at the same > time. I have the motors and some uln2803a IC's. I know I need some > relays (DPDT?) then I will need to do some soldering (I have a Hakko) > I'm sure someone can recommend a book that will help me with the > wiring diagram, and then I will have to get some kind of program > together to get thing "turning" > If you have any positive input let me know. > btw- what I am trying to do is build and wrist watch winder for my > automatic wrist watches. Ideally the motor will rotate cw/ccw about > 270 deg. in each direction to simulate the movement of the watch > being worn on the wrist, I would like to have this happen for about > 10 hours each day, 7 days a week. > thanks in advance for any help you may offer. > I almost forgot I also have the bx-24 development kit.

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can't help you in the software development, but here... you say you have 6 motors, but all doing the same thing? if this is so, you can hook them all up together, (ie all green wires together, all reds, etc) and then have 6 wires. you would hook the grounds to the power source. then attach transistors rather than relays, because transistors react much faster. but remember, you need ones that can handle the load. Thanks, -Jack c CREP Inc www.CREPinc.com ---------------------------------

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