The Hobbytronics LCD Backpack is a useful little board that can be soldered onto the back of LCD’s that use the standard Hitachi HD44780 compatible interface. This allows the LCD (and backlight if fitted) to be controlled directly from a microcontroller using either the I2C interface or via a serial RX connection at baud rates from 2400 up to 115200.
This has a number of advantages
- Reduces the minimum number of connections needed from 12 (for an LCD with backlight) to only 3 or 4 thus saving many input/output pins on the microcontroller
- Control an LCD using virtually any microcontroller either through the I2C interface or via a serial RX connection (either in hardware or software)
- Simplifies wiring
- Digital control of LCD backlight brightness from off (0) to fully on (250) and any level in between
- LCD Contrast adjustment potentiometer fitted to backpack
- Allows the connection of multiple LCD displays to one microcontroller without additional pins.
www.hobbytronics.co.uk/i2clcd-backpack-v2
No comments:
Post a Comment