So it's starting to look as if the person who started that other thread (link given above) really got a raw deal there. It's true that they came barging in, as so many Indian posters here seem to do, demanding answers and using very bad English. However, he really got the bum's rush. I thought that
this answer from Nigel Goodwin was particularly dismissive, especially given the answers I've seen here:
Nigel's unspoken assertion being that you have to use a PIC or some other kind of microprocessor here, or else use literally pounds and pounds of hardware, which is clearly not the case ... oh, well, I won't say anything more.