Can any body give me a good source code for controlling the 12 volt stepper motor speed .I am using Atmel's 89C52 controller.I am just using 4 pins of my port-1 to energize the motor's windings. this is the the code unit which i work for but its not wotking some how, ********************************************* int i,j; unsigned char STEP[4] = {0x0A,0x09,0x05,0x06}; //these r my switching sequence for my unipolar stepper motor// while(1) { for(i =0;i<4; i++) { P1 = STEP[i]; for(j=0;j<5;j++) { _nop_(); } } }
Thanx Mr. Cole.... I tied out with your suggestion of increasing tthe delay.....but still some times it just gets stucked up..... I don't know why.... can you please suggest me as you have suggested me for the previous problem... thanx again Regards Saurabh
In what way does the motor get stuck? Timing is everything, so are you either driving the motor past its maximum speed or acceleration? I might help to start with a single phase driver just to verify that there are no fundemental problems with you driver circuit. Driving stepper motors should be fairly straightforward, but the details of the characteristics of a particular motor and its load are very important. There is loads of information on the internet. There is some basic information here: http://209.41.165.153/stepper/Tutorials/UniTutor.htm