Parallax LCD with Stamp PLC

Rdll

Ok I'm trying to use a Parallax LCD with a stamp PLC, I tried using the normal output ports with no luck, then I tried using the SOUT connection to send data to the LCD with no luck. I have the LCD connected to the 5VDC output and ground, I've tried interconnecting ATN and GND with no luck either. My question is how to correctly use the SOUT port to communicate witht the LCD.

I'm using SEROUT 16, $54, ["TEST"] but it doesn't work, I've read that the signal from SOUT must be inverted but I couldn't find a clear diagram of an inverter circuit.

EDIT: I'm trying to find the "schematic for driving the LCD from the programming port using an NPN transistor" mentioned in another thread, haven't found it so far..

Rdll

Ok I found it here, I'll test the circuit tomorrow. I'm using the PLC as control for a vending machine if anyone's interested. I think I see a couple of reasons you discontinued the Stamp PLC, but it had potential... besides any product from Parallax is great