{"product_id":"lcd1602-i2c-module-blue-yellow-green-screen-16x2-character-lcd-display-pcf8574t-pcf8574-iic-i2c-interface-5v-for-arduino","title":"LCD1602+I2C Module Blue \/ Yellow Green Screen 16x2 Character LCD Display PCF8574T PCF8574 IIC I2C Interface 5V for Arduino","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDisplay Mode\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLCD1602 I2C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eResolution\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e16*2\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eTFT\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_text\"\u003e\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003eLCD1602 I2C Display Module 16x2 Character PCF8574 IIC I2C Blue Yellow Green LCD Screen 5V for Arduino Adapter Plate DIY.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbe487209bb104a1690dfdf2812f756f8B.png\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S8ba806ca7eb9406aada0f570908d8cefV.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1e7a1dd5aee84c94a20dd1b0afc04f045.png\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003eKey Features \u0026amp; Benefits\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e🔌 I2C Interface, Only 4 Wires: Onboard PCF8574 I2C adapter reduces the original 7-pin parallel interface to just VCC\/GND\/SDA\/SCL. Saves 5 precious GPIO pins. Clean, elegant wiring.\u003cbr\u003e\u003cbr\u003e📟 16x2 Classic Format, High Contrast: 2 lines × 16 characters, HD44780-compatible controller. Blue screen with white text for crisp clarity; yellow-green screen with black text for maximum contrast. Wide viewing angle.\u003cbr\u003e\u003cbr\u003e🔧 Onboard Contrast Adjustment: Built-in blue potentiometer on the adapter plate. Adjust character contrast with a small screwdriver—no external resistors or circuits needed.\u003cbr\u003e\u003cbr\u003e⚡ 5V Power, Multi-Platform: Standard 5V operation. Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and all major microcontroller platforms. Arduino IDE includes LiquidCrystal_I2C library—install and go.\u003cbr\u003e\u003cbr\u003e🎨 Two Screen Colors Available: Blue background with white text (classic tech look) or yellow-green background with black text (industrial\/outdoor style).\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbf8f5b4eab2e4abc880476732832dedbW.png\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e📌 Note: All dimensions measured manually, allow 1-3mm tolerance. Actual color may vary slightly from pictures due to lighting. Please refer to the physical item.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003eProduct Description\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003eAdd the classic LCD1602 display to your Arduino project. The most enduring LCD in the maker community, now with an integrated PCF8574 I2C adapter. What once needed 7 IO pins now uses just 4: VCC, GND, SDA, SCL. Arduino libraries are fully compatible—display text in just a few lines of code. Onboard potentiometer adjusts contrast for any lighting condition. 2 lines × 16 characters for sensor data, system status, IP addresses, and more. Available in blue or yellow-green.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\u003cp style=\"font-size:20px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e🔧 Quick Start Guide \u0026amp; Important Tips\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e🔹 What It Is \u0026amp; What To Verify\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e✅ This is: LCD1602 LCD screen + PCF8574 I2C adapter (pre-soldered as one unit). 16x2 characters, 5V, I2C.\u003cbr\u003e\u003cbr\u003e❌ This is NOT: A color TFT. Cannot display images. Not SPI interface.\u003cbr\u003e\u003cbr\u003e🔧 You need: Arduino\/ESP32, 4x female-to-female Dupont wires.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e🔹 Wiring Guide\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e1.VCC → 5V\u003cbr\u003e2.GND → GND\u003cbr\u003e3.SDA → Arduino Uno A4 (or ESP32 GPIO21)\u003cbr\u003e4.SCL → Arduino Uno A5 (or ESP32 GPIO22)\u003cbr\u003e⚠️ I2C Address: Default is 0x27. If nothing shows, run an I2C scanner. Some batches use 0x3F.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e🔹 Driver Setup\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e1.Arduino IDE → Library Manager → Search LiquidCrystal I2C → Install by Frank de Brabander.\u003cbr\u003e2.Open HelloWorld example, set I2C address to 0x27 (or your scanned address).\u003cbr\u003e3.If characters appear faint or blocky, turn the blue potentiometer to adjust contrast.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e🔹 Common Questions\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73);display:block;width:100%\" align=\"left\"\u003e❓ No characters displayed? 1) Adjust the blue potentiometer (contrast). 2) Verify I2C address (0x27 or 0x3F). 3) Check wiring.\u003cbr\u003e\u003cbr\u003e❓ Shows a row of solid blocks? Contrast is too high—turn the potentiometer down.\u003cbr\u003e\u003cbr\u003e❓ Backlight not on? Check the backlight jumper on the adapter board. Some versions need a solder bridge to enable the backlight.\u003c\/p\u003e\n\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"LCD1602 Blue","offer_id":55420406038827,"sku":"14:29#LCD1602 Blue","price":19.35,"currency_code":"USD","in_stock":true},{"title":"Blue (5 Pcs)","offer_id":55420406071595,"sku":"14:1954460561#Blue (5 Pcs)","price":92.39,"currency_code":"USD","in_stock":true},{"title":"LCD1602 Yellow Green","offer_id":55420406104363,"sku":"14:201659810#LCD1602 Yellow Green","price":18.09,"currency_code":"USD","in_stock":true},{"title":"Blue (2 Pcs)","offer_id":55420406137131,"sku":"14:10#Blue (2 Pcs)","price":33.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sde85fd59823544248d9bf432b627265bd.webp?v=1788505572","url":"https:\/\/yoeruyo.com\/products\/lcd1602-i2c-module-blue-yellow-green-screen-16x2-character-lcd-display-pcf8574t-pcf8574-iic-i2c-interface-5v-for-arduino","provider":"Yoeruyo","version":"1.0","type":"link"}