Without knowing what happend i just blew a UHU chip . . ...
The problem is that one of the encoder inputs seems to be irresponsive on the chip. I have three identical setups and if i move the chip to another board the error follows the chip.
Also the corresponding gate in the 74LS14 chip is blown together with 3 74ACT245 IC on the BOB.
And i have no idea how this could happen!!!!!!
Anyway i just replaced the capacitor with one on 22n instead of the 100n one with no effect on the heat in the resistor. Very strange!
I am going to try with a inductor there in series before the RC filter, hope that helps. I need to double the voltage .. .
regards
Chris