This is a simple LED-illuminated tactile button with a white cap. It s just like a basic tactile button, but it lights up white! So now you can get visual feedback, or light up your project. These have a 12mm body and are rated for 50mA. They don t easily fit into a breadboard, but check below for a breakout board. We also have these in a a variety of colors, check below to see the others.
This Relay Shield from Evil Mad Scientist is a simple Arduino add-on that gives your Arduino the ability to control a single electromechanical relay for switching loads of up to 24VDC or 40VAC. Each Relay Shield comes equipped with a single pole – double throw (SPDT) sealed relay which can handle a current load of up to 5A. This means that when current is applied to the coil it throws a simple changeover switch, terminating the connection from the NC (Normally Closed) contact to ground and closing the NO (Normally Open) contact. Use them to switch high voltage/high current devices. As this is a shield, it is powered straight from the 5V power supplied by your Arduino, simply slide it into your Arduino or shield-compatible board (like the RedBoard) and you will be good to go!
Micro switches are often used as limit switches as it requires very little force to activate. This SPDT light force micro switch is rated for 125VAC 5A.
A solid state relay (SSR) is just what it sounds like; an IC that acts like a mechanical relay. They allow you to control high-voltage AC loads from lower voltage DC control circuitry. Solid state relays, however, have several advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there s no moving contacts, solid state relays can be switched much faster and for much longer periods without wearing out.
DIP switch are very similar to slide switch in terms of functionality. However, DIP switches are made in DIP packages which than can be plugged directly to any standard breadboard!