{"product_id":"lcd1602-module-16x2-character-i2c-pcf8574-for-arduino-blue-yellow-green-1602a-development-board-mega2560-lcd-5v-adapter-plate","title":"LCD1602 Module 16x2 Character I2C PCF8574 for Arduino Blue Yellow Green 1602A Development Board Mega2560 LCD 5V Adapter Plate","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\"\u003e-\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\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\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003eLCD1602 Module 16x2 Character I2C PCF8574 for Arduino Blue Yellow Green 1602A UNO R3 Mega2560 IIC Display 5V Adapter Plate\u003c\/p\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" 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)\" class=\"word-break white-space mt-10\" align=\"left\"\u003e🔌 I2C Interface, Save Pins – Only SDA\/SCL needed, free up GPIOs for other devices.\u003cbr\u003e\u003cbr\u003e📺 16x2 Character Display – Show text, numbers, sensor data.\u003cbr\u003e\u003cbr\u003e🎨 Two Color Options – Blue background with white text, or Yellow-Green with black text.\u003cbr\u003e\u003cbr\u003e🔋 5V Operation – Directly compatible with Arduino 5V systems.\u003cbr\u003e\u003cbr\u003e🧩 PCF8574 Adapter Included – Pre-soldered on back, with potentiometer for contrast.\u003cbr\u003e\u003cbr\u003e📚 Easy Library – Use LiquidCrystal_I2C, just a few lines of code.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003eProduct Description\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003eThe classic LCD1602 character display, now with a PCF8574 I2C adapter pre-soldered. Instead of 6-10 wires, you only need VCC, GND, SDA, SCL (signal: SDA\/SCL). Works perfectly with Arduino UNO, Mega2560, Nano, ESP32 (with level shifting) etc. The blue potentiometer on the back adjusts contrast. Default I2C address is usually 0x27 (or 0x3F). Choose between blue or yellow-green screen. Ideal for weather stations, clocks, counters, or any project needing a simple text display.\u003c\/p\u003e\n\u003cp style=\"font-size:20px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003e⚡ Quick Start Guide \u0026amp; Important Tips\u003c\/p\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003e🔹 What It Does \u0026amp; What You Need\u003c\/p\u003e\n\u003cp style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003e✅ Does: Display ASCII characters, numbers, custom icons via I2C.\u003cbr\u003e\u003cbr\u003e❌ Does NOT: Display Chinese characters (needs graphic LCD), touch, store data.\u003cbr\u003e\u003cbr\u003e🔧 You need: Arduino (5V), 4 jumper wires (F-F), LiquidCrystal_I2C library.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003e🔹 Wiring (Arduino UNO)\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"width:100%;height:auto\" width=\"100%\" height=\"auto\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9bfb3bb5169e4a439b79fecb637acf1fr.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" 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)\" class=\"word-break white-space mt-10\" align=\"left\"\u003e❓ Screen lights up but shows blocks or no text?\u003cbr\u003e\u003cbr\u003eAdjust the potentiometer (rotate slowly) until characters become clear.\u003cbr\u003e\u003cbr\u003eRun an I2C scanner to confirm address (0x27 or 0x3F).\u003cbr\u003e\u003cbr\u003eCheck SDA\/SCL wiring.\u003cbr\u003e\u003cbr\u003e❓ Backlight off?\u003cbr\u003e\u003cbr\u003eCheck VCC\/GND. Ensure lcd.backlight() is called in code.\u003cbr\u003e\u003cbr\u003e❓ Can I display Chinese?\u003cbr\u003e\u003cbr\u003eNo, this is a character LCD for English\/European characters. See our graphic LCDs for Chinese.\u003cbr\u003e\u003cbr\u003e❓ Multiple I2C devices?\u003cbr\u003e\u003cbr\u003eYes, as long as addresses differ. Default 0x27 usually doesn't conflict with sensors.\u003cbr\u003e\u003cbr\u003e❓ What is the I2C address?\u003cbr\u003eMost common: 0x27. Some batches: 0x3F. Run I2C scanner to verify.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;font-weight:bold;text-align:left;color:rgb(67, 70, 73)\" class=\"word-break white-space mt-10\" align=\"left\"\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"width:100%;height:auto\" width=\"100%\" height=\"auto\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S0f99211d6f0b48f78a067bee83be80d8o.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"lcd1602 Blue","offer_id":55420404695339,"sku":"14:173#lcd1602 Blue","price":19.35,"currency_code":"USD","in_stock":true},{"title":"lcd1602 Green","offer_id":55420404728107,"sku":"14:201684806#lcd1602 Green","price":18.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S5bafc004dad14e708c4f52cf1c49281dV.webp?v=1788505567","url":"https:\/\/yoeruyo.com\/products\/lcd1602-module-16x2-character-i2c-pcf8574-for-arduino-blue-yellow-green-1602a-development-board-mega2560-lcd-5v-adapter-plate","provider":"Yoeruyo","version":"1.0","type":"link"}