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Resistor Kit - 1/4W (500 total)

Our new branded resistor kit comes with 25 each of 20 different resistor values (including 0Ω links!). All of these resistors are stapled into a tri-fold pack and clearly labeled

$13.95

Fingerprint Scanner - 5V TTL (GT-511C1)

We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project.

$49.85

Optical Dust Sensor - GP2Y1010AU0F

Sharp’s GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the reflected light of dust in air. It is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems.

$19.95

Audio Jack 3.5mm

Low profile 3.5mm stereo audio jack.

$1.95

Alcohol Gas Sensor MQ-3

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.

$7.95

Bluetooth SMD Module - RN-42-HID

This is an SMD (surface mount device) bluetooth module. Does not come with pins. This is the same Roving Networks Bluetooth module that you already know and love, but it comes firmware-configured for the HID protocol. HID, or “Human Interface Device,” is the communication protocol used for computer peripherals such as keyboards, mice and joysticks.

$25.95

RF Link Receiver - 4800bps (315MHz)

These wireless receivers work with our 315MHz transmitters. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only receivers, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair.

$6.95

RF Link Transmitter - 315MHz

These wireless transmitters work with our 315MHz receivers. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only transmitters, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair.

$6.50

Methane CNG Gas Sensor - MQ-4

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.

$6.95

LED - Ultraviolet

This is a simple 5mm LED with an interesting array of applications. This UV LED can be used for counterfeit detection (bills, credit cards, documents, etc), sterilization, pesticide, black lights, sun burns, the list goes on. Please wear eye protection when using these LEDs.

$1.50

Load Sensor - 50kg

This load sensor is the same one found in digital bathroom scales (you know, the ones you use in January for your New Year’s resolutions, and then forget about a month later). This sensor can measure up to about 110 pounds / 50kg. Check the video below for a simple explanation on how these work and how to use them.

$15.25

Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates

New! Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second output We believe this is theUltimate GPS module, so we named it that. It's got everything you want and more:

$52.15

Touch screen (Nintendo DSL digitizer)

This resistive touch screen can be used with a stylus or fingertip and is easy to use with a microcontroller. You can put it over a paper overlay for a touch control panel or attach it to an LCD to DIY a touch-activated display.

$12.95

Conductive Rubber Cord Stretch Sensor + extras!

Measuring stretch forces isn't easy - unless you have some conductive rubber cord! This cord is 2mm diameter, and 1 meter long, made of carbon-black impregnated rubber. Usually this material is used for EMF gasketing, but its also very fun to play with.

$14.50

SMA to uFL/u.FL/IPX/IPEX RF Adapter Cable

This RF adapter cable is super handy for anyone doing RF work. Often times, small electronics save space by having a pick-and-placeable u.FL connector (also called uFL, IPEX, IPAX, IPX, MHF, and AM). But most antennas have SMA or RP-SMA connectors on them. This little cable will bridge the two!

$6.20

USB MicroB Plug Breakout Board

5 pins with a vertical microUSB connector for all your prototyping needs.

$6.20

Circular LED Bargraphs - Blue

They consist of 16 blue LEDs arranged so that each quarter of the circle has a common ground and four anode pins, resulting in 20 pins total on the device. Because they’re simply a bunch of cleverly packaged LEDs, they’re just as easy to use as our LED bargraphs. These are great for indicating the position of a rotary encoder!

$14.95

RFM22B-S2 SMD Wireless Transceiver - 434MHz

The RFM22B is a low-cost ISM FSK transceiver module which offers communication at 433MHz ISM and adjustable output power of up to +20 dBm. The wide operating voltage range of 1.8–3.6 V and low current consumption makes the RFM22B an ideal solution for battery powered applications.

$13.95

Sparkfun's RFID Starter Kit

This kit includes everything you need to get started with RFID. It includes a USB RFID board, ID-12LA RFID reader, and 2 RFID cards.

$69.95