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Grove - Serial LCD

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Introduction

Serial LCD Driver is an UART based LCD1602 display (Hitachi HD44780 or a compatible LCD). It can control LCD1602 only with two I/O port pins (UART Tx and Rx).The VCC and GND are the only additional pins required for operation. Conventional LCD drivers use 7-11 I/O port pins, whereas Serial LCD saves all these additional I/O pins. Serial LCD uses AT89S52 for implementing the UART Driving logic. Character, integral number and float number is supported.


Serial LCD includes:

  • A 16 x 2 LCD
  • A module reset button.
  • A variable resistor(R4) for LCD contrast ratio adjustment.
  • Two LED indicators:
    • Green LED (D1) indicates the Power.
    • Red LED (D2) indicates the type of command (ON is control command; OFF is character command).

Now Grove - Serial LCD has upgraded to version V1.1. Here is the introductions for different version. Clicking on the images below will take you to the documentation for the corresponding version.

Grove - Serial LCD v0.9b
Grove - Serial LCD v1.0b
Grove - Serial LCD v1.1b


Comparison between various versions

Here lists the comparison between various versions of Grove - Serial LCD:

Parameter V0.9 V1.0 V1.1
Operation voltage +5V +5V +5V
Communication Protocol UART UART UART
Backlight Control No Yes Yes
Power Control No Yes Yes
Library SerialLCD Library SerialLCD Library SerialLCD Library
Power Up Reset No No Yes
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