Hi Robert, yes I did.. posted the result up;
I am testing again using another stopwatch and it is still showing a defecate of around 2 secs per 5 or 6 mins.
Using the micros() instead of millis(). I tried it over approx 1 hour and it was (I think) 11 seconds out?? That was also on another stopwatch. I have used 4 different stopwatches up to now which all run the same. For some reason my Uno & code run slower?? However, when I add the 7 hundredths each loop it appears accurate to approx 1 sec per hour.