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This board is a unique board recommended by a SparkFun customer. When playing with SD, you sometimes need to view what the SPI traffic is doing, whether for hacking or debugging. The SD Sniffer allows you to hook up an external device, such as a logic analyzer or microcontroller, to view what signals are being passed back and forth. Insert one side into a regular SD socket and a SD card into the SD holder, simple as that. Learn More

Wide measuring range (2.5 to 99999 RPM) with a large 5 digit LCD display. Included with this product is a length of reflective tape that can be applied to items being tested. Learn More

This instrument changes the 9V battery voltage to 250V/500V/1000V DC Voltage and uses a digital bridge to make insulation resistance measurements. It features a user-friendly interface, high range, backlight display, data hold and auto power off. Learn More

This dedicated LC meter offers wider inductance and capacitance ranges than other ‘do-it-all’ meters available on the market. A workbench essential for developing audio crossover circuits, switchmode power supplies and RF circuits. This meter includes a large 30mm, 3.5 digit display and is capable of reading capacitance from 2nF to 1000µF on polarised (electrolytic) and non-polarised capacitors, and inductance from 2mH to 20H. Supplied with high quality silicon rubber croc clip and test probe leads, rubber holster. Features High accuracy inductance & capacitance ranges Jumbo 1999 count readout Battery included Supplied with quality silicon rubber test leads, rubber holster. Learn More