LCD problem with 16F877

[alexx_57]

Hi paul, thanks for your time, currently I have 4,7k resistor on MCLR pin, both vss are connected to gnd and both vdd to +5v. No decoupler caps, i will make a test with a .1uf ceramic cap.
I made the circuit over a breadboard, could be that???
cheers.

Alex

[paul borgmeier]

Hi paul, thanks for your time, currently I have 4,7k resistor on MCLR pin, both vss are connected to gnd and both vdd to +5v. No decoupler caps, i will make a test with a .1uf ceramic cap.
I made the circuit over a breadboard, could be that???
cheers.

Alex

I run LCDs connected from breadboards all the time and they always work - try adding 10uF decoupler in addition to your .1uF bypass on both sets of VDD and VSS.

What brand of LCD? (I know it works for you on the 84A)

Are you sure this 877A PIC is alive with your current program?