{"product_id":"esp8266-wi-fi-4-channel-relay-module-esp-12f-development-board-ac-dc-power-supply-module","title":"ESP8266 Wi-Fi 4-Channel Relay Module, ESP-12F Development Board, AC\/DC Power Supply Module","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eComputer\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ediymore\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLow Power Consumption\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDetails Page\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eTQFP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eQuantity\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDetails Page\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eModule\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eProduct Features:\u003c\/p\u003e\u003cp\u003e1. Features a proven and stable ESP-12F Wi-Fi module with 4 MB of flash memory;\u003c\/p\u003e\u003cp\u003e2. All I\/O pins of the Wi-Fi module and the UART programming port are exposed, facilitating secondary development;\u003c\/p\u003e\u003cp\u003e3. On-board AC-DC switching power supply module, supporting power supply inputs of AC 90–250 V, DC 7–30 V and 5 V;\u003c\/p\u003e\u003cp\u003e4. On-board reset button for the Wi-Fi module;\u003c\/p\u003e\u003cp\u003e5. The ESP-12F supports development tools such as Eclipse and Arduino IDE, and provides reference code for the Arduino development environment;\u003c\/p\u003e\u003cp\u003e6. Features four on-board 5V relays that output switching signals, suitable for controlling loads with operating voltages up to AC 250V\/DC 30V;\u003c\/p\u003e\u003cp\u003e7. Includes an on-board power indicator, one programmable LED and a relay indicator.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eInterface Description:\u003c\/p\u003e\u003cp\u003eProgramming Port:\u003c\/p\u003e\u003cp\u003eConnect the ESP8266’s GND, RX, TX and 5V pins to the GND, TX, RX and 5V pins of the external TTL serial module respectively.\u003c\/p\u003e\u003cp\u003eDuring programming, IO0 must be connected to GND; disconnect IO0 from GND once programming is complete;\u003c\/p\u003e\u003cp\u003eRelay Output Terminals:\u003c\/p\u003e\u003cp\u003eNC: Normally Closed terminal; shorted to COM before the relay is energised, left floating after energisation;\u003c\/p\u003e\u003cp\u003eCOM: Common terminal;\u003c\/p\u003e\u003cp\u003eNO: Normally Open terminal; left floating before the relay is energised, shorted to COM after energisation.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eIntroduction to GPIO Pins:\u003c\/p\u003e\u003cp\u003eSetting up the Arduino Development Environment\u003c\/p\u003e\u003cp\u003eThe ESP8266 supports development tools such as Eclipse and the Arduino IDE; using Arduino is relatively\u003c\/p\u003e\u003cp\u003esimpler. The following outlines the procedure for setting up the Arduino development environment:\u003c\/p\u003e\u003cp\u003e1. Install Arduino IDE 1.8.9 or the latest version;\u003c\/p\u003e\u003cp\u003e2. Open Arduino IDE, click File \u0026gt; Preferences in the menu bar. Once in Preferences, click ‘Add URL’ under ‘Additional Board Manager URLs’\u003c\/p\u003e\u003cp\u003eand enter:\u003c\/p\u003e\u003cp\u003ehttp:\/\/arduino.esp8266.com\/stable\/package_esp8266com_index.json,\u003c\/p\u003e\u003cp\u003e3. Click Tools → Board → Board Manager in the menu bar, then search for “ESP8266” and install the Arduino support package for\u003c\/p\u003e\u003cp\u003eESP8266 version 2.5.2 or the latest version\u003c\/p\u003e\u003cp\u003eNote: As the download URL is based overseas, connection speeds may be slow, and download errors may occur; simply try again a few times when the network connection improves.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eProgram Download:\u003c\/p\u003e\u003cp\u003e1. Use jumper caps or DuPont wires to connect the IO0 and GND pins. Prepare a TTL serial port module (e.g., FT232) and plug it into the computer’s\u003c\/p\u003e\u003cp\u003eUSB port. The connection method between the serial port module and the development board is as follows:\u003c\/p\u003e\u003cp\u003e2. Click Tools → Board in the menu bar, and select ESPINO (ESP-12 MODULE) as the board\u003c\/p\u003e\u003cp\u003e3. Open the program you wish to download, then click Tools → Port in the menu bar and select the correct port number.\u003c\/p\u003e\u003cp\u003e4. Click ‘Upload’; the program will automatically compile and download to the development board, as shown below:\u003c\/p\u003e\u003cp\u003e5. Finally, disconnect the connection between IO0 and GND. Power the development board back on or press the reset button to run the program.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eProduct List:\u003c\/p\u003e\u003cp\u003eRelay module *1\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1e44c7d9d2754c0eb3f1459a6f266ebci.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sc8e7d6419c1e40129f8557f52b0b30a2L.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S827b765e92a94b838d745a9357713d1ap.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S93229a9436594b6280a7b4de57c77299O.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sc9eea6a8cb5f4ebba70220c5ffced17fW.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S8c0ed9d5c11c49e18a885981152578eaE.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"4Ch","offer_id":55502959345963,"sku":"14:4044226#4Ch","price":37.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S1e44c7d9d2754c0eb3f1459a6f266ebci.webp?v=1788923403","url":"https:\/\/yoeruyo.com\/products\/esp8266-wi-fi-4-channel-relay-module-esp-12f-development-board-ac-dc-power-supply-module","provider":"Yoeruyo","version":"1.0","type":"link"}