Controlling custom segmented LCD from existing hardware

Other Hardware Displays
1

I am working on a project where I want to rebuild the min logic of a system, but would love to keep the original lcd and control panel. Control panel is no issue, simple switches, but the LCD has me lost. looking for advice.

The current system has a pic microcontroller, and is wired to a i2c interface (Universal LCD driver for low multiplex rates | NXP Semiconductors) which is wired to the LCD. The LCD is not a character LCD, it has some static segmented icons, a clock (4*7-segment's) and a few other things.

Any idea where to start on this? What I was hoping to do was to remove the pic controller from the board and then link to the arduino there. Can the arduino interface with the PCF8566P easily?

Not sure where to start (yet) - any advice apprecited!

Mike

2

You should be able to connect to the I2C pins of the LCD segment driver and send it commands. Then you just have to try different segments until you figure out which is which.