One last retarded question before I move to the chain. The fifth board is bothering me. What 2 points are you measuring to adjust voltage? TP1 to ground?
Ok, form has answered on that question. one more thing, if you connect fan to the board cut the yellow wire, it will reset PIC16LF1459 all the time. everything else is ok on that side.
@form what we need to change in the code for tach to working ? i have removed it from hardware completely, but it can be used for some alarm when the fan stop working or something like that ... is it big change or minor ? Thanks,
Cheers,