{"product_id":"uno-r3-ch340g-atmega328p-development-board-with-usb-cable-arduino-compatible","title":"Uno R3 CH340G ATmega328p Development Board with USB Cable – Arduino Compatible","description":"\u003ch1\u003eUno R3 CH340G ATmega328p Development Board with USB Type-B Cable – Compatible\u003c\/h1\u003e\n\u003cp\u003eThe Uno R3 CH340G is a microcontroller board built around the ATmega328p, designed as a drop-in replacement for the Arduino Uno. It uses a CH340G USB-to-serial converter instead of the original ATmega16U2, making it a cost-effective choice while retaining full compatibility with the Arduino ecosystem. The included USB Type-B cable gets you started the moment you unpack.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\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\u003eMicrocontroller\u003c\/td\u003e\n\u003ctd\u003eATmega328P\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUSB-to-Serial Chip\u003c\/td\u003e\n\u003ctd\u003eCH340G\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDigital I\/O Pins\u003c\/td\u003e\n\u003ctd\u003e14 (6 provide PWM output)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAnalog Input Pins\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eClock Speed\u003c\/td\u003e\n\u003ctd\u003e16 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-bluetooth-home-automation-kit-with-arduino-nano-plus-flex-sensors\"\u003eHome automation sensor node that reads temperature\/humidity and controls relays over Wi-Fi or Bluetooth with add-on modules.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-line-following-robot\"\u003eLine-following robot using infrared sensors and DC motor drivers – perfect for student competitions.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-sensor-environmental-data-logger-kit-for-arduino-mega\"\u003eData logger that timestamps sensor readings to an SD card module for environmental monitoring.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eInteractive LED sculpture with PWM-controlled RGB strips, responding to sound or touch sensors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis board works seamlessly with the Arduino IDE (1.0 onward) once you install the CH340G driver. All 3.3V and 5V shields fit directly, as do standard sensors, LCDs, and servo motors. It pairs naturally with common modules like HC-05 Bluetooth, ESP8266 Wi-Fi, and NRF24L01 radios.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003ePower the board through the USB Type-B port (5V) or via the barrel jack\/VIN pin with 7–12V DC. Each I\/O pin can source up to 20 mA; use external transistors or drivers for heavier loads. The CH340G requires a one-time driver installation – Windows, macOS, and Linux drivers are freely available.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\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\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with the Arduino IDE?\u003c\/summary\u003e\u003cp\u003eYes. After installing the CH340G driver, select “Arduino Uno” under Board settings. All libraries and code examples work without modification.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this board come with a USB cable?\u003c\/summary\u003e\u003cp\u003eYes, a USB Type-B cable is included in the box so you can plug in and start programming right away.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat’s the difference between the CH340G version and an original Arduino Uno?\u003c\/summary\u003e\u003cp\u003eThe only functional difference is the USB-to-serial chip. The CH340G performs identically for programming and serial communication; you just need a specific driver, which is easy to install.\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":53445084610925,"sku":"CDN-0047","price":280.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_365adc3f-5b10-4393-8689-7114c9d9b341.jpg?v=1781513224","url":"https:\/\/compoden.com\/products\/uno-r3-ch340g-atmega328p-development-board-with-usb-cable-arduino-compatible","provider":"Compoden","version":"1.0","type":"link"}