This is the Multi-Chassis Basic 4WD Kit, an easy to assemble and use robot chassis platform. 

This is a 35mm Concave Momentary Push Button similar to the ones you find on arcade games. 

This is a 35mm Concave Momentary Push Button similar to the ones you find on arcade games.

This is a 35mm Concave Momentary Push Button similar to the ones you find on arcade games.

This is a 35mm Concave Momentary Push Button similar to the ones you find on arcade games.

A small Audio Speaker that is ideal for radio and amplifier projects.

This cable allows you to access the pins on your car&rsquos OBDII connector. 

This is a 34' roll of thermal printing paper for use with our thermal printer. 

This will be a treat for your ears! The Hamburger Mini Speaker is a 3W economical speaker option for any project needing stand-alone sound. 

This is a simple three track magnetic card reader with serial output.

This Load Sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales. This sensor can measure up to about 110 pounds. 

Need range? The 2.4GHz Large Duck Antenna 5dBi with Reverse Polarized - SMA RF connector is perfect for you.

Have you ever wanted to control the flow of a liquid using your computer or microcontroller, but didn&rsquot know how? Well, here&rsquos how: The 12V solenoid controlled fluid valve.

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

O Seguidor de Linhas é uma placa longa composta por oito sensores IR. Este foi desenhado para seguir uma linha escura (spray ou fita isoladora) num fundo claro de cerca de 7,6 cm de largura ou menor . 

This is a fantastic find for SFE. A small, high-quality, quad-band, standard SMA terminated, cellular antenna.

The ESP8266 Thing is a breakout and development board for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. The Thing is low-cost and easy to use, and Arduino IDE integration can be achieved in just a few steps.

Do you have some liquids that you need to move? This fluid pump will move 350 gallons per hour! The SEAFLO mini water pump has a heavy duty 12V, 1.5Amp motor and a tough thermoplastic body. 

This 12V car adapter jack allows you to plug your project into your car&rsquos cigarette lighter for power on the go.

These are very common, high quality BJT NPN transistors made by ST Micro.

These are very common, high quality BJT, PNP transistors made by ST Micro.

This is a N-Channel Mosfet (5LN01SP) that operates at 50V, 0.1A and 7.8 Ohms.

This is a P-Channel Mosfet (5LN01SP) that operates at -50V, -0.07A and 23 Ohms.

This Power Diode (1N4004) contains a diffused junction, high current capability, low forward voltage drop, surge overload rating to 30A peak, low reverse leakage current, lead free finish and it is RoHS compliant.

This Silicon Diode (1N4148) has a fast switching speed, silicon epitaxial planar construction, lead free finish and it is RoHS compliant. 

This 2xAA battery holder puts a nice finishing touch on your battery powered project. 

Microsoft and SparkFun have teamed up to bring you some IoT (Internet of Things) fun. The Microsoft Azure IoT Starter Kit for the SparkFun Thing Development Board has been designed to help you seamlessly connect your device to the cloud with Microsoft Azure IoT.