david_prentice:
It will be MUCH faster than the PCF8574 back pack that bit-bangs a 4-bit parallel LCD.It should be faster than the common I2C protocol that sends a "control" byte followed by a command or data stream to a native I2C LCD.
Will it? Is the I2C communication the limiting factor?
bperrybap:
That isn't the actual wiring.
It is a drawing of the intended wiring. Big difference....A photo would show the actual wiring.
We are fussy here on this forum. 