Espruiono 8266 Playground

Prerequisites

• Installed Node.JS v11
• Installed Python
• Installed Micro controller driver
• (optional) Espruino IDE
• Cloned repository
• esptool (can be installed via python's pip)

Installation on macOS

Having brew installed:

# Note: python and git should be pre-installed on macOS
# If not:
brew install python

brew install n
n latest

pip install esptool

Installation on Windows

Having chocolatey installed:

choco install git
choco install python2
choco install nodejs

pip install esptool

npm install --global --production windows-build-tools
npm config set msvs_version 2015 --global

Flashing the hardware

cd device
npm install
npm run device:flash
npm run espruino:reset

(optional) Connecting the Espruino IDE

• Settings -> Communications -> Baud rate: 115200
• Connect to /dev/cu.SLAB_USBtoUART or COM#

First example code

Paste the following code in the left editor pane:

const LED = NodeMCU.D4;

let on = false;
setInterval(function() {
  on = !on;
  LED.write(on);
}, 500);

Upload the code and the blue LED indicator should blink.

Let's go!

Build the backend

Run the following in a console, to create a serial connection that uploads the code to the micro controller:

npm run espruino:console

Now use another terminal to build to backend:

# Build once...
npm run build

# ... or keep build task in watch mode
npm run build:watch

Run the frontend

Use a different terminal for running the frontend:

cd <project>/web-ui
npm install
npm start

Resources

• Simple WebSocket tool
• Espruino WebSocket Server