Hi guys first of all i am sorry about my language because English is not my mother language.

I am currently trying to build my own FPV system for drones without buying any preready parts online. So i want to build a video and audio transmitter and also a reciever as much as smaller and lighter and wide range). So if anyone can help me with this i would be so appreciated.

 

You want to design and build an FPV system that is better than those already available?

How far have you got with it?

 

You want to design and build an FPV system that is better than those already available?

How far have you got with it?

Not exactly) i just want to built someting basic but effective and small so i would be really happy if you can help me

 

Even building a "basic" unit is skill level 9 of 10.

Unless you are really skilled, I would choose another project.

 

Not exactly) i just want to built someting basic but effective and small so i would be really happy if you can help me

"something basic" is making an LED flash, designing and building an effective FPV system is at the considerably more advanced end of the scale. Since you don't appear to have a specification, or even a basic block diagram, or any previous electronics experience, how do you think you will deal with the actual hardware and software design?