Thanks for the reply Mackrachit
The only change to config was to change to HS in the inc file. The brown out is set to enable and 2 v. I tested with brown out disable with no effect. Testing for power drops shows no problem. I use a !2 v supply from a bench supply and a 7805 5v reg. A further problem has occurred on one occasion. The eeprom data for approx 32 registers changed to 00. See photo of my prototype set up. The bipolar stepper drivers are close to the pic. Are 18f very delicate compared to 16f
regarding em interference. Please treat my as pic novice as only been playing for 12mths (lots of fun though)





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