Sparkfun

This is a simple-to-use [hydrogen gas](http://en.wikipedia.org/wiki/Hydrogen_gas) sensor, suitable for sensing hydrogen concentrations in the air. ...

This is an evaluation board for the MLX90614 IR Thermometer. The sensor is connected to an ATmega328 running at 3.3V with a STK500 (Arduino) 8MHz ...

Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the...

This AT407 basic tilt switch can easily be used to detect orientation. Inside the can is a ball that makes contact with the pins when the case is ...

Use this simple IR receiver for infrared remote control of your next project. With low power consumption and an easy to use package, it mates well...

A simple flex sensor 2.2\" in length. As the sensor is flexed, the resistance across the sensor increases. Patented technology by Spectra Symbol - ...

This is a basic RFID tag that functions within the MIFARE Classic® 1K guidelines. You can use these for all sorts of identification and sensing ap...

This is a basic RFID tag that functions within the MIFARE Classic® 1K guidelines. You can use these for all sorts of identification and sensing ap...

The SparkFun RFID USB Reader is a simple to use, USB to serial base unit for the ID-3LA, ID-12LA, and ID-20LA readers. Simply plug a reader into th...

This new version adds two standoff holes as well as an extra decoupling capacitor. The ADXL345 is a small, thin, low power, 3-axis MEMS accelerome...

This very long force sensitive resistor - over 2 feet - has a sensing area of ​​0.25x24\". This FSR from Interlink Electronics will vary its resis...

The MPL115A1 is a digital barometer that uses MEMs technology to give accurate pressure measurements between 50kPa and 115kPa. We stock the SPI in...

Melexis\' MLX90614ESF-BAA is an infrared thermometer designed for non-contact temperature sensing. An internal 17-bit ADC and a powerful DSP contr...

This is a breakout board for Honeywell\'s HIH-4030 humidity sensor. The HIH-4030 measures relative humidity (%RH) and delivers it as an analog outp...

This is a simple, thumbnail-size RFID tag. These tags are great for sensing presence, identification, etc., and they\'re small, so they can be eas...

This is a glass, cylindrical RFID tag; it\'s very similar to those [implanted into pets](http://en.wikipedia.org/wiki/Pet_chip) for identification...

This is a simple-to-use [liquefied petroleum gas (LPG)](http://en.wikipedia.org/wiki/Liquefied_petroleum_gas) sensor, suitable for sensing LPG (co...

This is a simple-to-use [compressed natural gas (CNG)](http://en.wikipedia.org/wiki/Compressed_natural_gas) sensor, suitable for sensing natural ga...

This is a simple-to-use [Carbon Monoxide (CO)](http://en.wikipedia.org/wiki/Carbon_monoxide) sensor, suitable for sensing CO concentrations in the...

This is a force sensitive resistor with a square, 1.75x1.5\", sensing area. This FSR will vary its resistance depending on how much pressure is be...

Photo interrupter, photogate, photodiode, phototransistor, whatever you want to call it, this sensor is composed of an infrared emitter on one upr...

Breakout board for the 3 axis ADXL335 from Analog Devices. This is the latest in a long, proven line of analog sensors - the holy grail of accelero...

The Minisense 100 from Measurement Specialties is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low fre...

The Minisense 100 from Measurement Specialties is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low fre...