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Adafruit AirLift Shield ESP32 User Manual

Adafruit AirLift Shield ESP32
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IOr - This is IORef, the IO voltage we will communicate with and is required.
SPI Interface Pins
Both ESP32 and SD card use SPI to send and receive data. These pins are labeled CLK MISO MOSI and
have level shifting so you can use this shield with 3.3V or 5V microcontroller boards.
By default the 2x3 pin ICSP header on the right hand side is where the SPI signals are found.
ESP32 Control Pins
© Adafruit Industries https://learn.adafruit.com/adafruit-airlift-shield-esp32-wifi-co-processor Page 9 of 56

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Adafruit AirLift Shield ESP32 Specifications

General IconGeneral
MicrocontrollerESP32
InterfaceSPI
WiFi802.11 b/g/n
Voltage Level3.3V
TypeShield
SD Card SocketNo
Wireless ConnectivityWiFi
Input Voltage5V
Flash Memory4 MB
SRAM520 KB
Clock Speed240 MHz
USBNo
Compatible BoardsArduino Uno, Mega
AntennaCeramic
Digital I/O PinsNot directly accessible (used for SPI communication)