HD44780 LCD with Serial Backpack

HD44780 LCD with Serail Backpack

5VDC , GND , Serial Tx In.
all you need to connect this lcd to your next project.
anything displayed across the serial monitor will be displayed on the 16×2 LCD

Don’t look too hard at the solder job. it was more of a quick proof of concept. I may etch a board with standard pitch headers for quick disconnect a little later on. I also added some headers on the uC to break out all the extra IO pins.


HD44780 Serial interface using AVR using only 3 wires (Rx, Vcc, GND)

Parts List

  • HD44780 LCD 16×2
  • ATMega328PU
  • 16MHz ceramic resonator
  • 10K potentiometer
  • Momentary push button switch
  • Male/female headers
  • PCB proto board
  • 10KΩ 1/4W resistor
  • 1KΩ 1/4W resistor
  • NPN transistor
  • Misc. wire

I found this a while back when working on a project that needed a LCD display but my pin count was low. http://hackaday.com/?s=serial+lcd

I found a way to display anything that comes over the serial monitor (in the arduino IDE) and displays it on the LCD

this is pretty much an arduino skeleton clone that is a daughter board for the HD44780 LCD. the sketch SERIAL_LCD_KIT just sits on the AVR chip and dumps any text that comes across the serial monitor to the LCD.

Here goes…

To see it in action… connect your arduino to the 3 pin header (VCC, GND,&Rx) and set COM port and open serial monitor. Send something down the serial monitor and watch it appear on the 16×2 LCD

serial lcd with arduino_bb

P1030396P1030398 P1030395


3 thoughts on “HD44780 LCD with Serial Backpack

  1. Pingback: Hackaday Links: February 9, 2014

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  3. Pingback: Hackaday Links: February 9, 2014 | Hack The Planet

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