Adafruit will not be shipping USPS orders Monday February 18, 2019 for the federal holiday, Presidents Day. Expedited USPS orders placed after 11am ET Friday February 15 will go out Tuesday February 19.
0

Standard LCD 20×4 + extras – white on blue in stock!

Lcdblue204Msg Lrg
Standard HD44780 LCDs are useful for creating standalone projects.

  • 20 characters wide, 4 rows
  • White text on blue background
  • Connection port is 0.1″ pitch, single row for easy breadboarding and wiring
  • Single LED backlight included can be dimmed easily with a resistor or PWM and uses much less power than LCD with EL (electroluminescent) backlights
  • Can be fully controlled with only 6 digital lines!
  • Built in character set supports most English/European/Japanese text, see the HD44780 datasheet for the full character set
  • Up to 8 extra characters can be created for custom glyphs or ‘foreign’ language support
  • Comes with necessary contrast potentiometer and strip of header

For more information, check out the LCD datasheet (marginally useful) or the HD4470 datasheet with useful stuff like the character map. To use with an Arduino, we suggest using our library (see below). This one is faster, more complete, uses 1 less pin and is works with more LCDs.

To use, connect pin 1 (GND) to ground, pin 2 (VDD) to +5V, pin 3 (Vo) to the middle of the pot, pin 4 (RS) to Arduino pin 7, pin 5 (RW) to ground, pin 6 (E) to Arduino pin 8, leave pins 7-10 disconnected, pin 11 thru 14 (DB4-DB7) to Arduino pins 9 thru 12, pin 15 (BL+) to +5V and pin 16 (BL-) to ground. See For a detailed photo if you’re having difficulty (the pinout is the same for 16×2 and 20×4 LCDs)

If you’re not using Arduino 17+, then delete the old LiquidCrystal library in Arduino/hardware/libraries and in its place copy the updated LiquidCrystal library. Now in the IDE select the LiquidCrystal->HelloWorld example sketch to try it out! (You may need to adjust the contrast pot.) For a detailed guide on using the LCD, check out the the Arduino LiquidCrystal Reference and LiquidCrystal Tutorial

Get one now in the Adafruit store!


Please vote for Limor Fried (Ladyada) for Red Hat’s Women in Open Source Award
Our Ladyada (Limor Fried) was nominated for Red Hat’s Women in Open Source Award! Please vote for her! Visit: https://www.redhat.com/en/about/women-in-open-source

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 10,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Apple manufacturing in the U.S.? Easier said than done.

Wearables — Hot glue undo

Electronics — Working with sensitive circuits?

Biohacking — Circadian Pi Desk Light

Python for Microcontrollers — Python is for the birds, deep dive, Raspberry Pi store, and more! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF @Adafruit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



1 Comment

  1. “uses 1 less pin and is works with more LCDs.” Typo
    Glad to see a lot more products added to the store. My favorite place to order from! 😀

Sorry, the comment form is closed at this time.