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hi Andy,andy_efy said:i am new to the field of robotics. i am planning to make a chassis for which i am deciding on the propolsion system. stepper motors are in my mind. i have learnt that they rotate in steps but i want to know whether there is any way of making them rotate continuosly ?
andy_efy said:thanks eric,
i am planning to use a pic. i am using steppers so that i get to calculate the position of the bot without any added circuitry and also to precise movements.....steppers rotate one step for a pilse but suppose the pulse are far enough ( seperation time between pulses is great) then the motor wont rotate continuosly , right? i dont want the bot to move with jerks so is there any solution to this
i am planning to use the bipolar stepper motors found in floppy drives
andy_efy said:i am using steppers so that i get to calculate the position of the bot without any added circuitry and also to precise movements.....
picbits said:You can but you'll need to use microstepping.
This varies the current between phases allowing the motor to position itself between steps.
Have a look at www.piclist.com and do a search for microstepping - Roman Black has an excellent microstepper circuit on there.