I had more thoughts about this, having posted it, and I realise that I can use the same cable, as used previously, but simply take a jumper from pin 3 (Tx)on the DB9 onto one of the I/O pins on the Stamp and a jumper from pin 5 on the DB9 to GND on the Stamp
this works fine
sorry to have bothered anyone who looks at this post
Look in the Basic Stamp Syntax and Reference Manual in the chapters on the SERIN and SEROUT statements. These discuss how to interface to RS-232 signals with just a resistor in the input lead and using inverted mode.
Comments
this works fine
sorry to have bothered anyone who looks at this post