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thank you
miracully i found the sollution,and is to make a very short enable(pin e of the lcd), the long time of this enable take a chance to a power contactor introducing a (parasite) in lcd data bus
thanks for all member
bad 2x16 lcd
no it s isoletet by a relay 12v 1RT
i use an atmega32 interfaced with a diode and uln2003 and relay 12v 1RT directely attached with a coil of contactor (12 KW).
i know the problem is with the electrostatic an electromagnetic,and it affect only the lcd but the mcu and the hardwere...
lcd 2x16 bascom avr
thank you
the vee is cnnectet to the 5v and it s in reality (harware) fonctionnel.
for the rc filter i think it a solution but the responce time will be affectet
2x16 lcd
i have a problem with a lcd (44780 compatible)
some times i see a strange text on my 2*16 lcd (when i activate a power contactor)
when i renitialise my mcu the problem go and it return when i activate a power contactor
the solution is to reinitialise the lcd without restarting the...
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