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Adafruit Feather HUZZAH ESP8266
AdafruitESP8266
A portable ESP8266 WiFi development board with built-in USB and battery charging.
In stock
Specifications
8- Operating Voltage
- 3.3V logic, 500mA peak current output regulator with 3.3V input voltage for ESP8266 and peripherals.
- Logic Level
- 3.3V
- Clock Speed
- 80MHz or 160MHz
- Flash
- 4MB (32MBit)
- Ram
- Not specified in the datasheet
- Gpio Count
- 9 GPIO pins
- Dimensions
- 2.0" x 0.9" x 0.28"
- Connectivity
- USB, I2C, SPI, UART (Serial)
Pinout
14| Pin | Name | Functions | Notes |
|---|---|---|---|
| GND | GND | GND | Common ground for all power and logic |
| BAT | BAT | POWER | Positive voltage to/from the JST jack for optional LiPo battery |
| USB | USB | POWER | Positive voltage to/from the micro USB jack if connected |
| EN | EN | GND | 3.3V regulator's enable pin, pulled up and connect to ground to disable 3.3V regulator |
| 3V | 3V | POWER | Output from the 3.3V regulator, can supply 500mA peak current |
| GPIO #0 | GPIO_0 | GPIO | Red LED for general purpose blinking and bootloading detection |
| GPIO #2 | GPIO_2 | GPIO | Blue LED for bootloading debug and general purpose blinking, has a pullup resistor |
| GPIO #4 | GPIO_4 | I2C | Default I2C SDA pin |
| GPIO #5 | GPIO_5 | I2C | Default I2C SCL pin |
| GPIO #12 | GPIO_12 | SPIPWM | Same as SPI MISO, can be used for wake-up from deep sleep mode |
| GPIO #13 | GPIO_13 | SPI | Same as SPI MOSI |
| GPIO #14 | GPIO_14 | SPI | Same as SPI SCK |
| GPIO #15 | GPIO_15 | GPIO | Pulldown resistor, can be used for general purpose output |
| GPIO #16 | GPIO_16 | GPIO | Can wake up from deep sleep mode |
Interactive pinout
Highlight:
ESP8266
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