[Wendymott]

Hi Mr "B"..I didnt realise you were on a similar path. Up to now my micro controller modules have worked perfectly..so I was surprised when it "fell over". My friend in Oz wrote some good software. I suppose its not surprising when contacts switching 40 watts ish are not damped.
Your two tone waveform looks good to me.. if you pvt me I can send you my PDF's of up to now progress.