Part number Units Description Datasheet 7400 4 quad 2-input NAND gate HC/HCT 741G00 1 single 2-input NAND gate HC/HCT 7401 4 quad 2-input NAND gate with open collector outputs LS…

The reed switch is an electrical switch operated by an applied magnetic field. It consists of a pair of contacts on ferrous metal reeds in a hermetically sealed glass envelope.…

An infrared receiver, or IR receiver, is a device that sends information from an infrared remote control to another device by receiving and decoding signals. Basically, the receiver outputs a…

A Hall effect sensor is a transducer that varies its output voltage in response to a magnetic field. Hall effect sensors are used for proximity switching, positioning, speed detection, and…

A mercury tilt switch is a switch which opens and closes an electrical circuit when it is tilted at certain angles. When it is tilted a small amount of the…

A photoresistor (or light-dependent resistor, LDR, or photocell) is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity.…

The MQ-2 gas sensor has high sensitivity to LPG, Propane and Hydrogen, also could be used to detect Methane, it is low cost and suitable for several different applications. Characteristics…

I recently was browsing electronic kits on various websites and noticed that there seemed to be a few component testers that can be bought, some are assembled and others need…

The 4067 was one of the IC’s that I wanted to connect up to various microcontrollers as it looke dextremely useful, here is a quick description from one of the datasheets…

Another sparkfun design here for a simple board that takes a 4-9V input voltage and outputs a selectable 1.8V or 3.3V regulated voltage. Based on the LM317 again   Bill…