# I2C LCD Backpack for 1602 to 2004 LCDs

**Type:** Product page · **SKU:** 018-LCD1602-I2C · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/i2c-lcd-backpack-for-1602-to-2004-lcds.html ([markdown](https://core-electronics.com.au/i2c-lcd-backpack-for-1602-to-2004-lcds.html.md))

Almost every electronics enthusiast has run into pin issues with 1602 or the like LCDs. This module has a PCF8574T onboard which reduces the number of data pins needed to control the LCD down to 2! This excludes the power/ground pins which are also required.

## Pricing

- **Price:** $2.45 (inc GST) — $2.23 AUD, exc GST
- **Quantity discounts:** 5+ $2.18 (exc GST) · 15+ $2.12 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 16 today; more stock is typically available with a 8–12 day lead time.

## Description

Any electronics enthusiast that has used 1602 or similar LCDs can attest that their huge pin requirements can really put a damper on your project! This LCD-to-I²C adapter reduces the connections required all the way down to 4! (VCC, GND, SDA, SCL)

**Features and Specifications**

- Suits all standard 5V LCDs with 16 characters and 2 lines, or 20 characters and 4 lines
- Uses the PCF8574T IO expander from NXP as the "bridge" between interfaces ([Datasheet](https://core-electronics.com.au/attachments/localcontent/PCF8574_PCF8574A_81389a376fe.pdf))
- 4-Pin header for GND, VCC, SDA, and SCL
- Features a potentiometer for contrast adjustment
- Features a jumper to disable the backlight
- Arduino-compatible, with usage notes below
- Size: 40mm x 18mm

**Usage**

1. Connect the VCC, GND, SDA, SCL to the 5V, GND, SDA, and SCL pins respectively on your Arduino, similar to the image below:
    ![](https://core-electronics.com.au/media/wysiwyg/product_info/2022-06-08_12-59-26_IMG_1800.JPG)
2. Solder or wire this adapter to a 1602 or 2004 display ([this one](https://core-electronics.com.au/standard-lcd-16x2-extras-white-on-blue.html) for instance)
3. Download the [Arduino library .zip](https://core-electronics.com.au/attachments/localcontent/018-LCD1602-I2C_197350ea3c0.zip)
4. Install the library from the .zip file as shown below:
    ![](https://core-electronics.com.au/media/wysiwyg/product_info/zip-library.jpg)
5. Flash one of the example sketches, and all going well you'll see text on your LCD!

If you need more of a hand getting this part working, head on over to our [Tech Support Forum](https://forum.core-electronics.com.au/), and we'll do our best to get your project back on track!

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/0/1/018-lcd1602-i2c.jpg)