Hi people
I have a circuit where I have a pic16f877 that commands four water pumps.
The connections between the pic and the pumps is made this way:
PIC -> 5k6 resistor -> Bc337 transistor -> relay -> contactor -> pump
I start the pumps in secuence and when a presure sensor signals, I shut down
every pump one by one.
When the last pump stops, the pic resets, and it should not.
Could it be my interface pic-pump the problem?
Could it be some EMI interference from contactors or pumps resetting the pic?
The most strange thing is that it resets only when the last pump power off.
the software is ok, because I put the circuit in my workbench, with leds
simulating the pumps and it works great.
If somebody has a clue, let me know.
Thanks a lot!
Matias

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Matias Vidoni
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