Share a USB 3 device between two hosts or switch between two devices on one host. The bidirectional USB 3 Mux allows either a single USB device (or multiple devices when using a USB hub) to be switched between two USB hosts (computer) or using its...

The SparkFun Beginner Parts Kit is a small container of parts frequently used by beginning (or even experienced) hobbyists that gives you all of the basic through-hole components you will need to get started playing with embedded projects. These are the...

Looking for another way to keep your Raspberry Pi cool? Hook up this 5V Mini Cooling Fan and prevent your hard-working Pi from overheating! Of course, it's also great for use with any small computer or FPGA or motor driver or anything...

This device is compatible with any 5v microcontroller. The buzzer can be installed as an alarm for any system you want and only requires three wires to get this unit up and running. When holding the board with the pins facing towards you, the left most...

These are high quality Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay's coil is rated up to 12V, with a minimum switching voltage of 5V. The contacts are rated up to 5A (@250VAC,...

This thumbstick is an analog joystick - more accurate and sensitive than just 'directional' joysticks - with a 'press in to select' button. Since it's analog(10k potentiometers), you'll need two analog reading pins on your microcontroller to determine X...

The Raspberry Pi has an on-board audio jack, which is super handy for all kinds of sound effects and speech, just plug and go! However, for when you want better audio for music playback, a USB audio card can greatly improve the sound quality and volume...

Get the most out of your regulators, transistors and other TO-220 packaged chips by clipping on a heat-sink. Your transistor or regulator may advertise it can handle high currents but when multiplied by the drop voltage, the Wattage may be too high for...

Nothing makes a project harder to maintain than a lot of loose wiring. That's why we like to use terminal blocks whenever making PCB-to-Wire connections. These particular 3.5mm terminal blocks are our favorite: big enough for a range of wire gauges, easy...

After a long day out harvesting in the terminal block fields, we've returned with a veritable bounty of these very nice and compact 2.54mm/0.1" terminal blocks in a variety of sizes. Our harvest of terminal blocks is great news since nothing makes...

Connect this to that without soldering using these handy mini alligator clip test leads. 15" cables with alligator clip on each end, color coded. You get 12 pieces in 6 colors. Strong and grippy, these always come in handy! We often use these in...

Hey want to hear a really loud noise? Apply 3V to 5V to this buzzer module and you'll be rewarded with a loud 2KHz BEEEEEEEEEEEEEEEEEP. Unlike a plain piezo, this buzzer does not need an AC signal. Inside is a piezo plus the driver circuitry that makes...

A passive buzzer emits a tone when a voltage is applied across it. It also requires a specific signal to generate a variety of tones. Specifications Rated Voltage: DC 5V; Working Voltage: 6-24VDC Resonance Frequency: 2.8 +/- 0.5KHz; Sound Pressure:...

Continuous beep - Breadboard friendly!

This is hot! Literally! Apply 5-12VDC and the stainless steel fibers in this heating fabric will warm up, creating a little heating pad. On one hand, it's just a gigantic resistor. On the other hand, it's flexible, light, and can be wrapped around a...

Listen up! This 1.1" (~30mm) diameter speaker is the perfect addition to any breadboard-based audio project where you need 8 Ohm impedance, and have 0.2W or less of power. The two pins are 15mm / 0.6" apart and fit perfectly in a breadboard or perfboard...

Looking for another way to keep your Raspberry Pi cool? Hook up this 5V Mini Cooling Fan and prevent your hard-working Pi from overheating! Of course, it's also great for use with any small computer or FPGA or motor driver or anything...