Hello:

I am working on this project that interest me and I am having problems with the LCD working. I have checked the voltages and all the connection at different points of this project.

The chip I am using is the 16f628, the LCD is vishay lcd-020m004b. I have PICBasic programming my chip threw a EPic programmer and those work. My setup for the project board is a voltage regulator running off of a 9 volt battery powering the mcu. the mclr is powered by the 5 volts with the 4.7k resistor on the mclr pin (that is normal). the ground (Vss)is grounded, the power (Vdd) has 5 volts with a .1uf cap hooked to ground on it works fine also. The LCD has power going to it and ground also. I hooked it up to how the example program did in PICBasic and got nothing.

LCD should be connected as follows:
' LCD PICmicro
' DB4 PortA.0
' DB5 PortA.1
' DB6 PortA.2
' DB7 PortA.3
' RS PortA.4 (add 4.7K pullup resistor to 5 volts)
' E PortB.3
' RW Ground
' Vdd 5 volts
' Vss Ground
' Vo 20K potentiometer (or ground)
' DB0-3 No connect

I am wondering is there anything that I might have done wrong that I should look out for. A mistake that is common for rookies like myself and many others to follow.