Adafruit AirLift Shield ESP32 User Manual

Overview
Give your Arduino project a lift with the Adafruit AirLift Shield (https://adafru.it/F6v) - a shield that lets you
use the powerful ESP32 as a WiFi or BLE co-processor. You probably have your favorite Arduino-
compatible (like the Metro M4 (https://adafru.it/A5S) or the classic Metro
328 (https://adafru.it/METROXMETR)) that comes with its own set of awesome peripherals and lots of
libraries. But it doesn't have WiFi or BLE built in! So let's give that chip a best friend, the ESP32. This chip
can handle all the heavy lifting of connecting to a WiFi network and transferring data from a site, even if it's
using the latest TLS/SSL encryption (it has root certificates pre-burned in).
© Adafruit Industries https://learn.adafruit.com/adafruit-airlift-shield-esp32-wifi-co-processor Page 4 of 56

Adafruit AirLift Shield ESP32 Specifications

General

Microcontroller	ESP32
Interface	SPI
WiFi	802.11 b/g/n
Voltage Level	3.3V
Type	Shield
SD Card Socket	No
Wireless Connectivity	WiFi
Input Voltage	5V
Flash Memory	4 MB
SRAM	520 KB
Clock Speed	240 MHz
USB	No
Compatible Boards	Arduino Uno, Mega
Antenna	Ceramic
Digital I/O Pins	Not directly accessible (used for SPI communication)