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Adafruit Feather HUZZAH with ESP8266+I2C adapter+I2C cable+I2C sensor

$ 21.85$ 76.80


  • 1 x Analog input (1.0V max)
  • 9 x GPIO (3.3V logic), which can also be used for I2C or SPI
  • 2 x UART pins
  • 2 x 3-6V power inputs, reset, enable, LDO-disable, 3.3V output

At the Feather HUZZAH’s heart is an ESP8266 WiFi microcontroller clocked at 80 MHz and at 3.3V logic. This microcontroller contains a Tensilica chip core as well as a full WiFi stack. You can progam the microcontroller using the Arduino IDE for an easy-to-run Internet of Things core. We wired up a USB-Serial chip that an upload code at a blistering 921600 baud for fast development time. It also has auto-reset so no noodling with pins and reset button pressings.

To make it easy to use for portable projects, Adafruit added a connector for any of their 3.7V Lithium polymer batteries and built in battery charging. You don’t need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch over to USB power when its available.

We took a certified module with an onboard antenna, and plenty of pins, and soldered it onto our designed breakout PCBs. We added in:

  • Reset button
  • User button that can also put the chip into bootloading mode,
  • Red LED you can blink
  • Level shifting on the UART and reset pin
  • 3.3V out, 500mA regulator (you’ll want to assume the ESP8266 can draw up to 250mA so budget accordingly)
  • Two diode-protected power inputs (one for a USB cable, another for a battery)

The module itself is FCC certified and contains the ESP8266 chip with 64 KiB of instruction RAM, 96 KiB of data RAM, and 4 MB of QIO FLASH (32 Megabits)

Additional information

I2C Sensor

Adafruit Huzzah with ESP8266 + I2C Adapter + I2C Cable, Proximity and Ambient Light, Temperature and Humidity, Pressure Sensor, Accelerometer, Altimeter and Temperature sensor, Methane Gas Sensor, A/D converter, D/A converter


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