??? 04/16/04 11:21 Read: times |
#68607 - RE: controlling stepper motor with c52 Responding to: ???'s previous message |
"so the question is, does stepper motors need PWM? "
"one thing more i have seen some people used such device that has PCA and watchdog, but they usualy use DC motor not stepper motor." At this rate it is going to take a long time and a few burnt MCUs + drivers before your stepper can make that first 1.8 deg turn ! Forget the people and instead focus on YOUR application. In any such stepper application you are better off retaining the power side driver like the LM297+LM298 pair from SGS and using MCU only to generate the required command signals. Also checkout http://www.allegromicro.com/ic/motor.asp. Even for the clock signal, a discrete clock generator is more elegant than loading the MCU with that job. And if you have a VCO as the clock source, the starting and stopping ramps are a breeze to handle. And before all this, please understand in DETAIL as to how a stepper works and what are the limitations on its speed and torque capabilities. "so is there any fuction in AT89C51 or AT89C52 can do the same job as PCA do or watchdog. " What happened to the data sheet ? And I also remember both above MCUs are not good for fresh designs - OK this you can check at the Atmel site. (BTW both do not have a watchdog or PCA.) Raghu |
Topic | Author | Date |
controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
RE: controlling stepper motor with c52 | 01/01/70 00:00 | |
Ckt - Christian Kleiber | 01/01/70 00:00 | |
RE: controlling stepper motor with c52![]() | 01/01/70 00:00 | |
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RE: controlling stepper motor with c52 | 01/01/70 00:00 |