Creating Bespoke output waveform

[Acetronics2]

There is no need for an OPA or two PIC outputs.
One RS232 level convertor chip should do the trick. All you need to keep in mind is the inverted logic.

HTH

Nick

Hi,

Ok for + 5 and -5 v ... ( better say +12 and -12 ); BUT ... How do you produce the 0 v level, then ???

The RS 232 third state, I presume ???

Alain