podoglyph / tessel_api

Learning NodeJS with a wifi connected Tessel 2

tessel_api

A continuation of learning NodeJS and React with a Tessel 2 board. This app is a simple API to access on-board leds, a stream from a usb camera, and any additional sensors connected to the device. Once deployed, the Tessel 2 will connect wirelessly to a LAN and may run on battery power. A simple admin panel shows real-time data from sensors and a live video stream. An instance of MongoDB will record the state of connected assets.

Below are two live examples where the Tessel 2 is deployed on battery power and sending a live video stream and temperature data from a basic temperature sensor over a wireless LAN.

The first example demonstrates the remote capability. The project may be deployed anywhere around a home, office, store, or warehouse, and even outside as long as the device can reach the LAN.

Example 1

This second example shows how the user can toggle the onboard leds through the UI. Each click on the React client calls out to the Node server which then sends a request to the Tessel 2 to toggle a led. If successful, the callback updates the Mongo database and sends a json response back to the client. If the led fails to toggle, the database and client will not be altered. With this baseline architecture in place the Tessel API is ready to transmit data from additional sensors.

Example 2

Tessel 2 Assembly

The Stack

(In Progress. Additions to come.)

• NodeJS
• Express
• MongoDB & Mongoose with mLab
• ReactJS

The Firmware

• Tessel 2

Setup

• git clone <tessel_api> && cd tessel_api
• yarn install
• cd client && yarn install
• Create a file .env in the project root and add environment variables for your database, e.g.
  • DB_USER=<your_DB_user>
  • DB_PASS=<your_DB_password>

License

This project is licensed under the MIT License.