Overview

If you want to keep the firmware on your ESP32 WiFi co-processor up-to-date, you'll need to update the firmware on the ESP32. 

You're going to to turn your board into a USB-to-Serial converter to flash new firmware to your ESP32  - no extra hardware required

This process is mostly setup and should take from 10 to 20 minutes.

This guide is not for when you are running Arduino/MicroPython/FreeRTOS/etc *directly* on the ESP32, this is only for using the ESP32 as an AirLift/WiFi co-processor!

Why would I update my ESP32's firmware?

Using an ESP32 as a WiFi co-processor is a way to connect your CircuitPython and Arduino projects to the internet. Having WiFi managed by a separate chip means your code is simpler, you don't have to cache socket data, or compile in & debug an SSL library. 

Adafruit ships a variety of products which use the ESP32 as a WiFi co-processor with a variant of the Arduino nina-fw core. This firmware is programmed to the ESP32 at the Adafruit factory. If you wish to update to a newer version of nina-fw, you'll need to program it to the ESP32.

Parts

External ESP32 Co-Processors

If you already have a project which uses a popular microcontroller (like the ATMega328 or ATSAMD51), you can easily add WiFi by using an externally connected ESP32 module.

Adafruit AirLift – ESP32 WiFi Co-Processor Breakout Board

PRODUCT ID: 4201
Give your plain ol' microcontroller project a lift with the Adafruit AirLift - a breakout board that lets you use the powerful ESP32 as a WiFi co-processor. You probably...
$12.95
IN STOCK

Adafruit AirLift FeatherWing – ESP32 WiFi Co-Processor

PRODUCT ID: 4264
Give your Feather project a lift with the Adafruit AirLift FeatherWing - a FeatherWing that lets you use the powerful ESP32 as a WiFi co-processor. You probably have your...
$12.95
IN STOCK

Adafruit AirLift Shield - ESP32 WiFi Co-Processor

PRODUCT ID: 4285
Give your Arduino project a lift with the Adafruit AirLift Shield - a shield that lets you use the powerful ESP32 as a WiFi co-processor. You probably have your favorite...
$15.95
IN STOCK

Adafruit AirLift Bitsy Add-On – ESP32 WiFi Co-Processor

PRODUCT ID: 4363
Give your ItsyBitsy project a lift with the Adafruit AirLift Bitsy Add-On - a daughterboard that lets you use the powerful ESP32 as a WiFi co-processor. You probably have your...
$14.95
IN STOCK

ESP32 Co-Processor All-in-One Boards

Don't want to add extra hardware to your project? Consider grabbing a board which has an ESP32 WiFi co-processor built-in.

Adafruit PyPortal - CircuitPython Powered Internet Display

PRODUCT ID: 4116
PyPortal, our easy-to-use IoT device that allows you to create all the things for the “Internet of Things” in minutes. Make custom touch screen interface...
OUT OF STOCK

Adafruit Metro M4 Express AirLift (WiFi) - Lite

PRODUCT ID: 4000
Give your next project a lift with AirLift - our witty name for the ESP32 co-processor that graces this Metro M4. You already know about the Adafruit Metro...
$34.95
IN STOCK

Materials

1 x USB Cable
USB cable - USB A to Micro-B - 3 foot long
This guide was first published on Sep 30, 2019. It was last updated on Sep 30, 2019. This page (Overview) was last updated on Nov 12, 2019.