When&What to use...!!! simple questions?!
Does anyone know any answer to some quick Q's for me?
1) When do you have to use a serial controller like the Maxim232. Is it always neccesary to use USART?
2) What’s the best device to "drive" a TTL signal from a pic chip? Are there any chips out there that will accept a variable/noisy/crappy signal and output a nice clean, powerful, crisp +5V signal? Or should this be a "buffer"
3)What’s a good way to use one power supply and separate it into 2 power sources? In a current project of mine, I have a PIC chip controlling a H-Bridge. I would like to use one power supply for both devices, but the H-Bridge puts lots of noise into the circuit. I need a way to isolate them. I was thinking about using an optoisolator, but am not sure if it will pass noise through it as well.
Thanks so much!
Alan J Jurim