It it possible to change the address of the lcd to have multiple lcd on the same bus?

To further expand on Wes' answer (which is excellent!), you can have up to eight (8) on the same bus, per the chip datasheets. The chips have a portion of the address hard-code (which cannot be changed) and the three remaining address lines (A0, A1, and A2) can be jumpered to ground to set seven (7) other addresses - the 8th being no jumpers. IF you happen to get one with an 8574 chip and another with 8574A or 8574T, then you could potentially have up to 16 modules on the same bus as the A and T versions use a different hard-coded address than the 8574.

Has anyone run this display on 3.3 volts successfully? I'd like to use it on an 8266-12E to display the ip address.

It works on 3.3V, but just barely: it's unusably dim. I changed the supply voltage to 5V and was able to successfully drive it with 3.3V-level I2C signals, although the PCF8574 data sheet says that the minimum Vih level is 0.7 * Vcc = 3.5V. My scope says that the signals are rising to about 3.8V, so there must be some kind of pull-up to 5V on the I2C backpack board. I don't want to rely on that, so for my final design I'll use a PCA9306 I2C level shifter.

Do these come with an I2C backpack? I just ordered some of these and they came with no backpack in the package.

There are several product options on the page, some have I2C, some don't. If you chose one that has I2C, it should come with an I2C backpack.

Does this work for the old raspberry pis that have a 26 pin gpio?

This module uses an i2c serial interface rather than discrete gpio pins. If your rpi has an i2c, it should work.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

SunFounder IIC/I2C/TWI LCD1602 Display Module Compatible with Arduino and Raspberry Pi

Product ID: 98403555

Details

Brand
SunFounder
CPU Model
210
Memory Storage Capacity
1 TB
Model Name
2004 20x4 LCD
Ram Memory Installed Size
1 MB

⚡5V power supply

🔌4-pin I2C interface

🎛️Adjustable backlight & contrast

AED 55

Duties & taxes included

In stock

Sold byAmazon UAEDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UAE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

📟 Elevate your DIY projects with sleek, smart display tech!

PROVEN RELIABILITY - Top-rated with 4.6 stars from 484 tech-savvy users
CUSTOMIZABLE VISUALS - Potentiometer lets you dial in perfect backlight and contrast
PLUG PLAY COMPATIBILITY - Seamlessly integrates with Arduino & Raspberry Pi ecosystems
ROBUST I 2 C PROTOCOL SUPPORT - Reliable, fast communication for smooth project performance
MINIMAL PIN USAGE MAXIMUM IMPACT - Only 4 pins needed—free up your I/O for more innovation

The SunFounder IIC/I2C/TWI LCD1602 Display Module is a compact, 4-pin I2C-compatible screen designed for Arduino and Raspberry Pi users. It features adjustable backlight and contrast via a built-in potentiometer, operates on a 5V power supply, and supports easy integration with provided libraries. Highly rated for reliability and ease of use, it’s perfect for makers aged 14 and up looking to add crisp visual output to their electronics projects.

Specifications

ASIN	B019K5X53O
Best Sellers Rank	#4 in Desktop Barebones #330 in Single Board Computers (Computers & Accessories)
Brand	SunFounder
Built-In Media	I2C LCD1602
CPU Model	210
Compatible Devices	Arduino, Raspberry Pi
Connectivity Technology	I2C
Customer Reviews	4.6 4.6 out of 5 stars (487)
Item Dimensions L x W x H	4.9"L x 1.7"W x 0.4"H
Manufacturer	SunFounder
Memory Storage Capacity	1 TB
Mfr Part Number	TS0351
Model Name	2004 20x4 LCD Module
Model Number	TS0351
Number of Items	1
Number of Packs	1
Operating System	ios
Processor Brand	ARM
Processor Count	1
RAM Memory Installed	1 MB
RAM Memory Technology	LPDDR3
UPC	701715367685
Unit Count	1 Count
Warranty Description	1 Year Guarantee
Wireless Compability	802.11b

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

AED 55

Duties & taxes included

In stock

Sold byAmazon UAEDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UAE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews