- Raspberry Pi
- Digital & analog sensors
- Development boards
- More +
...where a bunch of geeks got together to make other people's ideas come to life.
This is Adafruits RGB LCD + Keypad kit for Raspberry Pi. The Board uses a MCP23013 IO expander to control a 16x2 Character LCD, 3 backlight pins, and 5 keypad pins using only the two I2C pins on the Raspberry Pi! The best part is you don't really lose those two pins either, since you can stick I2C-based sensors, RTCs, etc and have them share the I2C bus. This is a super slick way to add a display without all the wiring hassle.
At this time, the code and plate can control the RGB backlight of our character LCDs by turning each LED on or off. This means you can display the following colors: Red, Yellow, Green, Teal, Blue, Violet, White and all off. There is no support for PWM control of the backlight at this time, so if you need to have more granular control of the RGB backlight to display a larger range of colors, this plate can't do that (the I2C expander does not have PWM output).
Adafruit has a great getting started tutorial for this kit.