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learn PARTS IN YOUR KITS need for arduino(part-3)

Optocoupler - This allows you to connect two circuits that do not share a common power supply. Internally there is a small LED that, when illuminated, causes a photoreceptor inside to close an internal switch. When you apply voltage to the + pin, the LED lights and the internal switch closes. The two outputs replace a switch in the second circuit Piezo - An electrical component that can be used to detect vibrations and create noises. Photoresistor - (also called a photocell, or light dependent resistor). A variable resistor that changes its resistance based on the amount of light that falls on its face. Male header pins :- These pins fit into female sockets, like those on a breadboard. They help make connecting things much easier. Potentiometer  :- A variable resistor with three pins. Two of the pins are connected to the ends of a fixed resistor. The middle pin, or wiper, moves across the resistor, dividing it into two halves. When the external sides of the potentiometer are connec...
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learn PARTS ON YOU KIT need for arduino(part-2)

Diode  :- Ensures electricity only flows in one di-rection. Useful when you have a motor or other high current/voltage load in your circuit. Diodes are polarized, meaning that the direction that they’re placed in a circuit maters. Placed one way, they allow current to pass through.Placed the other way, they block it. The anode side generally connects to the point of higher energy in your circuit. The cathode typically connects to the point of lower energy, or to ground. The cathode is usually marked with a band on one side of the component’s body.Gels (red, green, blue) - These filter out difer-  ent wavelengths of light. When used in con-junction with photoresistors, they cause the sensor to only react to the amount of light in the filtered color.  H-bridge :- A circuit that allows you to control the polarity of the voltage applied to a load, usually a motor. The H-bridge in the kit is an intigrated circuit, but it could also be constructed with a number of discrete components.   Jum...
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