Hello. I have Smart G100 board connected to PC. The schematic used in my project is in attachment. I have some special problem with connection. PC receives strings with no problem but the board doesn't. I have to hit same command several time to get respond. Usually 3-30 times to get "OK" responding...

Thank you for reply!
Is the point there the fact that signal levels in PC's serial port are much higher than on the board?

Hello.

I have brand new Smart-g100 board. I'm trying to connect it to PC. Must I use the MAX circuit between the board and PC or is there options to direct connection?