16F777 resetting - at seemingly random times

[LinkMTech]

1. Try adding 1.0uF caps to the input and output of the 5V regulator as well.
2. I would make sure the 4.7K pullup on the MCLR line has a solid connection. A MCLR left floating would also cause intermittent resets.
3. Or just disable the MCLR function (MCLR_OFF, if I remember correctly) just to be sure some unseen noise spikes are not triggering the uC reset.

[shahidali55]

Try 47ohm resistor between PWM pins and mosfet gate

[mister_e]

BOTH Vdd and BOTH Vss NEED to be connected.

[orjon1]

BOTH Vdd and Vss? Wow, that's new - I'm surprised my other projects worked at all..

Will start with that and the MCLR and see how it goes.

Thank you all.

[orjon1]

Working perfectly!

Changes made,
MCLR OFF
47ohms resistors to MOSFET's
both Vdd and Vss's connected

Have not added the cap's due to space constraints - but will do that if it plays up again.

Thank you all again.
Orjon.

[Archangel]

I thought so but was not sure enough to mention it, thanks Steve.