Hi,

I will soon be interfacing a trimble GPS to a pic and I'm wondering if there is a nice neat way to isolate it from the pic?

All I need from the GPS is the TX line to read the NMEA string. The TX line goes from -9 to + 9 volts dc during transmission.

Can I drive an opto coupler or something similiar to isolate the GPS from the pic?

I've looked online a bit and searched the forums, but no hints so far.

Thanks,
Steve