I2C/IIC (Inter-Integrated Circuit) – is a protocol originally created to communicate integrated circuits in an electronic device. Description of the I2C Protocolīefore discussing connecting the display to the Arduino with an i2C adapter, let’s talk briefly about the i2C protocol itself. Using I2C reduces the number of wires to 4 and the occupied pins to 2. The standard circuit for connecting the monitor directly to an Arduino microcontroller without I2C is as follows.īecause of the number of pins you have to connect, you may not have enough space to connect all the parts you need. Operating temperature range from -4F to +158F, storage temperature range from -22F to +176F ĭiagram of LCD Connection to Arduino Board Without I2C.Symbol display type, there is an option to load symbols.Let’s take a closer look at the pins of LCD1602:Įach of the pins has a different function: If the pins are not enough, you will have to buy an Arduino Mega board or save the pins by connecting the display via I2C, among other things. So using this LCD screen without i2c adds serious limitations for Arduino Uno or Nano boards. But the most important disadvantage of this screen is the fact that the display has 16 digital pins, of which at least six are mandatory.
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It is inexpensive, there are different backlight colors, and you can easily download ready-made libraries for Arduino sketches. The LCD 1602 Liquid Crystal Display is a good choice for displaying character strings in various projects.
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