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Python LCD Controller (ACM1602NI)

This package contains LCD controller for Raspberry Pi.

  • Raspbian Jessie
  • Python 2.7
  • LCD (ACM1602NI-FLW-FBW-M01)
  • Raspberry Pi2 Model B
  • Raspberry Pi Model A/B+ (unconfirmed)

Usage

$ sudo python raspi_lcd.py "Message for line 1" ["Message for line 2"]

You have to enable I2C in advance. Please read Prerequisite section.

Displayable Characters

  • Half-width English numbers and letters
  • Full-width / half-width Katakana
  • Some special characters

Configuration

If needed, edit BUS_NUMBER and LCD_ADDR in config.py.

Prerequisite

Enable I2C

Enable I2C

$ sudo raspi-config
  1. Select 9 Advanced Options
  2. Select A7 I2C
  3. Select Yes twice
  4. Reboot Raspberry Pi

Install i2c-tools, python-smbus

$ sudo apt-get install i2c-tools python-smbus

Load Drivers

$ sudo modprobe i2c-bcm2708
$ sudo modprobe i2c-dev

Edit I2C Config

Open /boot/config.txt and add line below.

dtparam=i2c_baudrate=50000

Reboot Raspberry Pi.

Breadboard wiring example

Breadboard wiring of ACM1602NI

Attention

Do not use i2cdetect command when LCD(ACM1602NI) is connected. Read access to i2c bus will causes hungging up of LCD.

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