ESP8266 WiFi Module (4MB Flash)

ESP8266 WiFi Module (4MB Flash)

The ESP8266 is a popular Wi-Fi module designed for IoT (Internet of Things) applications. The 4MB Flash version is commonly used due to its balance between memory size.

Specifications:

• Chip: ESP8266
• Flash Memory: 4MB (32 Mbit)
• RAM: 160KB (of which 80KB is available for user applications)
• Processor: Tensilica L106 32-bit RISC microprocessor
• Clock Speed: 80 MHz (up to 160 MHz with overclocking)
• Wi-Fi Standards: 802.11 b/g/n
• Wi-Fi Range: Up to 100 meters (328 feet) in open space; range may vary depending on environmental conditions
• Antenna: Onboard PCB antenna or external antenna (depending on module variant)
• Operating Voltage: 3.0V to 3.6V (typically 3.3V)
• Current Consumption:
  • Active Mode: ~70-150 mA (varies with Wi-Fi activity)
  • Deep Sleep Mode: <10 µA
• GPIO Pins: 17 GPIOs (some pins have multiple functions and not all are available for general use)
• Communication Interfaces:
  • UART: For serial communication (TX/RX)
  • SPI: For interfacing with other peripherals
  • I2C: For connecting I2C devices (typically requires software implementation)
  • PWM: Pulse-width modulation
  • ADC: 10-bit ADC for analog input
• Programming Interface: UART (for flashing firmware)
• Development Platforms: Compatible with Arduino IDE, PlatformIO, and other development environments
• Software Support:
  • Firmware: AT commands firmware or custom firmware (e.g., ESP8266 SDK, Arduino core for ESP8266)
  • Libraries: Various libraries available for different development environments

Typical Modules and Development Boards:

• ESP-01: Basic module with minimal GPIOs and a small footprint.
• NodeMCU: Development board with USB interface and additional components for easy prototyping.
• Wemos D1 Mini: Compact development board with a built-in USB interface and additional features.

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