stepper motor
hterrolle
Posts: 30
hi,
i wanted to buy a stepper motor today, but the seller said that i should use a card to control it. the motor is 4.5v and it is just of testing purpose before going farther.
i find somme information reading few post searching for "motor".
As i anderstoud the javelin can manage Stepper unsing the PWD class. I read the document http://www.parallax.com/Portals/0/Downloads/docs/prod/motors/Stepper_Motor_27964.pdf.
the document explain how to connect the motor an an ULN2803, but not on the javelin.
Of course my mother language is not english neither american so i got little problem to anderstand the documentation.
It is possible to have an example, picture i could see, for a stepper connection on the javelin.
By the way, there is a block Vm with 6 broch, in the doc this should be used for servo. Could i have more detail how to use it.
thanks.
PS : It is not easy for a non electronicien to got use with all that complexe world of robotic.
i wanted to buy a stepper motor today, but the seller said that i should use a card to control it. the motor is 4.5v and it is just of testing purpose before going farther.
i find somme information reading few post searching for "motor".
As i anderstoud the javelin can manage Stepper unsing the PWD class. I read the document http://www.parallax.com/Portals/0/Downloads/docs/prod/motors/Stepper_Motor_27964.pdf.
the document explain how to connect the motor an an ULN2803, but not on the javelin.
Of course my mother language is not english neither american so i got little problem to anderstand the documentation.
It is possible to have an example, picture i could see, for a stepper connection on the javelin.
By the way, there is a block Vm with 6 broch, in the doc this should be used for servo. Could i have more detail how to use it.
thanks.
PS : It is not easy for a non electronicien to got use with all that complexe world of robotic.
Comments
http://www.parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/27964/List/1/ProductID/65/Default.aspx?SortField=ProductName%2cProductName
regards peter
But i need informztion about how to connect this motor on a jevelin and not on the ULN2803.
The javelin simply cannot supply the current that the motor needs.
That's why you either need·transistors or a driver chip like the ULN2803.
So you can best use the provided schematics and test code.
The motor has no ground. You cannect one terminal to the positive supply,
the control pin goes to the collector of a transistor that switches to ground.
regards peter
in fact the probleme is that the javelin does send enougf electron (curent) so the ULN2803 receice inpulse from the javelin and send to the motor the curent comming from the battery 12v.
And to speed up the motor i need to send impulse more frequently ?