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Adafruit AirLift Shield ESP32 User Manual

Adafruit AirLift Shield ESP32
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Guide Contents
Guide Contents
Overview
Pinouts
Power Pins
SPI Interface Pins
ESP32 Control Pins
SD Card Interface
LEDs
Prototyping Area
Assembly
Installing Standard Headers
Stack Alert!
CircuitPython WiFi
CircuitPython Microcontroller Pinout
CircuitPython Installation of ESP32SPI Library
CircuitPython Usage
Internet Connect!
What's a secrets file?
Connect to WiFi
Requests
HTTP GET with Requests
HTTP POST with Requests
Advanced Requests Usage
WiFi Manager
CircuitPython BLE
CircuitPython BLE UART Example
Adafruit AirLift ESP32 Shield Wiring
Update the AirLift Firmware
Install CircuitPython Libraries
Install the Adafruit Bluefruit LE Connect App
Copy and Adjust the Example Program
Talk to the AirLift via the Bluefruit LE Connect App
Arduino WiFi
Library Install
First Test
Arduino Microcontroller Pin Definition
WiFi Connection Test
Secure Connection Example
JSON Parsing Example
Adapting Other Examples
Upgrade External ESP32 Airlift Firmware
External AirLift FeatherWing, Shield, or ItsyWing
Upload Serial Passthrough code for Feather or ItsyBitsy
External AirLift Breakout
Code Usage
Install esptool.py
© Adafruit Industries https://learn.adafruit.com/adafruit-airlift-shield-esp32-wifi-co-processor Page 2 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)