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ADAFRUIT 2821 WiFi Module
The Feather HUZZAH ESP8266 is a compact, lightweight WiFi development board measuring approximately 2.0 inches by 0.9 inches by 0.28 inches (51mm x 23mm x 8mm). It features an ESP8266 microcontroller running at 80 MHz with 3.3V logic, 4MB of flash memory, and built-in WiFi 802.11 b/g/n capability. The board includes a CP2104 USB-Serial converter supporting high-speed uploads at 921600 baud, with automatic reset functionality for easy programming. It offers 9 GPIO pins that can be used as I2C or SPI, plus 1 analog input (max 1.0V). Power can be supplied via micro USB or a 3.7V LiPo battery, which is internally rechargeable with a built-in charger and status indicator. The board also features a power/enable pin, reset button, and pin indicators with onboard status LEDs (red for general use and blue for bootloading/debugging). Four mounting holes facilitate easy integration into projects. The lightweight design weighs approximately 9.7 grams.
ADAFRUIT 2821 WiFi Module Specifications:
- Dimensions: 2.0 x 0.9 x 0.28 inches (51mm x 23mm x 8mm)
- Weight: approximately 9.7 grams
- Microcontroller: ESP8266 @ 80MHz, optional 160MHz
- Flash Memory: 4MB
- Power Supply: Micro USB, 3.7V LiPo Battery (via JST jack)
- Charging Circuit: Built-in 100mA Lipoly charger with status LED
- GPIO Pins: 9 general purpose (used for I2C and SPI with bitbanging capability)
- Analog Input: 1 input, max 1.0V
- USB-Serial Converter: CP2104 supporting up to 921600 baud
- Power/Enable Pin: YES, disables 3.3V regulator when pulled low
- Reset Button: YES
- Onboard LEDs: Red (general purpose), Blue (bootloading/debugging)
- Mounting Holes: 4
- Logic Level: 3.3V
- Current per GPIO: Max 12mA
Buy the Adafruit Series Feather WiFi Module: 2821
Get your Adafruit Feather HUZZAH ESP8266 online today and enjoy fast, reliable WiFi connectivity combined with versatile GPIO, analog inputs, and built-in battery charging. Perfect for portable IoT applications, it features a lightweight design, easy USB programming at 921600 baud, and onboard status LEDs for quick debugging. Power the board via micro USB or a rechargeable LiPo battery, with four mounting holes for seamless integration. Whether you're a maker or a professional, this compact module accelerates your smart device development.
Buy Adafruit Feather HUZZAH ESP8266 now and experience unmatched reliability and performance for your IoT projects.
Frequently Asked Questions
Where can I buy ADAFRUIT 2821?
You can click on the BUY or RFQ button to purchase 2821 from an authorized ADAFRUIT distributor.
How do I troubleshoot issues or seek technical support for part 2821?
You can download the 2821 datasheet or visit the ADAFRUIT website for support.
Who is the manufacturer of 2821?
ADAFRUIT