LCD Specifications
The LCD displays used for the RaceGauge are made by Hitachi, model number LMG7400PFLC.
    These LCD modules feature:
  • 240x128 resolution, black/white
  • 123mm x 68mm viewing area
  • +5v logic supply voltage, -22v LCD voltage, 1.6W total power consumption
  • Built-in HD61830 LCD display controller with 8-bit MPU interface
These LCD modules were purchased from a surplus electronics outlet for about $30 each. Here is the schematic for the LCD/MPU interface:

MPU/LCD Interface

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