http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008 Rickey's World contact@nospam.com (Ajay Bhargav) contact@nospam.com (Ajay Bhargav) Wed, 07 Jan 2009 16:56:36 -0800 Wed, 07 Jan 2009 16:56:36 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php http://www.8051projects.net/forum-t939.html I have a problem with my stepper motor controller circuit. I used L293D and Atmega16L but there were no signal on L293D output pins although there were signals on AVR pins. I don't know what could the problem be. If anyone has a complete circuit diagram please let me know.
Regards.]]> Fri, 08 Jun 2007 01:51:05 -0700 http://www.8051projects.net/forum-t939.html http://www.8051projects.net/forum-t939.html L293D is for DC motors only....

but if you want to connect a stepper motor.. please use ULN2003 because that is best for it...
here is the screenshot... for L293D connected to µC

the connection SpeedN is -ve pole of DC and SpeedP is +ve pole of DC motor.
and use pullups to 5V for speedN and speedP.
please search in google for ULN2003 and stepper motor..]]> contact@nospam.com (Ajay Bhargav) Fri, 08 Jun 2007 03:14:14 -0700 http://www.8051projects.net/forum-t939.html http://www.8051projects.net/forum-t939.html I'll try to use ULN2003.]]> contact@nospam.com (Ajay Bhargav) Fri, 08 Jun 2007 08:12:20 -0700 http://www.8051projects.net/forum-t939.html http://www.8051projects.net/forum-t939.html L293D
and.. yes.. for stepper motor ULN2003 is best. i hope you found relevent material from internet regarding the usage. ]]> contact@nospam.com (Ajay Bhargav) Fri, 08 Jun 2007 11:09:32 -0700 http://www.8051projects.net/forum-t939.html http://www.8051projects.net/forum-t939.html I will really be happy if ULN2003 works!]]> contact@nospam.com (Ajay Bhargav) Fri, 08 Jun 2007 12:48:25 -0700 http://www.8051projects.net/forum-t939.html http://www.8051projects.net/forum-t939.html ]]> contact@nospam.com (Ajay Bhargav) Fri, 08 Jun 2007 13:27:28 -0700 http://www.8051projects.net/forum-t939.html