SunFounder IIC/I2C/TWI LCD1602 Display Module Compatible with Arduino and Raspberry Pi
Quick take
This LCD1602 module adds a 16x2 character display to Arduino or Raspberry Pi-style projects using the I2C (IIC/TWI) interface, which cuts down wiring compared to parallel LCDs. It includes a potentiometer for adjusting contrast and backlight, and buyers generally report it performs well for real builds. The main caveat is setup convenience, since some users had to locate an appropriate I2C LCD library themselves.
Pros and cons
Pros
- I2C connectivity uses only four key connections (VCC, GND, SDA, SCL), reducing I/O pin use.
- Supports the I2C LCD1602 approach with an included library, plus you have a known starting address (0x27).
- Includes a potentiometer to tune backlight and contrast.
- Designed for +5V power and compatibility with Arduino and Raspberry Pi projects.
Cons
- Library documentation or linking can be confusing, so you may need to track down the right I2C LCD1602 library.
- Works for character LCD needs (not for graphics), so it is not a fit if you expected a different display type.
What buyers think
Buyer-review evidence for this module is strongly positive, with multiple reports that the display works as intended and supports projects without issues. A recurring theme is practical performance for maker builds, including compatibility with common microcontroller and single-board computer setups. Where friction shows up, it is usually around software setup, such as not finding a usable library link or needing to use an I2C LCD library from a separate source to get the display running.
What this display module is for
The SunFounder IIC/I2C/TWI LCD1602 is a character LCD intended for showing text, status messages, menus, and small amounts of UI in embedded projects. Because it uses I2C, you connect the display with SDA and SCL, plus power (VCC) and ground (GND), which is helpful when your controller has limited pins or you need to share the bus with other I2C devices.
Key features that matter during setup
Fewer wires with I2C
Unlike parallel LCD modules that can consume many GPIO pins, this one is designed to use four connections: VCC, GND, SDA, and SCL. That makes it easier to wire into Arduino and Raspberry Pi prototypes, especially when you want a clean, repeatable setup.
Contrast and backlight adjustment
A potentiometer is included to adjust contrast and backlight. This is useful because character LCD readability often depends on proper contrast tuning, and ambient lighting can make that adjustment worth having.
I2C address starting point
The module lists an I2C address of 0x27. If your project uses the standard I2C LCD1602 workflow, that address gives you a starting point for initialization.
Compatibility and power requirements
It is intended for +5V power, and it is positioned for use with Arduino and Raspberry Pi setups. If your platform uses a 3.3V I2C bus, you will want to ensure your wiring and I2C levels are handled appropriately for the hardware you are using, since the module is described for +5V operation.
Pros and cons, in plain terms
When it’s a great fit
- You want a straightforward text display for a hobby or learning project.
- You prefer I2C wiring to reduce pin usage (SDA/SCL instead of many parallel signals).
- You want the ability to tune readability with the built-in potentiometer.
- You are comfortable with basic Arduino/Raspberry Pi setup, including selecting or using an I2C LCD library.
When you might want a different approach
- If you need images, icons, or a graphical UI, a character LCD like this is the wrong class of display.
- If you want plug-and-play software with minimal hunting for the right I2C library, you may need to do a little extra setup research.
Buying guide: choosing the right LCD for your project
Prioritize I2C wiring and address clarity
If your controller already uses I2C (common on many boards), this module aligns well. The listed address of 0x27 can help you quickly get from “it powers on” to “it prints text,” once the correct library and I2C initialization are in place.
Confirm your voltage and I2C level situation
Because the module is described for +5V power, plan your setup around that requirement. If you are using a board that operates its GPIO at 3.3V, check how your project handles I2C pull-ups and voltage levels to avoid reliability issues.
Match the display type to your UI needs
LCD1602 is best for simple, readable text. If your project goal is menus, prompts, sensor readouts, or short logs, a 16x2 character screen is typically a practical choice. If you expect a richer interface, consider a different display category instead.
Verdict
The SunFounder IIC/I2C/TWI LCD1602 module is a solid choice for makers who want a reliable character LCD with simplified I2C wiring. Most buyers report it works well in real projects, and the contrast/backlight tuning is a practical touch. Just be prepared for potential software library setup hurdles, and make sure your power and I2C wiring are compatible with your controller.
FAQ
Is this LCD1602 module I2C (not parallel)?
Yes. It is an IIC/I2C/TWI LCD1602 module designed to connect using SDA and SCL along with VCC and GND.
What I2C address does the module use?
The listed I2C address is 0x27, which you can use as a starting point in your project.
What voltage does it require?
It is described for +5V power.
Does it include a way to adjust contrast and backlight?
Yes. A potentiometer is included to adjust backlight and contrast.
Will I need an I2C LCD library to use it?
Yes, you will typically use an I2C LCD1602 library to send commands and display characters. Some buyers found library linking/documentation could be unclear and needed to locate the right I2C LCD library themselves.
Is it suitable for both Arduino and Raspberry Pi projects?
It is designed for compatibility with Arduino and Raspberry Pi-style setups, using I2C.
Specifications
| Product Title | SunFounder IIC/I2C/TWI LCD1602 Display Module Compatible with Arduino and Raspberry Pi |
|---|---|
| Category | Electronics > Computers & Accessories > Computer Components > Desktop Barebones |
| Brand | SunFounder |
| Manufacturer | SunFounder |
| Model Name | 2004 20x4 LCD Module |
| Model Number | TS0351 |
| Operating System | ios |
| RAM Memory Installed | 1 MB |
| Memory Storage Capacity | 1 TB |
| CPU Model | 210 |
| Connectivity Technology | I2C |
| Processor Brand | ARM |
| Wireless Compability | 802.11b |
| Compatible Devices | Arduino, Raspberry Pi |
| RAM Memory Technology | LPDDR3 |
| Processor Count | 1 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Item Dimensions L x W x H | 4.9"L x 1.7"W x 0.4"H |
| Built-In Media | I2C LCD1602 |
| UPC | 701715367685 |
| Mfr Part Number | TS0351 |
| Warranty Description | 1 Year Guarantee |
| Unit Count | 1.0 Count |
| Ram Memory Installed Size | 1 MB |
Available variants
Color
- LCD2004 (1Pack)
- LCD2004 & I2C (2Pack)
- 16x2 I2C LCD
- LCD1602 (1Pack)
- LCD2004 (2Pack)
- LCD2004 & I2C (1Pack)
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