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This board/chip uses I2C 7-bit address 0x20.

There is no support for PWM control of the backlight at this time, so if you need to have more granular control of the backlight, this plate can't do that (the I2C expander does not have PWM output). The buttons are automatically de-bounced inside the library.Īt this time, the code and plate can control the white backlight on or off. You can also easily query the 5 keypad buttons to get input through the library, so you get extra buttons without using any more pins. A 16x2 Character blue&white monochrome LCD is included!

This product comes as a kit! Included a high quality PCB and all the components (buttons, header etc). We have a special xtra-tall 26-pin header so the plate sits above the USB and Ethernet jacks.

The plate is designed for both Revision 1 and Revision 2 Raspberry Pi's. The 4 directional buttons plus select button allows basic control without having to attach a bulky computer. This pi plate is perfect for when you want to build a stand-alone project with its own user interface.

Now, we've updated this Pi plate so the buttons on the right side, which makes it a little more mechanically stable This is a super slick way to add a display without all the wiring hassle. With this in mind, we wanted to make it easier for people to get these LCD into their projects so we devised a Pi plate that lets you control a 16x2 Character LCD, up to 3 backlight pins AND 5 keypad pins using only the two I2C pins on the R-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. That's nearly all the GPIO available on a Pi! Unfortunately, these LCDs do require quite a few digital pins, 6 to control the LCD and then another 1 to control the backlight for a total of 7 pins. This new Adafruit Pi Plate makes it easy to use a blue and white 16x2 Character LCD.