Stepper Motor Driver with l297 and MOSFET

Their are variety of stepper motor drives available in the market with high current ratings like 10 amps and more but to design a 10 amp it is very difficult. i have started working with it with my interest in motion control systems and cnc machines. l297 is a traditional translator which translates the clock and direction in a specific step codes with current controlling. these specific codes are than feeded to p and n type mosfets. the arrangement of this mosfet is done in such a manner that current can flow bidirectional. this arrangement is known as H bridge

above circuit shows the arrangement of mosfet, l297 and motor and it is 100% working. please note that this is the primitive type and more further components are needed to complete it like the protection diodes, fuse, etc. soon i will work on its enhanced circuit with all necessary things and pcb layout

if you want to see the working of this circuit please download the isis file which i included in this post

note : to move motor just push the button

 download

Interfacing LCD with pic and 8051

Hi every body this is my first post in this blog i have started blogging with list of usefull sites for interfacing lcd with 8051 pic and avr. i the below list their are many ways buy which you can interface your lcd with microcontroller 8 bit interface 4 bit interface and serial interface, there are also other lcd’s like graphic lcd nokia lcd interface tutorial and many more so don’t forget to check out

 

 

testing

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