![]() ![]() In order to use I2C, you'll need to use special I2C pins onboard the Arduino. It's a way for integrated circuits (microprocessors) to talk to each other. That means we'll be using something called I2C, which stands for Inter-Integrated Circuit. We've already noticed there's a separate integrated circuit onboard the LCD display. All of that circuitry and the details of connecting an Arduino to the Sainsmart LCD 2004 are covered on the Sainsmart website (scroll down to the documents section, they link to a zip file that contains a bunch of example sketches and To begin with, we can note a couple of things about the LCD display:įirst, the display has its own microcontroller on-board, meaning it has hardware dedicated to turning voltage signals on the microcontroller board (coming from the Arduino) into the right output signals for its LCD display. This project will introduce a more advanced output device for the Arduino, namely, an LCD display for printing simple text messages. We're not doing a whole lot with the voltages in our system, or with the microcontroller. So far we've covered some really simple circuits with single components. ![]()
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