I have an Asus WL500gx wireless router that has an 8 pin header with two 3.3V serial ports (TX0, RX0, TX1, RX1, GND, +3.3V, RST and NC). I'm planing to connect port 1 to the GuruPlug. GP serial port has GND, TX, RX and +3.3V.
Can I directly connect GND-GND, RX1-TX, TX1-RX? Is any other component needed to isolate the devices?
Hi (first post here :-) ),
If both sides have the serial port at 3.3V TTL level, it should work. I use the 3.3V or 5V serial console signals of several small boxes (NSLU2, WRT54G, etc.) regular to interface with a FT232R breakout box (serial-TTL to USB) interface. Skips the RS-232 voltage levels, and you don't need a spare serial port on your PC. I plan to do the same with the GuruPlug, but still need the very small 4-pin connector...