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  • 1602LCD Display IIC/I2C/TWI/SP  I Serial Interface Board Module Port For Arduino
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1602LCD Display IIC/I2C/TWI/SP I Serial Interface Board Module Port For Arduino

by GAOHOU

RRP: £5.99
Price: £1.50
You Save: £4.49 (75%)
In stock.
Dispatched from and sold by Hielec(Ship from China).
  • I2C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself)
  • Supply voltage: 5V
  • Come with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable
  • I2C Address: 0x27 (I2C Address: 0X20~0X27 (the original address is 0X27,you can change it yourself)
  • Size:5.5x2.3x1.4cm
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Frequently Bought Together

1602LCD Display IIC/I2C/TWI/SP  I Serial Interface Board Module Port For Arduino + FACILLA® 1602 16x2 Character LCD Display Module Blue Blacklight [Electronics] + DHT11 Temperature & Relative Humidity Sensor Module FREE Cable for Arduino
Price For All Three: £4.28

These items are dispatched from and sold by different sellers.

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Product Information

Technical Details
BrandGAOHOU
Item model numberA843
  
Additional Information
ASINB00FIVUXXA
Best Sellers Rank 9,261 in Computers & Accessories (See top 100)
Date First Available30 Sept. 2013
  
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Product Description

Features:
This is another great IIC/I2C/TWI/SPI Serial Interface. As the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I2C interface module, you will be able to realize data display via only 2 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project.
I2C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself)
Supply voltage: 5V
the backlight and contrast is adjusted by potentiometer
Come with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable
I2C Address: 0x27 (I2C Address: 0X20~0X27 (the original address is 0X27,you can change it yourself)
Compatible for 1602 LCD
Weight:5g
Size:5.5x2.3x1.4cm

  Package includes:
1 x IIC/I2C/TWI/SPI Serial Interface Module

Customer Questions & Answers

Customer Reviews

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Most Helpful Customer Reviews

45 of 45 people found the following review helpful By dizzy on 11 Feb. 2014
Verified Purchase
Review of the Funduino I2C LCM1602 board (red), as depicted
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Disappointing. Looks like a well thought out implementation. - The I2C connector mounts on either end of the board, so unlike others, it can be tucked neatly behind the display. Sadly, the one they kindly fit for you is on the "wrong" end (like many others) so that it sticks out beyond the end of display. A shame, but I wouldn't dock points for it.

This device arrives with no documentation or guidance. That might be ok if it complied with some kind of standard. This one doesn't, and the lack of any documentation anywhere on the web (at the time of writing) could result in a considerable number of hours to get it working. - Unless you read this, that is. I would advise beginners to stay away, but for those who have a little more experience or have bought one anyway, the following may be useful.

It is easy to find a web schematic for a PCF8574-based I2C LCD interface. All the ones I've found have essentially the following specification:

Default A0=A1=A2=0 giving I2C address = 0x20
P0 = LCD D4
P1 = LCD D5
P2 = LCD D6
P3 = LCD D7
P4 = LCD E
P5 = LCD R/W
P6 = LCD RS
P7 = LCD backlight (-ve logic)

This board is wired somewhat differently:

Default A0=A1=A2=1 giving I2C address = 0x27
P0 = LCD RS
P1 = LCD R/W
P2 = LCD E
P3 = LCD backlight (+ve logic) (via physical jumper enable/disable)
P4 = LCD D4
P5 = LCD D5
P6 = LCD D6
P7 = LCD D7

If you're using it with PIC, that's probably all you need to know, as you're probably programming it all yourself.
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1 of 1 people found the following review helpful By Ian Sharpe on 11 Feb. 2015
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Dizzy's analysis persuaded me to buy this and he is spot on. I would have given up without it.

I tested mine with a Pinguino, which is an Arduino-like platform for Microchip PICs. Specifically, I have the cheap self-assembly PIC18F45K50 model.

I made changes to the supplied lcdi2c.h file as follows:

#define LCD_RS PCF8574_data.bits.bit0 // P0
#define LCD_RW PCF8574_data.bits.bit1 // P1
#define LCD_EN PCF8574_data.bits.bit2 // P2
#define LCD_BL PCF8574_data.bits.bit3 // P3
#define LCD_D4 PCF8574_data.bits.bit4 // P4
#define LCD_D5 PCF8574_data.bits.bit5 // P5
#define LCD_D6 PCF8574_data.bits.bit6 // P6
#define LCD_D7 PCF8574_data.bits.bit7 // P7

I don't recall doing anything else to the code, other than maybe setting the address to 0x27. I think I will modify it further so that the standard and modified sections can be switched by means of suitable #define and #ifdef constructions. A star has been docked for the non-standard arrangement that makes me change a standard library, but it does work.

You can buy the core PCF8574 chip reasonably cheaply direct from China (try ebay). I can now see uses for them and just ordered two for £1.27 total delivered.

The LED backlight jumper can be replaced with a suitable resistor to limit the current and dim it. And the LCD may be working perfectly but display nothing because the contrast setting is out of range - the blue pot on the board should be twiddled to make it show.

On the Pinguino I added 10K pull-up resistors on the clock and data lines. It won't work without those because I2C lines need to be high by default.

I have now soldered my board directly to an LCD and used it for a couple of days solid. Together they make a very useful development aid. You can buy LCD and I2C interface ready assembled as a unit if you don't want to go to the trouble.
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This product worked great with my Arduino and 1602LCD display. After getting quite confused trying to get it working, I was greatly helped by Dizzy and Ian's previous reviews which led me to find a compatible library, available by searching the web for " IIC LCD1602(Arduino Compatible) - DFRobot". The packaged example script "HelloWorld" already has the correct address (0x27) and worked immediately (just remember to adjust the contrast potentiometer on the module to see the characters). With a bit of background information to make up for the missing documentation, when it's working this is a great and cheap little product.
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2 of 3 people found the following review helpful By Peter on 24 Mar. 2014
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This device is a useful experimenters device, useful both to explore i2c, as an in-out port and possibly to drive alphanumeric LCD displays.
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By DAVID JONES on 18 Mar. 2015
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excellent
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