hello guys…please help me, I make a project about the microcontroller and our project is a liquid level alarm. All is ok. from hardware, the connection and also the code is ok. nothing errors. But when we start and supply voltage of 5 volts. Nothing display on the lcd, its just a backlight. Please help us, this is my first time to do in these kind of project. Thank you.
http://www.engineersgarage.com/microcontroller/8051projects/liquid-level-alarm-AT89C51-circuit