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li{font-size:12.5px;color:#60646c;display:flex;gap:8px}\n.nznd__pinout-card li strong{color:#101114;min-width:90px;flex-shrink:0}\n@media(max-width:750px){.nznd__card{padding:22px 16px;min-height:0}.nznd__stats{grid-template-columns:repeat(2,1fr)}.nznd__uses{grid-template-columns:1fr 1fr}.nznd__pinout-grid{grid-template-columns:1fr}.nznd__spec-row{grid-template-columns:1fr}.nznd__spec-row dt{border-right:none;border-bottom:1px solid #e7e7e7;padding-bottom:5px}.nznd__spec-row dd{padding-top:5px}.nznd__tab{padding:11px 12px;font-size:12.5px}}\n@media(max-width:480px){.nznd__uses{grid-template-columns:1fr}.nznd__tab{padding:10px 9px;font-size:11.5px}}\n@media(prefers-reduced-motion:reduce){.nznd__panel{animation:none!important}.nznd__faq-a{transition:none!important}.nznd__faq-icon{transition:background .15s!important}.nznd *{transition-duration:.01ms!important}}\n\u003c\/style\u003e\n\n\u003carticle class=\"nznd\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n\u003cmeta itemprop=\"name\" content=\"MEGA2560 R3 CH340 ATmega2560 Dev Board USB-C, Compatible with Arduino\"\u003e\n\u003cmeta itemprop=\"sku\" content=\"MEGA2560-R3-CH340-TC\"\u003e\n\u003cmeta itemprop=\"brand\" content=\"NZN Electronics\"\u003e\n\n\u003cnav class=\"nznd__tabs\" role=\"tablist\" aria-label=\"Product sections\"\u003e\n\u003cbutton class=\"nznd__tab is-active\" type=\"button\" data-tab=\"overview\" role=\"tab\" aria-selected=\"true\"\u003eOverview\u003c\/button\u003e\n\u003cbutton class=\"nznd__tab\" type=\"button\" data-tab=\"specs\" role=\"tab\" aria-selected=\"false\"\u003eSpecifications\u003c\/button\u003e\n\u003cbutton class=\"nznd__tab\" type=\"button\" data-tab=\"pinout\" role=\"tab\" aria-selected=\"false\"\u003ePinout Guide\u003c\/button\u003e\n\u003cbutton class=\"nznd__tab\" type=\"button\" data-tab=\"uses\" role=\"tab\" aria-selected=\"false\"\u003eCommon Uses\u003c\/button\u003e\n\u003cbutton class=\"nznd__tab\" type=\"button\" data-tab=\"faq\" role=\"tab\" aria-selected=\"false\"\u003eFAQs\u003c\/button\u003e\n\u003c\/nav\u003e\n\n\u003cdiv class=\"nznd__card\"\u003e\n\n\u003csection class=\"nznd__panel is-active\" data-panel=\"overview\" role=\"tabpanel\"\u003e\n\u003cdiv class=\"nznd__strip\"\u003e\n\u003ch2 itemprop=\"name\"\u003eMEGA2560 R3 — ATmega2560 Development Board with CH340 \u0026amp; USB Type-C\u003c\/h2\u003e\n\u003cp itemprop=\"description\"\u003eWhen the Uno runs out of pins or program space, the MEGA2560 R3 is the answer. With 54 digital I\/O pins, 16 analog inputs, 4 hardware serial ports, and 256 KB of flash memory, this is the go-to board for 3D printers, CNC controllers, large sensor arrays, and complex robotics projects. This improved version uses the CH340G USB-to-serial chip and a modern USB Type-C connector — fully compatible with the Arduino IDE out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__stats\" role=\"list\" aria-label=\"Key specifications\"\u003e\n\u003cdiv class=\"nznd__stat\" role=\"listitem\"\u003e\n\u003cspan class=\"nznd__stat-val\"\u003e54\u003c\/span\u003e\u003cspan class=\"nznd__stat-lbl\"\u003eDigital I\/O Pins\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__stat\" role=\"listitem\"\u003e\n\u003cspan class=\"nznd__stat-val\"\u003e256 KB\u003c\/span\u003e\u003cspan class=\"nznd__stat-lbl\"\u003eFlash Memory\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__stat\" role=\"listitem\"\u003e\n\u003cspan class=\"nznd__stat-val\"\u003e16 MHz\u003c\/span\u003e\u003cspan class=\"nznd__stat-lbl\"\u003eClock Speed\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__stat\" role=\"listitem\"\u003e\n\u003cspan class=\"nznd__stat-val\"\u003e16\u003c\/span\u003e\u003cspan class=\"nznd__stat-lbl\"\u003eAnalog Inputs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul class=\"nznd__pills\" aria-label=\"Key features\"\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003e54 Digital I\/O (15 PWM)\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003e16 Analog Inputs\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003e4 Hardware Serial Ports\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003e256 KB Flash \/ 8 KB SRAM\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot nznd__dot--blue\"\u003e\u003c\/span\u003eCH340G USB-to-Serial\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot nznd__dot--blue\"\u003e\u003c\/span\u003eUSB Type-C Connector\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot nznd__dot--blue\"\u003e\u003c\/span\u003eArduino IDE Compatible\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003e5V Operating Voltage\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003eICSP Header Included\u003c\/li\u003e\n\u003cli class=\"nznd__pill\"\u003e\n\u003cspan class=\"nznd__dot\"\u003e\u003c\/span\u003eMega Shield Compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"nznd__callout nznd__callout--orange\" role=\"note\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff7a2f\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cline x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCH340G replaces ATmega16U2 — driver may be needed on Windows\u003c\/strong\u003e\u003cp\u003eThe CH340G USB chip is cost-effective and reliable on macOS and Linux with no drivers needed. Windows 10 and 11 users may need to install the CH340 driver once. Search \"CH340 driver WCH\" for the official download from the chip manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__callout nznd__callout--blue\" role=\"note\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#4a9af7\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cline x1=\"12\" y1=\"16\" x2=\"12\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"12\" y1=\"8\" x2=\"12.01\" y2=\"8\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eModern USB Type-C connector\u003c\/strong\u003e\u003cp\u003eThis improved R3 version upgrades to USB Type-C for programming and power — reversible and compatible with any standard Type-C cable. No adapter needed if you're already on Type-C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznd__panel\" data-panel=\"specs\" role=\"tabpanel\"\u003e\n\u003cp class=\"nznd__eyebrow\"\u003eElectrical \u0026amp; Physical Specifications\u003c\/p\u003e\n\u003cp class=\"nznd__body\"\u003eFull specifications for the MEGA2560 R3 CH340 TYPE-C development board. Based on the ATmega2560-16AU microcontroller running at 16 MHz with 5V operating voltage.\u003c\/p\u003e\n\u003cdl class=\"nznd__specs\" itemprop=\"additionalProperty\"\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eMicrocontroller\u003c\/dt\u003e\n\u003cdd\u003eATmega2560 (8-bit AVR)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eUSB Interface Chip\u003c\/dt\u003e\n\u003cdd\u003eCH340G (replaces ATmega16U2)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eUSB Connector\u003c\/dt\u003e\n\u003cdd\u003eType-C\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eOperating Voltage\u003c\/dt\u003e\n\u003cdd\u003e5V DC\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eInput Voltage (Recommended)\u003c\/dt\u003e\n\u003cdd\u003e7–12V\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eInput Voltage (Limits)\u003c\/dt\u003e\n\u003cdd\u003e6–20V\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eDigital I\/O Pins\u003c\/dt\u003e\n\u003cdd\u003e54 (15 support PWM output)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eAnalog Input Pins\u003c\/dt\u003e\n\u003cdd\u003e16 (10-bit, 0–5V)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eHardware Serial Ports (UART)\u003c\/dt\u003e\n\u003cdd\u003e4 × TTL-level UART\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eDC Current per I\/O Pin\u003c\/dt\u003e\n\u003cdd\u003e40 mA max\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eDC Current for 3.3V Pin\u003c\/dt\u003e\n\u003cdd\u003e50 mA max\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eFlash Memory\u003c\/dt\u003e\n\u003cdd\u003e256 KB (8 KB used by bootloader)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eSRAM\u003c\/dt\u003e\n\u003cdd\u003e8 KB\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eEEPROM\u003c\/dt\u003e\n\u003cdd\u003e4 KB\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eClock Speed\u003c\/dt\u003e\n\u003cdd\u003e16 MHz crystal oscillator\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eCommunication Interfaces\u003c\/dt\u003e\n\u003cdd\u003eSPI (ICSP header), I²C (SDA\/SCL), 4× UART\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eBoard Dimensions\u003c\/dt\u003e\n\u003cdd\u003e101.52 mm × 53.3 mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eShield Compatibility\u003c\/dt\u003e\n\u003cdd\u003eArduino Mega 2560 R3 shields\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eIDE Compatibility\u003c\/dt\u003e\n\u003cdd\u003eArduino IDE (select \"Arduino Mega or Mega 2560\")\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eBuilt-in LED\u003c\/dt\u003e\n\u003cdd\u003eD13 (user-programmable)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eICSP Header\u003c\/dt\u003e\n\u003cdd\u003eYes (AVR in-system programming)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__spec-row\"\u003e\n\u003cdt\u003eReset Button\u003c\/dt\u003e\n\u003cdd\u003eYes\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznd__panel\" data-panel=\"pinout\" role=\"tabpanel\"\u003e\n\u003cp class=\"nznd__eyebrow\"\u003ePinout \u0026amp; Getting Started\u003c\/p\u003e\n\u003cp class=\"nznd__body\"\u003eThe MEGA2560 R3 exposes its pins across four headers around the board perimeter. Here is a summary of the key pin groups and how to get your first sketch running.\u003c\/p\u003e\n\u003cdiv class=\"nznd__pinout-grid\"\u003e\n\u003cdiv class=\"nznd__pinout-card\"\u003e\n\u003ch3\u003eDigital I\/O (D0–D53)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eD0–D1\u003c\/strong\u003e Serial0 (RX\/TX) — USB programming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD2–D3\u003c\/strong\u003e External interrupts INT4\/INT5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD13\u003c\/strong\u003e Built-in LED (LED_BUILTIN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM pins\u003c\/strong\u003e D2–D13, D44–D46 (15 total)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD18–D21\u003c\/strong\u003e Serial1–3 (4 hardware UARTs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__pinout-card\"\u003e\n\u003ch3\u003eAnalog Inputs (A0–A15)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA0–A15\u003c\/strong\u003e 10-bit analog inputs (0–5V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA4\/A5\u003c\/strong\u003e I²C SDA\/SCL (shared with pins 20\/21)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference\u003c\/strong\u003e AREF pin for external voltage ref\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__pinout-card\"\u003e\n\u003ch3\u003ePower Pins\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVIN\u003c\/strong\u003e External supply input (7–12V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V\u003c\/strong\u003e Regulated 5V output (from USB or VIN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V\u003c\/strong\u003e 3.3V regulated output (50 mA max)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGND\u003c\/strong\u003e Multiple ground pins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRESET\u003c\/strong\u003e Active-low reset\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__pinout-card\"\u003e\n\u003ch3\u003eCommunication\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial0\u003c\/strong\u003e D0\/D1 — USB via CH340G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial1\u003c\/strong\u003e D18\/D19 (TX1\/RX1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial2\u003c\/strong\u003e D16\/D17 (TX2\/RX2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial3\u003c\/strong\u003e D14\/D15 (TX3\/RX3)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPI\u003c\/strong\u003e ICSP header (MISO\/MOSI\/SCK\/SS)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003col class=\"nznd__steps\" aria-label=\"Getting started steps\"\u003e\n\u003cli class=\"nznd__step\"\u003e\n\u003cdiv class=\"nznd__step-n\"\u003e1\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInstall CH340 driver (Windows only)\u003c\/strong\u003e\u003cp\u003emacOS and Linux detect the board automatically. Windows 10\/11 users should download the CH340 driver from WCH's website and install it before plugging in the board.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"nznd__step\"\u003e\n\u003cdiv class=\"nznd__step-n\"\u003e2\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eConnect via USB Type-C\u003c\/strong\u003e\u003cp\u003eUse any standard USB-A to Type-C or Type-C to Type-C cable. The board powers up immediately and the green power LED will illuminate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"nznd__step\"\u003e\n\u003cdiv class=\"nznd__step-n\"\u003e3\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSelect the correct board in Arduino IDE\u003c\/strong\u003e\u003cp\u003eGo to \u003ccode\u003eTools \u0026gt; Board \u0026gt; Arduino AVR Boards\u003c\/code\u003e and select \u003ccode\u003eArduino Mega or Mega 2560\u003c\/code\u003e. Then select \u003ccode\u003eATmega2560\u003c\/code\u003e under Processor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"nznd__step\"\u003e\n\u003cdiv class=\"nznd__step-n\"\u003e4\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSelect the correct port\u003c\/strong\u003e\u003cp\u003eGo to \u003ccode\u003eTools \u0026gt; Port\u003c\/code\u003e and select the COM port that appeared when you plugged in the board. On Windows it will show as \"USB-SERIAL CH340 (COMx)\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"nznd__step\"\u003e\n\u003cdiv class=\"nznd__step-n\"\u003e5\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eUpload the Blink example to verify\u003c\/strong\u003e\u003cp\u003eOpen \u003ccode\u003eFile \u0026gt; Examples \u0026gt; 01.Basics \u0026gt; Blink\u003c\/code\u003e and click Upload. The D13 LED should blink once per second, confirming the board is working correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznd__panel\" data-panel=\"uses\" role=\"tabpanel\"\u003e\n\u003cp class=\"nznd__eyebrow\"\u003eApplications \u0026amp; Use Cases\u003c\/p\u003e\n\u003cp class=\"nznd__body\"\u003eThe MEGA2560's combination of large flash memory, abundant I\/O pins, and multiple hardware serial ports makes it the board of choice whenever an Uno's resources run short — from 3D printer control boards to large automation rigs.\u003c\/p\u003e\n\u003cdiv class=\"nznd__uses\"\u003e\n\u003cdiv class=\"nznd__use\"\u003e\n\u003cstrong\u003e3D Printer Control\u003c\/strong\u003e\u003cp\u003ePowers RAMPS 1.4 and similar shields for FDM 3D printers — the most common MEGA2560 application in the maker community.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__use\"\u003e\n\u003cstrong\u003eCNC Machine Control\u003c\/strong\u003e\u003cp\u003eDrive Grbl-compatible CNC shields for routers, laser cutters, and milling machines. Four serial ports handle multiple steppers comfortably.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__use\"\u003e\n\u003cstrong\u003eRobotics Platforms\u003c\/strong\u003e\u003cp\u003eControl multiple servos, motors, and sensors simultaneously. The 54 I\/O pins and PWM outputs make complex robot builds straightforward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__use\"\u003e\n\u003cstrong\u003eLarge Sensor Networks\u003c\/strong\u003e\u003cp\u003eRead dozens of sensors simultaneously using analog inputs and multiple UARTs — ideal for weather stations, environmental monitors, and data loggers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__use\"\u003e\n\u003cstrong\u003eAutomation \u0026amp; PLC Replacement\u003c\/strong\u003e\u003cp\u003eIndustrial-style automation projects that need many digital inputs\/outputs, relay control, and serial communication to HMI panels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__use\"\u003e\n\u003cstrong\u003eEducation \u0026amp; Prototyping\u003c\/strong\u003e\u003cp\u003eThe extra headroom in pins, memory, and serial ports makes the MEGA2560 ideal for classroom projects and advanced maker builds that outgrow the Uno.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__callout nznd__callout--blue\" role=\"note\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#4a9af7\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cline x1=\"12\" y1=\"16\" x2=\"12\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"12\" y1=\"8\" x2=\"12.01\" y2=\"8\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eUno vs MEGA2560 — when to upgrade\u003c\/strong\u003e\u003cp\u003eIf your sketch is running out of flash memory, you need more than 14 digital pins, you need more than one hardware serial port, or your project needs to talk to many peripherals simultaneously — the MEGA2560 is the natural next step within the Arduino ecosystem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznd__panel\" data-panel=\"faq\" role=\"tabpanel\"\u003e\n\u003cp class=\"nznd__eyebrow\"\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cdiv class=\"nznd__faq\"\u003e\n\u003cdiv class=\"nznd__faq-item\"\u003e\n\u003cbutton class=\"nznd__faq-q\" type=\"button\" aria-expanded=\"false\"\u003eIs this 100% compatible with the official Arduino Mega 2560?\u003cspan class=\"nznd__faq-icon\"\u003e\u003csvg viewbox=\"0 0 12 12\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003cline x1=\"6\" y1=\"2\" x2=\"6\" y2=\"10\"\u003e\u003c\/line\u003e\u003cline x1=\"2\" y1=\"6\" x2=\"10\" y2=\"6\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\n\u003cdiv class=\"nznd__faq-a\"\u003eYes. The pin layout, processor, and bootloader are all fully compatible with the official Arduino Mega 2560 R3. All Mega-compatible shields, libraries, and sketches work without modification. The only difference is the CH340G USB chip instead of ATmega16U2 — functionally identical for programming and serial communication.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__faq-item\"\u003e\n\u003cbutton class=\"nznd__faq-q\" type=\"button\" aria-expanded=\"false\"\u003eDo I need to install a driver for the CH340?\u003cspan class=\"nznd__faq-icon\"\u003e\u003csvg viewbox=\"0 0 12 12\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003cline x1=\"6\" y1=\"2\" x2=\"6\" y2=\"10\"\u003e\u003c\/line\u003e\u003cline x1=\"2\" y1=\"6\" x2=\"10\" y2=\"6\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\n\u003cdiv class=\"nznd__faq-a\"\u003emacOS (10.9+) and most Linux distributions include CH340 support natively — no driver install needed. Windows 10 and 11 may need the CH340 driver installed once before the board appears as a COM port. Search \"CH340 driver WCH\" to find the official download from the chip manufacturer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__faq-item\"\u003e\n\u003cbutton class=\"nznd__faq-q\" type=\"button\" aria-expanded=\"false\"\u003eWill my RAMPS 1.4 \/ 3D printer shield work with this board?\u003cspan class=\"nznd__faq-icon\"\u003e\u003csvg viewbox=\"0 0 12 12\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003cline x1=\"6\" y1=\"2\" x2=\"6\" y2=\"10\"\u003e\u003c\/line\u003e\u003cline x1=\"2\" y1=\"6\" x2=\"10\" y2=\"6\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\n\u003cdiv class=\"nznd__faq-a\"\u003eYes. The MEGA2560 R3 CH340 is pin-compatible with the RAMPS 1.4 shield and works with Marlin, Repetier, and other 3D printer firmware. It is one of the most common boards used for RAMPS-based FDM printers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__faq-item\"\u003e\n\u003cbutton class=\"nznd__faq-q\" type=\"button\" aria-expanded=\"false\"\u003eHow much more memory does the MEGA2560 have vs an Uno?\u003cspan class=\"nznd__faq-icon\"\u003e\u003csvg viewbox=\"0 0 12 12\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003cline x1=\"6\" y1=\"2\" x2=\"6\" y2=\"10\"\u003e\u003c\/line\u003e\u003cline x1=\"2\" y1=\"6\" x2=\"10\" y2=\"6\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\n\u003cdiv class=\"nznd__faq-a\"\u003eConsiderably more. The MEGA2560 has \u003cstrong\u003e256 KB flash\u003c\/strong\u003e (vs 32 KB on the Uno), \u003cstrong\u003e8 KB SRAM\u003c\/strong\u003e (vs 2 KB), and \u003cstrong\u003e4 KB EEPROM\u003c\/strong\u003e (vs 1 KB). That's 8× the program storage and 4× the RAM — enough to run complex firmware like Marlin without running out of space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__faq-item\"\u003e\n\u003cbutton class=\"nznd__faq-q\" type=\"button\" aria-expanded=\"false\"\u003eWhat power supply should I use with the MEGA2560?\u003cspan class=\"nznd__faq-icon\"\u003e\u003csvg viewbox=\"0 0 12 12\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003cline x1=\"6\" y1=\"2\" x2=\"6\" y2=\"10\"\u003e\u003c\/line\u003e\u003cline x1=\"2\" y1=\"6\" x2=\"10\" y2=\"6\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\n\u003cdiv class=\"nznd__faq-a\"\u003eFor USB-only prototyping, the Type-C cable provides sufficient power. For standalone projects, use a 7–12V DC supply via the barrel jack or VIN pin — 7.5V is a good choice as it runs the onboard regulator cool. Avoid going above 12V as the regulator will overheat under load.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznd__faq-item\"\u003e\n\u003cbutton class=\"nznd__faq-q\" type=\"button\" aria-expanded=\"false\"\u003eHow many devices can I connect to serial at once?\u003cspan class=\"nznd__faq-icon\"\u003e\u003csvg viewbox=\"0 0 12 12\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003cline x1=\"6\" y1=\"2\" x2=\"6\" y2=\"10\"\u003e\u003c\/line\u003e\u003cline x1=\"2\" y1=\"6\" x2=\"10\" y2=\"6\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\n\u003cdiv class=\"nznd__faq-a\"\u003eThe MEGA2560 has \u003cstrong\u003e4 independent hardware UART ports\u003c\/strong\u003e (Serial, Serial1, Serial2, Serial3). This lets you connect a GPS module, Bluetooth module, and a display all via hardware serial simultaneously — no SoftwareSerial hacks needed. Serial0 (D0\/D1) is also used for USB communication with your PC.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c\/div\u003e\n\u003c\/article\u003e\n\n\u003cscript\u003e\n(function(){\n  var ATTR = 'data-nznd-init';\n  function init(w){\n    if(w.getAttribute(ATTR)) return;\n    w.setAttribute(ATTR,'1');\n    w.addEventListener('click',function(e){\n      var tab=e.target.closest('.nznd__tab');\n      if(tab){\n        var t=tab.getAttribute('data-tab');\n        w.querySelectorAll('.nznd__tab').forEach(function(x){x.classList.remove('is-active');x.setAttribute('aria-selected','false');});\n        w.querySelectorAll('.nznd__panel').forEach(function(x){x.classList.remove('is-active');});\n        tab.classList.add('is-active');tab.setAttribute('aria-selected','true');\n        var p=w.querySelector('[data-panel=\"'+t+'\"]');if(p)p.classList.add('is-active');\n        return;\n      }\n      var btn=e.target.closest('.nznd__faq-q');\n      if(btn){\n        var item=btn.closest('.nznd__faq-item');\n        var open=item.classList.contains('is-open');\n        w.querySelectorAll('.nznd__faq-item').forEach(function(x){x.classList.remove('is-open');x.querySelector('.nznd__faq-q').setAttribute('aria-expanded','false');});\n        if(!open){item.classList.add('is-open');btn.setAttribute('aria-expanded','true');}\n      }\n    });\n  }\n  function tryInit(){\n    document.querySelectorAll('.nznd').forEach(init);\n  }\n  if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',tryInit);}else{tryInit();}\n  setTimeout(tryInit,300);\n  setTimeout(tryInit,1000);\n}());\n\u003c\/script\u003e","brand":"NZN Electronics","offers":[{"title":"1 Pack","offer_id":42837505572960,"sku":"MEGA2560-R3-CH340-TC-1","price":26.99,"currency_code":"NZD","in_stock":true},{"title":"2 Pack","offer_id":42837505605728,"sku":"MEGA2560-R3-CH340-TC-2","price":52.09,"currency_code":"NZD","in_stock":true},{"title":"5 Pack","offer_id":42837505638496,"sku":"MEGA2560-R3-CH340-TC-3","price":125.49,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/ArduinoMega2560ProductHero.jpg?v=1781052837","url":"https:\/\/www.nznelectronics.co.nz\/products\/arduino-mega2560-r3-ch340-type-c-development-board","provider":"NZN Electronics","version":"1.0","type":"link"}