IIC/I2C/TWI/SPI 5V Serial Interface Board Module for Arduino 1602LCD Display

Description

Arduino control board IO port is only 20, plus some sensor, SD card Han, relay modules and more, IO port is not enough, The original 1602/2004 screen requires 7 IO port can drive up, we have developed this module can help you save five IO ports, we send arduino library

Product parameters:

1. Dimensions: 41.5mm (length) * 19mm (W) * 15.3mm (height)
2. Weight: 5g
3. PCB Color: Black
4. Supply Voltage :2.5-6V
5. Supports the I2C protocol
6. With backlight power control, can be connected via jumper settings are backlight power. Plug the jumper to connect the backlight off, unplug the jumper to disconnect the backlight power
7. Contrast can be adjusted by turning the blue potentiometer clockwise increase, counterclockwise weakened. Potentiometer design on the front, enabling customers to freely adjust anytime
8. Modules can be cascaded to cascade up to eight. By short-circuiting A0/A1/A2 modify the device address. The default address is 0x27.

Links

• https://arduino-info.wikispaces.com/LCD-Blue-I2C#v3

Ändern der Adresse

This wil be a simple instructable on how to change the I2C addres of 1602 2004 lcd adapter. Iv decid it to make it after a frustrating attempt to find the address table on the net

Step 1: Locating the 3 address jumpers

If your adapter look eny thing like mine, thous 3 jumpers should be exactly as shown on the picture abow, once You have located them tak a closer look. factory setap (in my case) was that non of them was conected wich means that the addres of the device is 0x27

Step 2: Changing the address

Quelle: