{"id":84815,"date":"2019-05-06T13:43:34","date_gmt":"2019-05-06T13:43:34","guid":{"rendered":"https:\/\/randomnerdtutorials.com\/?p=84815"},"modified":"2022-10-13T15:48:24","modified_gmt":"2022-10-13T15:48:24","slug":"esp8266-pinout-reference-gpios","status":"publish","type":"post","link":"https:\/\/randomnerdtutorials.com\/esp8266-pinout-reference-gpios\/","title":{"rendered":"ESP8266 Pinout Reference: Which GPIO pins should you use?"},"content":{"rendered":"\n

This article is a guide for the ESP8266 GPIOs: pinout diagrams, their functions and how to use them.<\/p>\n\n\n

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\"ESP8266<\/figure><\/div>\n\n\n

The ESP8266 12-E chip comes with 17 GPIO pins. Not all GPIOs are exposed in all ESP8266 development boards, some GPIOs are not recommended to use, and others have very specific functions.<\/p>\n\n\n\n

With this guide, you’ll learn how to properly use the ESP8266 GPIOs and avoid hours of frustration by using the most suitable pins for your projects.<\/p>\n\n\n\n

Note: not all GPIOs are accessible in all development boards, but each specific GPIO works in the same way regardless of the development board you\u2019re using. If you\u2019re just getting started with the ESP8266, we recommend checking out our ESP8266 Guides<\/a>.<\/p>\n\n\n\n

ESP8266 12-E Chip Pinout<\/h2>\n\n\n\n

The following figure illustrates the ESP8266 12-E chip pinout. Use this diagram if you\u2019re using an ESP8266 bare chip in your projects.
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\"ESP8266<\/a><\/figure><\/div>\n\n\n

Note: <\/strong> not all GPIOs are accessible in all development boards, but each specific GPIO works in the same way regardless of the development board you\u2019re using. If you\u2019re just getting started with the ESP8266, we recommend reading our guide: Getting Started with the ESP8266<\/a>.<\/p>\n\n\n\n

At the moment, there are a wide variety of development boards with the ESP8266 chip that differ in the number of accessible GPIOs, size, form factor, etc\u2026 <\/p>\n\n\n\n

The most widely used ESP8266 boards are the ESP-01<\/a>, ESP8266-12E NodeMCU Kit<\/a>, and the Wemos D1 Mini<\/a>. For a comparison of these board, you can read this guide: ESP8266 Wi-Fi Development Boards comparison<\/a>.<\/p>\n\n\n\n

ESP8266-01 Pinout<\/h2>\n\n\n\n

If you’re using an ESP8266-01 board, you can use the following GPIO diagram as a reference.<\/p>\n\n\n

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\"ESP-01<\/a><\/figure><\/div>\n\n\n

ESP8266 12-E NodeMCU Kit<\/h2>\n\n\n\n

The ESP8266 12-E NodeMCU kit pinout diagram is shown below.<\/p>\n\n\n

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\"ESP8266<\/a><\/figure><\/div>\n\n\n

Wemos D1 Mini Pinout<\/h2>\n\n\n\n

The following figure shows the WeMos D1 Mini pinout.<\/p>\n\n\n

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\"WeMos<\/a><\/figure><\/div>\n\n\n

Download PDF with ESP8266 Pinout Diagrams<\/h3>\n\n\n\n

We’ve put together a handy PDF that you can download and print, so you always have the ESP8266 diagrams next to you:<\/p>\n\n\n\n

Download PDF Pinout Diagrams \u00bb<\/a> <\/p>\n\n\n\n

ESP8266 Peripherals<\/h2>\n\n\n\n

The ESP8266 peripherals include:<\/p>\n\n\n\n