--- product_id: 101853921 title: "SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack)" brand: "sunfounder" price: "B/.55" currency: PAB in_stock: true url: https://www.desertcart.com.pa/products/101853921-sunfounder-lcd-2004-displays-characters-of-4-rows-with-20 store_origin: PA region: Panama --- # 5V power 20 chars/line Arduino compatible SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) **Brand:** sunfounder **Price:** B/.55 **Availability:** ✅ In Stock ## Summary > 💡 Illuminate Your Ideas with Clarity! ## Quick Answers - **What is this?** SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) by sunfounder - **How much does it cost?** B/.55 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/101853921-sunfounder-lcd-2004-displays-characters-of-4-rows-with-20) ## 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 - • **Compact Design:** Sleek dimensions (97 x 59 x 12 mm) fit seamlessly into any project. - • **Dual Pack Value:** Get two LCDs for the price of one—perfect for collaborative projects. - • **Adjustable Contrast:** Fine-tune your viewing experience with a 50K potentiometer. - • **Crystal Clear Display:** Showcase 20 characters across 4 vibrant rows for maximum visibility. - • **Microcontroller Friendly:** Easily integrates with Arduino and other microcontrollers for endless possibilities. ## Overview The SunFounder LCD 2004 is a dual-pack display module featuring 20 characters per line across 4 rows, designed for clarity and versatility. With adjustable contrast and compatibility with Arduino, this display is perfect for both hobbyists and professionals looking to enhance their projects. ## Description Introduction LCD2004 display is a dot matrix module designed to display 20 characters including letter, number, and symbol, supporting 4-bit and 8-bit data transmission mode. It’s quite convenient for beginners to call the built-in library Liquid Crystal compatible with Arduino IDE, no need to edit yourself. Working voltage: 5V; Contrast adjustable with a 50K potentiometer onside. To use the 3.3V backlight, just connect pin A to 3.3V, pin K to GND. Pins’ Function VSS: Connected to ground VDD: Connected to a +5V power supply VO: To adjust the contrast RS: A register select pin that controls where in the LCD’s memory you are writing data to. You can select either the data register, which holds what goes on the screen, or an instruction register, which is where the LCD’s controller looks for instructions on what to do next. R/W: A Read/Write pin to select between reading and writing mode E: An enabling pin that, when low-level energy is supplied, causes the LDC module to execute relevant instructions. D0-D7: To read and write data A and K: Pins that control the LCD backlight For more details, please click: http://wiki.sunfounder.cc/index.php?title=LCD2004_Module Package Included2 x LCD2004 2 x 16Pins Pre-Soldered Header ## Features - Display 20 characters including letter, number and symbol in 4 lines on a large screen - Working voltage: 5V; Contrast adjustable with a 50K potentiometer onside - Bright backlight, displaying characters clearly - Module dimensions: 97 x 59 x 12 mm; Viewing area size: 71 x 21 mm - Compatible with Arduino and other micro-controllers. Package Included: 2 x LCD2004, 2 x 16Pins Pre-Soldered Header. ## Technical Specifications | Specification | Value | |---------------|-------| | Card Description | Dedicated | | Brand | SunFounder | | Item model number | SF-2X2004I2C | | Item Weight | 4 ounces | | Product Dimensions | 5.12 x 5.12 x 0.79 inches | | Item Dimensions LxWxH | 5.12 x 5.12 x 0.79 inches | | Color | 2X2004LCD | | Processor Brand | sunfounder | ## Images ![SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) - Image 1](https://m.media-amazon.com/images/I/71vTk+lWTTL.jpg) ![SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) - Image 2](https://m.media-amazon.com/images/I/71J-0RF4zCL.jpg) ![SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) - Image 3](https://m.media-amazon.com/images/I/719oJ52DNYL.jpg) ![SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) - Image 4](https://m.media-amazon.com/images/I/71oJ3MslPmL.jpg) ![SunFounder LCD 2004 displays Characters of 4 Rows with 20 Characters in Each. (2 Pack) - Image 5](https://m.media-amazon.com/images/I/712cXNUQE+L.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. --- ## 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/101853921-sunfounder-lcd-2004-displays-characters-of-4-rows-with-20](https://www.desertcart.com.pa/products/101853921-sunfounder-lcd-2004-displays-characters-of-4-rows-with-20) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-14*