--- product_id: 156116373 title: "20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004)" brand: "wayintop" price: "₱1512" currency: PHP in_stock: true reviews_count: 13 category: "Wayin Top" url: https://www.desertcart.ph/products/156116373-20x4-2004-lcd-display-module-with-iic-i2c-twi-serial store_origin: PH region: Philippines --- # Only 4 I/O pins used I2C serial interface 20x4 character display 20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) **Brand:** wayintop **Price:** ₱1512 **Availability:** ✅ In Stock ## Summary > 📟 Elevate your DIY projects with sleek, smart display power! ## Quick Answers - **What is this?** 20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) by wayintop - **How much does it cost?** ₱1512 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/156116373-20x4-2004-lcd-display-module-with-iic-i2c-twi-serial) ## Best For - wayintop enthusiasts ## Why This Product - Trusted wayintop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** Seamlessly integrates with Arduino and other microcontrollers for versatile project applications. - • **Plug & Play I2C Interface:** Simplify wiring with just two data lines—SDA and SCL—freeing up precious Arduino pins. - • **Compact & Efficient Design:** Consumes minimal I/O resources, leaving room for more complex projects. - • **Crystal Clear 20x4 Display:** Showcase 80 characters in vivid yellow-green backlight for ultimate readability. - • **Customizable Contrast & Backlight:** Adjust display clarity and lighting on the fly with built-in potentiometer and jumper cap. ## Overview The 20x4 2004 LCD Display Module with built-in I2C interface offers a bright yellow-green backlit screen capable of displaying 80 characters across 4 rows. Designed for Arduino and similar microcontrollers, it uses only four pins (VCC, GND, SDA, SCL) to minimize wiring complexity. Adjustable contrast and backlight settings enhance visibility, making it an ideal choice for professional-grade DIY electronics and prototyping. ## Description WayinTop: We aim to make your work Easier & Funnier! The LCD2004 with an I2C port is developed to solve the multiple IOs problem. It is also simple to handle. It has only two bidirectional data lines, a serial data line and a serial clock one. Specification: Display: 4 lines x 20 characters Backlight: yellow green with blcak character color Pin Definition: VCC/ GND/SDL and SCA Contrast Adjust: Potentiometer Backlight Adjust: Jumper Default Address: 0x27 Working Voltage: 5V How to wire: GND—GND; VCC—VCC; SDA—A4; SCL—A5 Application: Used to display Characters, letters and Numbers Package Included: 1 x 2004 LCD Display Module Yellow Green 1 x IIC/I2C/TWI Serial Interface Adapter Review: Nice 4x20 character LCD - Using the display without the included I2c interface board. It is compatible with Arduino Libraries. Soldered a female 16 pin SIP header on for using it with jumper wires. The I2c board can also plug into the header. I2c board works good with Arduino LiquidCrystal_PCF8574 library. The display data sheet for a Shenzhen model 2004A is available online. Arrived fast in good condition. Has a bright yellow back light with black characters. Review: Nice Display - Works was expected ## Features - 【20x4 LCD Display】With this shield, you can display whatever you want by programming the for Arduino board. Therefore, this is a perfect choice to make your project more interesting and vivid! Totally display 20 characters in one row, 4 rows can display 80 characters. - 【IIC Interface Adapter】No need to buy the adapter extra, this kit contains a IIC/I2C/TWI Serial Interface Adapter, with witch you can start your project at any time. - 【Easy to Use】 Less I/O ports are occupied, only four - VCC, GND, SDA (serial data line), SCL (serial clock line). Address of the module: 0x27 - 【Support IIC Interface】It only takes two I/O port thus saving more for other usages. You can adjust the contrast by the potentiometer at its back. If you don’t want the back light, you can also unplug the jumper cap at the LCD back. - 【Widely Applications】LCD display module based on the popular controller, works great with for Arduino and other micro-controllers. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TXBV8MS | | Best Sellers Rank | #149 in Serial Adapters | | Customer Reviews | 4.3 4.3 out of 5 stars (260) | | Date First Available | July 2, 2019 | | Item Weight | 2.39 ounces | | Item model number | WYTP26-2004YG | | Manufacturer | WayinTop | | Package Dimensions | 6.25 x 5.25 x 0.7 inches | ## Images ![20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) - Image 1](https://m.media-amazon.com/images/I/61LsGwUEiHL.jpg) ![20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) - Image 2](https://m.media-amazon.com/images/I/61SG8J+FMCL.jpg) ![20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) - Image 3](https://m.media-amazon.com/images/I/61l-qs083rL.jpg) ![20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) - Image 4](https://m.media-amazon.com/images/I/61AJplldN1L.jpg) ![20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) - Image 5](https://m.media-amazon.com/images/I/61lABafb1LL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Why doesn't the title match the description? 20 x 4 vs 16 x 2.** A: It is a 4 line by 20 character display **Q: Can the I2C address be changed?** A: Yes. There are three solder pad jumper areas on the I2C board that allow the changing of the address. **Q: Is there some documentation to ensure I get this connected correctly?** A: I'm using this with an Arduino UNO and https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads/ and SDA -> Pin A4, SCL -> Pin A5, GND -> GND, VCC -> 5V. The following sketch should be enough to get you started: #include #include LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C address void setup() { // initialize the lcd for 20 chars 4 lines, turn on backlight lcd.begin(20,4); lcd.backlight(); // finish with backlight on //-------- Write characters on the display ------------------ // NOTE: Cursor Position: (CHAR, LINE) start at 0 lcd.setCursor(0,0); lcd.print("Hello World!"); } Once uploaded, adjust contrast using the pot. You won't be able to see anything at either extreme (high or low) of the range. See the examples from the "NewLiquidCrystal_lib" for more. Also, don't forget to remove any other liquid crystal libraries from your libraries directory as there are conflicts. **Q: What library to use with this lcd and i2c interface?** A: here's the libraries I use #include // Required Library #include // Required Library #include // Required Library LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7,3,POSITIVE); //Address for LCD ## Customer Reviews ### ⭐⭐⭐⭐⭐ Nice 4x20 character LCD *by J***S on February 25, 2021* Using the display without the included I2c interface board. It is compatible with Arduino Libraries. Soldered a female 16 pin SIP header on for using it with jumper wires. The I2c board can also plug into the header. I2c board works good with Arduino LiquidCrystal_PCF8574 library. The display data sheet for a Shenzhen model 2004A is available online. Arrived fast in good condition. Has a bright yellow back light with black characters. ### ⭐⭐⭐⭐⭐ Nice Display *by D***E on April 23, 2025* Works was expected ### ⭐⭐⭐⭐⭐ Worked as expected. Price was great. *by N***G on October 29, 2019* I got this product (WayinTop 20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter for Arduino Uno R3 Mega 2560 (Yellow Green/2004)) Don't forget to adjust the contrast potentiometer on the serial adapter board. When I first ran some test code I thought, why isn't it showing anything. But turning the contrast up quickly showed the text I was expecting. ## Frequently Bought Together - WayinTop 20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Yellow Green/2004) - WayinTop 5pcs 360 Degree Rotary Encoder Module KY-040 Brick Sensor Development Board with Push Button for Arduino - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/156116373-20x4-2004-lcd-display-module-with-iic-i2c-twi-serial](https://www.desertcart.ph/products/156116373-20x4-2004-lcd-display-module-with-iic-i2c-twi-serial) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-05-22*