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28 lines
1.3 KiB
Markdown
28 lines
1.3 KiB
Markdown
# About
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This is a test application for the HD44780 LCD driver. This display comes with
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many Arduino starter kits under the name of LCM1602C, and typically has 16x2
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columns and rows.
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# Details
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This test application will initialize the HD44780 driver with the configuration
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as specified in the default `hd44780_params.h` file. To connect the display with
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your board use the following minimal pinout for the LCD (i.e., Arduino here):
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- Pin 1 is connected directly to GND.
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- Pin 2 is connected directly to VCC +5V.
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- Pin 3 is used to set LCD contrast, for max use +5V or a 10k potentiometer.
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- Pin 4 (RS or “register select”) is connected to pin 2 on the Arduino
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- Pin 5 (RW or “read/write”) is connected directly to GND, i.e., unused.
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Also note: if you connect RW to your board that the LCD is driven by 5V, while
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many boards internally run at 3.3V - so this could fry the board :/
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- Pin 6 (EN or “enable”) is connected to pin 3 on the Arduino.
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- Pins 7 – 10: Not connected.
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- Pin 11 on the LCD is connected to pin 4 on the Arduino.
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- Pin 12 on the LCD is connected to pin 5 on the Arduino.
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- Pin 13 on the LCD is connected to pin 6 on the Arduino.
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- Pin 14 on the LCD is connected to pin 7 on the Arduino.
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- Pin 15 is connected to one end of a 1k resistor, and its other end to VCC +5V.
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- Pin 16 is connected directly to GND.
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