--- product_id: 774963203 title: "[SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品]" brand: "sunfounder" price: "B/.7" currency: PAB in_stock: false url: https://www.desertcart.com.pa/products/774963203-sunfounder-sunfounder-iic-i2c-twi-serial-2004-20x4-lcd-module store_origin: PA region: Panama --- # Ultra-low power consumption 20x4 character display I2C interface for minimal wiring [SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] **Brand:** sunfounder **Price:** B/.7 **Availability:** ❌ Out of Stock ## Summary > 🚀 Elevate your Arduino game with sleek, smart display power! ## Quick Answers - **What is this?** [SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] by sunfounder - **How much does it cost?** B/.7 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/774963203-sunfounder-sunfounder-iic-i2c-twi-serial-2004-20x4-lcd-module) ## Best For - sunfounder enthusiasts ## Why This Product - Trusted sunfounder brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crystal-Clear 20x4 Display:** Showcase complex data with sharp, easy-to-read characters on a spacious 3-inch screen. - • **Lightweight & Compact Design:** At just 86.4 grams and slim profile, it fits perfectly into any prototype or final build without bulk. - • **Plug-and-Play I2C Connectivity:** Simplify your Arduino projects with a streamlined 2-wire interface that cuts down on clutter and coding hassle. - • **Universal Arduino Compatibility:** Seamlessly integrates with both Arduino Uno and Mega2560 boards for versatile project applications. - • **Reliable Parallel Import Quality:** Get authentic SunFounder performance with a product that’s trusted by makers worldwide—don’t miss out on this essential shield. ## Overview The SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield is a compact, lightweight display solution designed for Arduino Uno and Mega2560. Featuring a clear 3-inch 20x4 character screen and efficient I2C communication, it reduces wiring complexity while delivering crisp data visualization for advanced DIY electronics projects. ## Description Very popular. The Sunfounder SunFounder IIC I2 °C TWI Serial 2004 LCD module shield for Arduino UNO MEGA2560 20x4 faster. Purchase your eyes. ## Features - Imported item - For the parallel import goods, boxes, etc. If you are not on the scratch, streak, etc. There may be, gifts, collection. ## Technical Specifications | Specification | Value | |---------------|-------| | Display Size | 3 Inches | | Total Usb Ports | 4 | | Batteries Included | No | | Batteries Required | No | | Brand | SUNFOUNDER | | Item Model Number | 8541582407 | | Product Dimensions | 19.05 x 12.7 x 0.51 cm; 86.4 g | | Item Weight | 86.4 Grams | ## Product Details - **Brand:** SUNFOUNDER - **Processor Count:** 1 - **Total USB Ports:** 4 - **UPC:** 701715368224 743447130144 ## Images ![[SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] - Image 1](https://m.media-amazon.com/images/I/71MzP4CZQtL.jpg) ![[SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] - Image 2](https://m.media-amazon.com/images/I/71F0p8n2vTL.jpg) ![[SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] - Image 3](https://m.media-amazon.com/images/I/71OS-4OpUSL.jpg) ![[SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] - Image 4](https://m.media-amazon.com/images/I/71Uo69Wbb+L.jpg) ![[SunFounder]SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield for Arduino Uno Mega2560 I2C LCD [並行輸入品] - Image 5](https://m.media-amazon.com/images/I/81p6IhrJ9vL.jpg) ## Questions & Answers **Q: It it possible to change the address of the lcd to have multiple lcd on the same bus?** A: 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. **Q: 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.** A: 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. **Q: Do these come with an I2C backpack? I just ordered some of these and they came with no backpack in the package.** A: 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. **Q: Does this work for the old raspberry pis that have a 26 pin gpio?** A: This module uses an i2c serial interface rather than discrete gpio pins. If your rpi has an i2c, it should work. ## Frequently Bought Together - SunFounder IIC I2C TWI Serial 2004 20x4 LCD Module Shield Compatible with Arduino R3 MEGA (IIC 2004) - 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 - ELEGOO MEGA R3 Board ATmega 2560 + USB Cable Compatible with Arduino IDE Projects RoHS Compliant --- ## 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.com.pa/products/774963203-sunfounder-sunfounder-iic-i2c-twi-serial-2004-20x4-lcd-module](https://www.desertcart.com.pa/products/774963203-sunfounder-sunfounder-iic-i2c-twi-serial-2004-20x4-lcd-module) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-04-22*