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20 Jun 2011

ermicro.com writes:

Sometimes we need our microcontroller to interact with more human readable information. It will be better for us if we could make it display the words not just blinking the LED. Today most modern gadget such as mobile phone and PDA, use LCD (Liquid Crystal Display) for interacting with us. In this project we will learn how to use the 2×16 LCD for displaying the room’s temperature.

Actually driving the LCD hardware directly is a complex task, but luckily we don’t have to do that; in the market they have already put it together in one package the LCD display hardware and the microcontroller that control it, so our task will be easier now as we only talk to the build in microcontroller inside. The most famous on the market is the 2×16 LCD with LED backlight using Hitachi HD44780U or the equivalent microcontroller, this 80 pins microcontroller is a special dot matrix LCD driver controller with low power consumption and able to use 4-bit data or 8-bit data interface; my suggestion is to have this HD44780U datasheet near you as we walk through this project.

AVR LCD Thermometer Using ADC and PWM Project – [Link]

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