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Tessel runs JavasScript - no server necessary. Just like web or mobile development, you can use your own IDE and libraries to program hardware.

Tessel supports packages from npm to leverage the growing Node.js community and capabilities. That's HTTP, Twitter, web server, color, and async support right out of the box. Uploading new code is as easy as tessel push!

For more info about the Tessel platform click here.

How to Install

Follow the installation instructions detailed here

We've provided a repo containing an example cylon-tessel project.

$ git clone https://github.com/hybridgroup/cylon-example-tessel.git my-tessel-project
$ cd my-tessel-project
$ npm install
$ tessel run blink.js

If the blue light starts to blink, then you're all set!

How to Use


This small program lets you toggle an LED on and off.

var Cylon = require('cylon');

  connections: {
    tessel: { adaptor: 'tessel' }

  devices: {
    led: { driver: 'led', pin: 1 }

  work: function(my) {
    every((1).seconds(), function() { my.led.toggle() });


This small program shows how to use the Tessel Climate module.

var Cylon = require('cylon');

  connections: {
    tessel: { adaptor: 'tessel', port: 'A' }

  devices: {
    climate: { driver: 'climate-si7005' }

  work: function(my) {
    my.climate.on('error', function (err) {

    every((1).seconds(), function() {
      my.climate.readHumidity(function (err, humid) {
        console.log('Humidity:', humid.toFixed(4) + '%RH');
      my.climate.readTemperature('f', function (err, temp) {
        console.log('Degrees:', temp.toFixed(4) + 'F');

How to Connect

As mentioned in the How To Install section, connecting to the Tessel is easy. You just need to follow the provided instructions on the Tessel site.

If you've already done this, your Tessel should already be connected and ready to run Cylon.JS code.

Tessel Module Support

The Tessel has a variety of custom hardware modules specifically for use with Tessel. Cylon.js has support for the following Tessel modules:

GPIO & I2C Support

In addition to the custom Tessel modules, you can also use the standard Cylon.js GPIO and I2C drivers:

  • GPIO <=> Drivers
    • Analog Sensor
    • Button
    • IR Rangefinder
    • LED
    • MakeyButton
    • Maxbotix Ultrasonic Range Finder
  • I2C <=> Drivers
    • BlinkM
    • BMP180
    • HMC6352 Digital Compass
    • LCD
    • MPL115A2 Barometer/Thermometer
    • MPU6050


Available drivers for the Tessel platform are listed below.