ESP8266 Servo Controller

NodeMCU ESP8266 Breakout Board

Arduino IDE

Visual Studio Code Extension for Arduino

SG90 Micro-servo motor

<h3 ><span >Introduction</span></h3><p >In this project we use ESP8266 in its NodeMCU form factor as a webserver and to create a webform to control the current position of the servo motor.</p><p >All the data of the webserver are saved on the SPIFFS memory of ESP8266.</p><h3 ><span >What is SPIFFS?</span></h3><p >SPIFFS is the original filesystem and is ideal for space and RAM constrained applications that utilize many small files and care about static and dynamic wear levelling and don’t need true directory support. Filesystem overhead on the flash is minimal as well. On the NodeMCU we have 4MB of flash out of which we can the size of the SPIFFS filesystem. In this project all the webserver files including html, css, and javascript are saved on a folder named data which is the folder name required for uploading to ESP8266 with SPIFFS uploader.</p><p ><span >I have a detailed tutorial about it in another project. </span><a href="https://bit.ly/2KUt7CF">Check it out. </a></p><h3 ><span >Hardware Setup</span></h3><ul ><li >Start by placing the NodeMCU on a breadboard.</li></ul><figure><img src=https://projects.arduinocontent.cc/9866e32c-33a2-4335-89bc-3bd65799e46b.png /><figcaption> </figcaption></figure><ul ><li >Place the servo motor and make the connections as shown.</li></ul><figure><img src=https://projects.arduinocontent.cc/ecb9c8c8-abf1-4b9c-9398-d507a310f55b.png /><figcaption> </figcaption></figure><ul ><li >Connections.</li></ul><p >3V3V ➡ VCC</p><p >GND ➡ GND</p><p >SIGNAL ➡ D2</p><h3 ><span >Software Setup</span></h3><ul ><li ><span >Visit my</span><a href="https://github.com/rahuladitya303/ESP8266_SERVO_CONTROLLER.git"> GitHub</a><span > page and download the  necessary files.</span></li></ul><ul ><li ><span >Download </span><a href="https://github.com/me-no-dev/ESPAsyncWebServer/archive/master.zip">ESPAsyncWebServer library</a></li></ul><ul ><li ><span >Download </span><a href="https://github.com/me-no-dev/ESPAsyncTCP/archive/master.zip">ESPAsyncTCP library</a></li></ul><ul ><li >Install libraries.</li></ul><ul ><li ><span >Download </span><a href="https://github.com/esp8266/arduino-esp8266fs-plugin/releases/download/0.5.0/ESP8266FS-0.5.0.zip">ESP8266 Filesystem Uploader</a></li></ul><ul ><li >Install the libraries and Filesystem uploader as shown below.</li></ul><div class="se-component se-video-container __se__float-none" contenteditable="false" style="width: 100%;"><figure style="width: 100%; height: 56.25%; padding-bottom: 56.25%; margin: 0px;"><iframe frameborder="0" allowfullscreen="" src="https://www.youtube.com/embed/poPoHdS-j-w" data-proportion="true" data-percentage="100%,56.25%" data-size="100%,56.25%" data-align="none" style="width: 100%; height: 100%;" data-index="0" data-file-size="0" data-origin="100%,56.25%"></iframe></figure></div><ul ><li >Compile the code and upload.</li></ul><ul ><li >Go to tools and use ESP8266 Sketch Data Upload tool to upload sketch data.</li></ul><p ><strong >Change</strong><strong >these</strong><strong >lines</strong><strong >of</strong><strong >code</strong><strong >as</strong><strong >per</strong><strong >yours:</strong></p><pre ><code ><span >const char *ssid = "REPLACE_WITH_YOUR_SSID";       <br></span><span >const char *password = "REPLACE_WITH_YOUR_PASSWORD"; <br></span><span >const uint8_t servoPin = D4;                <br></span></code></pre><h3 ><span >GitHub Repository link</span></h3><p ><a href="https://github.com/rahuladitya303/ESP8266_SERVO_CONTROLLER.git">https://github.com/rahuladitya303/ESP8266_SERVO_CONTROLLER.git </a></p><h3 ><span >For more details about how to install libraries and filesystem uploader checkout my other project</span></h3><p ><a href="https://create.arduino.cc/projecthub/rahuladitya303/esp8266-weather-station-with-spiffs-c01037">https://create.arduino.cc/projecthub/rahuladitya303/esp8266-weather-station-with-spiffs-c01037</a></p>

ESP8266 Servo Controller

A simple ESP8266 Web Server to control the position of servo motor.