Sounds to me like this is a school project. And you do not know how to start. You are not the first nor the last person with such a request. First of all we will not just hand over a turn key ready solution. But we will be more than happy to discuss specific problems with you. Just remember good questions draw good answers. As a start divide your problems into several more or less isolated problems. And select which PIC you will use. Then select if you will be using assembler or C/BASIC.HI
I am doing a project on dual axis solar tracker using PIC microcontroller ,ULN 2003 and 2 stepper motors and someone please post a circuit ?? and also as to how to proceed !? I have no idea about electronics !!!!!!
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Ok then, but you will have to use ULN2803. I have sketched the diagram with the help of Win-Paint since I do not have other software. See the attached file. By the way, by copying, I meant copying the concept not the diagram!@nerdegutta - Thank you for that link - I had already read that. It was useful.
I have made a circuit but I just need to know whether another stepper motor can be connected to it using another ULN and if it can be please help with the circuit.
@Mrchips - Thank you for your insights. I am posting the circuit.
@John P - I wonder
@tgotwalt - I have started building it with other circuit components so no scope of copying - :O
Never mind, it was a breeze to me to draw the diagram in paint. As far as the selection of ULN2803 is concerned, just I liked this way. In your post 10 and 15 you requested the same i.e. how to connect two stepper motors with two ULN's, and now you got that. Any port with digital I/O supporting TTL buffer type, e.g. RD0~RD7 but you will have to configure those pins.Thank you tgot for your time
why do you prefer ULN2804 ? and I wanted you to show me the connections of the two ULN with the PIC because I know the connections OF the two ULN2003 with the motors.
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by Jake Hertz
by Jake Hertz