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DEVICE in android IDE is: GENERIC ESP8266 Module

![[Pasted image 20240619141159.png]]

Technical Specification Value
Supply voltage (USB) 5V DC
Input/output voltage 3.3V DC
Clock frequency 80 MHz / 160 MHz
Instructions RAM 32 kb
Data RAM 96 kb
External flash memory 4 MB
GPIO digital pins 17 (configurable as a PWM at 3.3V)
ADC analog pin 1 (voltage range: 0 - 1V)
UART 2

Getting Started

  1. Install ESP8266 Board Package:

    • Open Arduino IDE.
    • Go to File > Preferences.
    • Add http://arduino.esp8266.com/stable/package_esp8266com_index.json to "Additional Board Manager URLs".
    • Go to Tools > Board > Board Manager.
    • Search for and install esp8266.

  2. Connect ESP8266 to Computer:

    • Use a USB cable to connect your ESP8266 to the computer.

  3. Select Board and Port:

    • Go to Tools > Board and select your ESP8266 board
    • (e.g., "NodeMCU 1.0" or generic)
    • Go to Tools > Port and select the appropriate COM port. (might be automatic)

  4. Write and Upload Sketch:

    • Write your sketch in the Arduino IDE.
    • Click the upload button to transfer the sketch to the ESP8266.

Uploading files to serve (In flash memory)

(Still figuring o) Uploading files to the ESP8266 module, such as HTML, CSS, JavaScript, and other resources, involves using a feature called SPIFFS (SPI Flash File System) or LittleFS. These filesystems allow you to store and serve files directly from the module's Flash memory, eliminating the need for an external SD card. Here's a step-by-step guide on how to upload files to ESP8266 using the Arduino IDE:

ARDUINO IDE 1.x

https://github.com/earlephilhower/arduino-esp8266littlefs-plugin?tab=readme-ov-file

ARDUINO IDE 2.x

https://github.com/earlephilhower/arduino-littlefs-upload

  1. Prepare Your Files:

    • Create or gather the files (e.g., index.html, style.css, script.js) you want to upload to ESP8266.
    • These files should be organized in a folder structure that mirrors how they will be accessed in your code (e.g., /index.html, /css/style.css, /js/script.js).

  2. Convert Files to Binary:

    • Before uploading, these files need to be converted to binary format and stored in a special folder within your Arduino sketch directory.
    • Create a folder named data in your Arduino sketch folder (where your .ino file is located). If the data folder doesn't exist, create it manually.

Notes:

  • File Size Limitations: Individual file sizes should be within the limits of your ESP8266's Flash memory. Avoid very large files as they may consume too much space or cause performance issues.
  • SPIFFS vs. LittleFS: Choose the filesystem based on your ESP8266 board and requirements. LittleFS generally offers better performance and efficiency for larger filesystems.

By following these steps, you can effectively manage and serve web content directly from your ESP8266 module's Flash memory without the need for external storage devices. This approach is convenient for applications where simplicity and integration are key considerations.