Power problems

[menta]

I will.
If I use the second circuit 7805 output and connect it to the first circuit (with the 16f887) it is working ok. (it has same parts including the LCD)

[menta]

i'm using a code to print 1,2,3... to the LCD
I see that it prints the numbers but also print junk,
So I guess something is making noise on the LCD input.
Tried with a resistor to the ground and some 22pF capacitors, but it doesnt help.

[gringobomba14]

Yes, serially connect the meter to +, set it to 10 Amps. Why not do the following. Use 1 7805 for the display and another 7805 for the PIC. you can place the circuits in parallel if you so wish. you will need a third 7805 (maybe) for the 2803. Keep us informed if you can

[menta]

Guys,
I have a another circuit with 1 7805 that push the PIC16f887 and the same LCD type.
I think its something else.

[skimask]

Post some code!!!

[languer]

You should have the MCLR set per the 16F877A datasheet. Note that the 16F887 "has a noise filter in the MCLR Reset path. The filter will detect and ignore small pulses.". This along with the different clock circuits on the 887 makes enough of a difference.

A simple test code which works on both the 877A and 887, as previously suggested, will also provide some insight.

[menta]

languar I didn't get you point.

DEFINE OSC 8
a var byte
a=0
TRISB=$0
test:
SEROUT PORTB.0,4,[254,128,#a]
a=a+1
pause 1000
goto test

end