accelerometer

Detect orientation and movement of your Tessel by measuring gravity / acceleration. 3-axis digital accelerometer; 12-bit resolution; selectable ±2g/±4g/±8g scales

ambient

The Ambient sensor can detect ambient light and sound levels. Clap to turn on the TV (paired with infrared) or know from a webapp if the lights are on at home. The microphone is optimized for detecting the ambient noise level in a room or building a sound-activated device. The ambient light sensor and can be used for detecting fine-grain brightness in a room.

climate

Detect humidity and temperature from your environment. Measure 0 to 70 °C (32 to 160 °F) with ±1° accuracy; Measure 0% to 80% relative humidity

diy

Build your own module! This single- or double-wide module comes with a guide on how to connect anything to Tessel. Protoboard module exposes SPI, I2C, UART, and GPIO; Ground and 3.3V rails make it easy to power components; For larger projects, available in a double-wide size (like the RFID module)

gps

Detect your global position. Helps you figure out where you are - and where you're going. Up to 1.8m accuracy; 66 search channels; 22 tracking channels; -165dBM sensitivity; Max 10Hz update rate

infrared

The Infrared (IR) Module can send and detect IR signals. Use a Tessel as a remote for your TV, radio, or even another Tessel. Transmits and receives from 30+ feet (line of sight); Detects max 38kHz; <a href='http://www.vishay.com/docs/82491/tsop382.pdf'>IR Receiver</a>; <a href='http://catalog.osram-os.com/catalogue/catalogue.do;jsessionid=7667A78B5A2190F007E2E148FD64A417?act=downloadFile&favOid=0200000200003577000200b6'>IR LED</a>

relay

Control high-current devices, such as power cords and appliances. Rated for 240V and 5A; AC or DC current; Secure and remove wires with the help of a ballpoint pen. No more loose wires or screwdrivers.

rfid

Read RFID cards/NFC. 13.56 MHx; Support CharlieCards, Clipper Cards, and other metro cards; Comes with a Mifare Classic RFID card

servo

Control up to 16 hobbyist/RC servos. Make it move! Control locks, wheels, cords, or anything else you can think of. Standard PWM output is compatible with servos of all sizes; Comes with an <a href='/datasheets/YinYanES3001.pdf'>ES3001 YinYan Servo</a> and a 5V external power jack (US-style plug)

button

Add a button to your Tessel. Press and release events; add several buttons if you want!

color sensor

This RGB Color Sensor is like an eyedropper tool for the real world. Find the red, green, blue, or clear levels of anything you point it at. The API gives you access to the raw RGBC data, color temperatures, and lux intensity.

Gesture sensor: APDS-9960

A gesture sensor. It can detect swiping motions in 4 directions. Also has an RGB sensor; Can detect near and far gestures

matrix keypad

Take basic keyboard input over Tessel for new interactions. Press and release evernts.

trellis keypad

Adafruit's Trellis 4x4 backlit keypad. This module provides a simple interface to the HT16K33 RAM Mapped LED driver that is the heart of the Adafruit Trellis system. Straight-forward button/LED access with row-column coordinates; Button press and release events; Brightness and blink control

led backpack-ht16k33

8x8 Matrix LED Display. Small LED matrix display. Intuitive API makes it easy to see outputs.

lego

If you have a <a href='https://tessel.io/modules#module-infrared'>Tessel infrared module</a>, you can use this software module to connect to LEGO infrared control! Works with the LEGO Power Functions infrared receiver. Control your LEGO creations from the internet!

motion detector

Detect motion– know when something's happening. Infrared-based technology; Events fired on motion

motor driver tb6612

Drive one or two small motors with Tessel. Use bigger motors than the Servo module is meant for.

RGB LED lights

Use Adafruit's individually addressable LED lights easily with this abstracted library. Easily create animations; Getting-started examples included; Works best with LED strips

OLED Display

OLED is a relatively new display technology, the same used in OLED TVs. Emits bright light (no backlight needed). 128x64px

Proximity Sensor HCSR04

Sense distance in centimeters with the ultrasound proximity sensor. Control volume with a wave of your hand. Great for robotics projects; Extremely intuitive interaction

Proximity Sensor SEN10737p

Sense distance in centimeters with the ultrasound proximity sensor. Control volume with a wave of your hand. Great for robotics projects; Extremely intuitive interaction

pulse sensor

Sense your pulse and fire events with each heartbeat. Non-invasive; Easy setup; Great way to get started with biosensing

Nokia Screen

A basic graphic LCD screen, this cheap display lets you add UI to your Tessel project. 48 rows x 84 columns; Black and white; Connection instructions included

Text to speech Emic2

Text to speech with a simple JS API.

thermal printer

A thermal printer, also known as a receipt printer. Print text, barcodes, bitmap graphics, and QR codes. Black and white.

thermocouple

A thermocouple for getting precise temperature, including immersed in liquids.