{"product_id":"rgb-led-module-with-4-pin-header-for-arduino-compoden","title":"RGB LED Module with 4-Pin Header for Arduino | Compoden","description":"\u003ch1\u003eRGB LED Module (4-Pin, Common Cathode) for Arduino\u003c\/h1\u003e\u003cp\u003eThe RGB LED Module is a compact breakout board featuring a common cathode RGB LED with integrated current-limiting resistors. Designed for easy connection to Arduino and compatible microcontroller boards, it allows you to add full-color visual feedback to your projects. Use it for status indicators, ambient lighting, or color-coded signals.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Type\u003c\/td\u003e\n\u003ctd\u003eCommon Cathode RGB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Voltage (Red)\u003c\/td\u003e\n\u003ctd\u003e~2.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Voltage (Green\/Blue)\u003c\/td\u003e\n\u003ctd\u003e~3.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Current per Color\u003c\/td\u003e\n\u003ctd\u003e20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eR, G, B, GND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistors\u003c\/td\u003e\n\u003ctd\u003eIntegrated (220Ω each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMood lamp with smooth color transitions\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-battery-voltage-level-indicator\"\u003eStatus indicator for battery level or sensor readings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eColor-coded alarm system (red for error, green for okay)\u003c\/li\u003e\n\u003cli\u003eInteractive light-up toy or game controller feedback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis module works with any microcontroller board offering digital I\/O pins, including Arduino Uno, Nano, Mega, and ESP8266\/ESP32. It operates at 5V logic but can be used with 3.3V boards if the LED brightness is acceptable. Common pairings include the Arduino Uno for prototyping and the NodeMCU for IoT color notifications.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect the R, G, B pins to PWM-capable digital outputs on your microcontroller (e.g., pins 9,10,11 on Arduino Uno). The fourth pin is ground. No external resistors are needed. For common cathode modules, ensure the ground pin is connected to the microcontroller's GND.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the module has a common cathode and built-in resistors, so you can connect R, G, B to any PWM pins on the Uno and the cathode to GND. It works with the standard Arduino IDE without additional libraries.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the pinout of this module?\u003c\/summary\u003e\u003cp\u003eThe module has a 4-pin header: V (common cathode, actually ground), R (red), G (green), B (blue). Some modules label the common as '-' or GND. Check your module's labeling: connect the common to GND, and the R, G, B to PWM pins.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this with a 3.3V board like ESP32?\u003c\/summary\u003e\u003cp\u003eYes, but the LEDs may shine dimmer at 3.3V logic. The internal resistors are sized for 5V, so at 3.3V the current is lower. For full brightness, you might use a level shifter, but for most applications direct connection works fine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444946657645,"sku":"CDN-0065","price":25.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_e07dac13-4980-4748-950d-fa0c28d467da.jpg?v=1781512135","url":"https:\/\/compoden.com\/products\/rgb-led-module-with-4-pin-header-for-arduino-compoden","provider":"Compoden","version":"1.0","type":"link"}