Use a supervisor chip, not the RC reset. What is it?.
http://para.maxim-ic.com/compare.a...rs.cfm&ln=
Erik, is there a DIP part number for this IC. I would like to order some...this is interesting


-Put 100nf capacitors directly across all chips...
what all chips?
ALL chips whatever they are, IMPORTANT, do it now
OK, I will do that now.

-Put a 4.7 or 10 uF tantalum directly across the '51.
accross what? Vcc and GND of micro? I have a filter now...
filter? describe...I have Capacitor, Resistor =10 ohms and then another Cap. RC filter.



-Use a 4 layer board with ground and Vcc planes.

-Use differential serial communications (422/485). N/A, I guess
....Your are right N/A

-Put an VDR at raw power input. (What is this?) Voltage Dependent Resistor. This will cut all spikes on the power line...
Never heard of this before. How does it look like...it is a special resistor?


-Opto-isolate all non-differential signals.
May be a good idea for the signal from the flowmeter.
I have to find mor info on it.

-Put ferrite beads on all wires at the place where they enter the box.
important for your inductive load. Also, have snubbers across it...What kind would I need...I've heard you have to calculated freq. to be attenuated...this could be good for my inductive load...how do I shield that kind of load. I think some of the noise could come from here.

-Do not drive capacitive loads (like ribbon cables) from CMOS outputs...Do not have this in my design.

Erik

Thanks Erik!