{"product_id":"ethernet-w5100-shield-network-expansion-board-with-micro-sd-card-slot","title":"Ethernet W5100 Shield Network Expansion Board with Micro SD Card Slot","description":"\u003ch1\u003eEthernet W5100 Shield Network Expansion Board for Arduino with Micro SD Card\u003c\/h1\u003e\n\u003cp\u003eThe Ethernet W5100 Shield is a network expansion board for Arduino that provides stable 10\/100 Mbps Ethernet connectivity and a Micro SD card slot for data storage. It allows your Arduino to connect to the internet for IoT applications and log sensor data directly to SD cards. The integrated W5100 chip ensures reliable performance with minimal setup.\u003c\/p\u003e\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\u003eEthernet Controller\u003c\/td\u003e\n\u003ctd\u003eW5100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNetwork Speed\u003c\/td\u003e\n\u003ctd\u003e10\/100 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMicro SD Card Support\u003c\/td\u003e\n\u003ctd\u003eUp to 32 GB (FAT32 format)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eSPI (Arduino headers)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (supplied by Arduino)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Arduino shield size (68.6 x 53.3 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eIoT weather station that uploads data to a cloud server\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eWeb‑controlled home automation system with relay modules\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/arduino-motion-data-logger-kit-timestamp-events-and-display-count-on-ole\"\u003eData logger for temperature, humidity, or motion sensor readings\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eNetworked security camera with image capture stored on SD card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis shield is designed for Arduino Uno, Mega 2560, and Leonardo boards, plugging directly into the standard headers. It uses 5V logic and communicates via SPI, allowing stacking with other shields if the chip select pins are managed. Typical pairings include sensor breakout boards (DHT22, BMP280) for environmental monitoring.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eSimply align the shield with the Arduino headers and press firmly. No additional wiring is needed. The Ethernet controller uses CS pin 10 by default, while the Micro SD card uses CS pin 4. Ensure these pins are not used by other devices when stacking shields.\u003c\/p\u003e\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\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Mega?\u003c\/summary\u003e\u003cp\u003eYes, it works with Arduino Mega 2560. The shield fits the Mega's headers and uses the same SPI pins (50, 51, 52), making it fully compatible.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use Ethernet and SD card simultaneously?\u003c\/summary\u003e\u003cp\u003eAbsolutely. They are controlled via separate chip select pins (10 for Ethernet, 4 for SD), so you can read\/write to the SD card while maintaining a network connection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat SD card size is recommended?\u003c\/summary\u003e\u003cp\u003eWe recommend using a micro SD card between 4 GB and 32 GB formatted as FAT32. Higher capacities are not guaranteed to work.\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":53444962451821,"sku":"CDN-0445","price":630.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_cb70eac1-1947-41fc-96f4-e2c4dc73f159.jpg?v=1781512577","url":"https:\/\/compoden.com\/products\/ethernet-w5100-shield-network-expansion-board-with-micro-sd-card-slot","provider":"Compoden","version":"1.0","type":"link"}