Enable Web Serial; Install Wippersnapper - Adafruit Feather HUZZAH ESP8266 Manual

Next, download and install the SiLabs CP2104 Driver so your operating system can
"talk to" your Feather HUZZAH ESP8266. There are drivers for Windows, Mac, and
Linux.

Enable Web Serial

We've developed a web-based tool for you to install WipperSnapper on your
ESP8266. This tool uses the Web Serial functionality of Google Chrome.
You will have to use the Google Chrome or other Chromium-based browser for
this to work.
Safari, Firefox, and other browsers are not supported at this time because this
tool requires Web Serial and only Chromium is supporting it to the level needed
at present.

Install WipperSnapper

In a Chrome browser, visit the
adafru.it/Yse).
©Adafruit Industries
Click here to download the CP2104
USB Driver
https://adafru.it/vrf
WipperSnapper Firmware Uploader
At this step, you'll need to enable the
Serial API, which is really easy.
Visit chrome://flags from within Chrome.
Find and enable the Experimental Web
Platform features
Restart Chrome
website (https://
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