{"product_id":"8-channel-5v-relay-shield-for-esp32-30-pin-devkit-v1","title":"8 Channel 5V Relay Shield for ESP32 30 Pin DEVKIT V1","description":"\u003ch1\u003e8 Channel 5V Relay Shield for ESP32 30-Pin DEVKIT V1\u003c\/h1\u003e\n\n\u003cp\u003eThe 8 Channel 5V Relay Board is a plug-and-play shield designed specifically for the ESP32 30-pin DEVKIT V1 development board. It provides eight independent 5V relays, each capable of switching up to 10A at 250VAC or 30VDC, making it perfect for home automation, industrial control, and IoT projects. With onboard optocouplers and driver transistors, it ensures reliable isolation between the ESP32 and high-power circuits.\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\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003e5V SPDT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Switching Load\u003c\/td\u003e\n\u003ctd\u003e10A @ 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eControl Interface\u003c\/td\u003e\n\u003ctd\u003eDirect stackable header for ESP32 30-pin DEVKIT V1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003ePer-channel optocoupler (PC817 or similar)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eRed LED per relay for status\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\u003eHome automation: Control lights, fans, or appliances with your ESP32 via Wi-Fi.\u003c\/li\u003e\n  \u003cli\u003eIoT plant watering system: Switch water pumps and solenoid valves on schedule.\u003c\/li\u003e\n  \u003cli\u003eSmart garage door controller: Automate door open\/close with relay logic.\u003c\/li\u003e\n  \u003cli\u003eIndustrial machine control: Interface with contactors for motor control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis board is engineered to stack onto ESP32 30-pin DEVKIT V1 boards. It may also work with other ESP32 dev boards that share the same pinout—always verify pin mapping before use. For non-ESP32 setups, the relay inputs can be manually wired to any 5V microcontroller like Arduino Uno or Mega using jumper wires. The relay coils require 5V, so ensure your power source can deliver sufficient current when activating multiple relays.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eStack the shield onto the ESP32 DEVKIT V1, aligning the 30-pin headers. The relays are active LOW: they energize when the corresponding GPIO outputs LOW (0). Each channel has a jumper to assign a GPIO pin. To avoid voltage drops, power the ESP32 via its USB port or an external 5V supply capable of at least 500mA if all relays are driven simultaneously. Always use appropriately rated wires and secure connections at the screw terminals.\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 ESP32 38-pin boards?\u003c\/summary\u003e\u003cp\u003eNo, this shield is specifically designed for the 30-pin DEVKIT V1. It will not directly fit 38-pin ESP32 boards due to different pin spacing and header layout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow much current can each relay handle?\u003c\/summary\u003e\u003cp\u003eEach relay is rated for up to 10A at 250VAC or 30VDC. Do not exceed these ratings to prevent overheating and damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I power the relays from the ESP32 5V pin?\u003c\/summary\u003e\u003cp\u003eYes, but if driving all 8 relays simultaneously, the total current draw may exceed the ESP32's onboard 5V regulator capacity. We recommend using an external 5V supply for full load.\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":53444944953709,"sku":"CDN-0015","price":790.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_a9738294-8ef3-4f59-8a71-6f52ad436001.jpg?v=1781512087","url":"https:\/\/compoden.com\/products\/8-channel-5v-relay-shield-for-esp32-30-pin-devkit-v1","provider":"Compoden","version":"1.0","type":"link"}