Hi everyone. Working on building a small video receiver to use with FPV models.
Ive been playing with a rx5808 module. First I was using a arduino board to get 5v power from for testing. But this was not giving me enough current. The regulator was getting hot.
I measured the current to be around 200mA. I was dropping the voltage from a 12.6V battery.
That's (12.6-5)*0.2=1.5Watt, that's probably why it was getting hot.
So I took a cheap Chinese, no name, buck converter from my box of parts, and hooked that into it. Problem was that even with a 470uf cap, was producing noise (I think, I dont have a scope). Anyway the video sucked compared to my other receiver (store bought), which I'm certain uses the same module.
So cant definativley prove that that was the problem without a scope, but not going to want to run the cheap anonymous buck regulator from china anyway. I know having low ripple is important with this project anyway.
So weather or not that was the problem, I need a new 5v regulator.
Needing something with low ripple, has a input range of 6V-12.6V, and can provide the necessary current.
Switching would be nice, but not necessary, since I know switching regs tend to produce more noise.
Thanks for your're help! Sorry for the noobie nature of this question