how to design a circuit ?!

[Rawan89]

hi ,,, we are working on a project - automatic Audio system -. we choose the main chips as PIC33 (microcontroller). But know the main problem faced HOW TO DESING A FULL ELECTROINC CIRCUIT FOR THIS PROJECT ???? i mean all its part like resistors capacitors ...etc ?!

 

[misterT]

The datasheet of your PIC33 microcontroller is a good place to start.

 

[RadioRon]

How you approach the design of something really depends on your education and experience with electronics. Someone with a great deal of these will understand the functions of each component almost right away, especially after viewing a data sheet for the ICs involved, and will be able to draw a schematic with that knowledge. On the other end of the spectrum is the enthusiast who is keen but has not learned very many details about electronics yet. For this person to approach a design, the best solution is a kit with a proven schematic where his contribution is soldering, testing, adjustment and the like. If you are in between these two levels of skill, a modular approach may be best. This means that instead of trying to design at the resistor/capacitor/IC level, instead you buy pre-designed circuit modules that already include those components in to a working subsystem. For example, for working with a PIC processor, it might be wise to start by using a board from vendors like this one:SparkFun Electronics - PIC . With modules like those shown, some of the tricky stuff has already been done for you, but you still have to work out interfacing and other things. I recommend this approach for you.