Adafruit I2C / SPI Character LCD Backpack - v1




$10.50 ea.
$9.45 ea.
$8.40 ea.

The Adafruit LCD backpacks reduce the number of pins needed to connect to an LCD. LCDs are a fun and easy way to have your microcontroller project talk back to you.

Description [Hide]

Darn that Adafruit! We had been stirring the pot on a similar project, because it's just so common-sense to do. But they beat us to the punch, and we'll carry their product instead.

The wonderful idea is a simple backpack module that is installable to most character LCD units, and make it easy to use with a minimum of communication lines. This backpack uses simple i2c and SPI input/output expanders to reduce the number of I/O lines to as few as 2 (using I2C), and Adafruit has even written an easy-to-use Arduino library that is backwards compatible with projects using the '6 pin' wiring.

This backpack will work with any 'standard' character LCD, from 8x1 to 40x4 sizes! As long as they have a 16-pin single-line connection header at the top.

For advanced users, this project can be used for general purpose I/O expansion, the MCP23008 has 8 i/o pins (7 are connected) with optional pull-ups, the SPI 74HC595 has 7 connected outputs.

Detailed tutorial on usage, including an Arduino library, wiring diagrams, and files
Wiring up a character LCD to an Arduino

Related Products [Hide]


Adafruit RGB Backlight (Black Background) LCD 16x2 + Extras

Instead of just having blue and white (or red and black), this LCD has full color RGB characters on a dark background! You can change the character display colors to red, green, blue, pink, white, purple yellow, teal, salmon, or chartreuse. This LCD looks strikingly good in person.

$13.95 USD


Breadboard Voltage Regulator Kit

The BVR Breadboard regulator kit makes it easy to add regulated, switchable power to your breadboard by using practically any 2.1mm DC adapter!

$5.95 USD


7-Segment Serial Display - Blue

The 7-Segment Serial Display turns the thirteen pins necessary to control a 4-digit 7-segment display into just one or three. The display will give you full control of all digits, decimal points, the colon and the apostrophe.

$12.95 USD


Ultra Bright LED

These water-clear standard sized (T1-3/4) LEDs are considerably brighter than most other LEDs in their class. Available in red, green, yellow, blue and white.

$0.90 USD


37 x 66mm Monocrystalline Solar Cell

This big brother of the SCC3733 is also an epoxy-encapsulated monocrystalline solar cell, but this one offers 8 volts and 44mA in a 37 x 66mm package!

$11.00 USD


2.8" TFT Touchscreen

Add some jazz & pizazz to your project with a color touchscreen LCD. This TFT display is big (2.8" diagonal) bright (4 white-LED backlight) and colorful! 240x320 pixels with individual RGB pixel control, this has way more resolution than a black and white 128x64 display.

$34.95 USD


2.8" TFT Touchscreen Shield

Spice up your Arduino project with a beautiful large touchscreen display shield with built in microSD card connection. As a bonus, this display has a resistive touchscreen attached to it, so you can detect finger presses anywhere on the screen!

$34.95 USD


Breadboard Jumper Wire Bundle

This 70-piece flexible wire jumper kit is sure to replace your old-style solid-wire jumpers. These are more flexible, robust, and easy to use!

$6.00 USD


Standard LED

Standard sized diffused T1-3/4 LEDs, great for indicators. Available in green, red, yellow, white and blue.

$0.35 USD


1.8" 18-bit color TFT LCD display microSD card breakout

This little breakout is the best way to add a small, colorful and bright display to any project. The 4-wire SPI for communication and pixel-addressable frame buffer means it can be used with every kind of microcontroller, even if very small with low memory and few pins available!

$25.00 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!