Sparkfun

Magnetic Ring 5mm (3/16") Rare Earth Magnet This little beauty is a 5mm (3/16") rare earth magnet ring. It is composed of Neodymium/Iron/Boron (NdFeB). These magnets are curiously strong and make for...

Relay SPDT Sealed 12V, 5A (@250VAC, 30VDC) These are high-quality Single Pole - Double Throw (SPDT) sealed relays. You can use them to switch high voltage, and/or high current devices.This...

Relay SPDT Sealed - 20A - JQX-15F This is a miniature heavy-duty DC electromagnetic single pole, double throw, sealed relay.When you apply current to the coil it throws a simple changeover switch,...

Solid State Relay, 40A, SSR-40DA - Sparkfun COM-13015 This solid-state relay (SSR) allows you to control high-current AC loads from a lower voltage DC control circuitry.Solid-state relays have...

SparkFun Resistor Kit - 1/4W - SparkFun COM-10969 Resistors are a good thing, in fact, they’re actually crucial in a lot of circuit designs. The only problem seems to be that resistors...

Slide Potentiometer, X-Large POT, Linear Taper, 10K A simple slide potentiometer can go a long way. Rated at 10kOhm and 0.5W. Comes with solder tab connections.The tapered profile for the dimensional...

Rotary Potentiometer - 10k Ohm, Linear An adjustable potentiometer can open up many interesting user interfaces.Just give the pot a turn and the resistance changes.This device works as a variable...

Slide Potentiometer, Small POT, Linear Taper, 10K A simple slide potentiometer can go a long way.Rated at 10KOhm and 0.1W.Comes with solder tab connections.This pot has an overall travel of 20mm and...

Slide Potentiometer, Medium POT, Linear Taper, 10K A simple slide potentiometer can go a long way. Rated at 10KOhm and 0.1W.Comes with solder tab connections.The pot has an overall travel of 30mm and...

Thermoelectric Cooler - 40mm x 40mm Thermoelectric coolers (TEC or Peltier) create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, they can be used...

Heatsink for TO-220, Bolt-On These small heat sinks are designed to fit TO-220 components perfectly and are ideal to keep your regulators cool.This part is a black anodized bolt on type with a 2.5W...

Heatsink, Small, Black Anodised These tiny little black anodised heatsinks are perfect for cooling off small surface-mount components such as the A4988 stepper driver. Dimensions: Length: 7.6mm (0...