- make 'em light, glow, blink and flash!
LEDs offer an energy-efficient, low maintenance form of indication or illumination. Being a semiconductor, LED has peculiar characteristics. Pay attention to the current and voltage that you use. Too little current and voltage will result in little or no light at all. Too much current and voltage can shorten the lifespan or damage the LED.
A summary of different types of LEDs that we offer:
Through hole: Commonly used as indicators. Requires small amount of current, typically around 20 mA. Most of the time, you will need to use a current limiting resistor. They work great on PCBs or breadboards and don't require heatsink
USB stick: Surface mounted LEDs on PCB which can be plugged directly to USB ports. They come with current limiting resistors on board. You don't need to worry about voltage and current as it works with the standard USB power. Commonly used as emergency lighting
High power: Requires currents of hundreds of mA to more than 1A. It is important to use a constant current. Usually used for lighting and requires a proper heatsink. They are really, really bright!
Digital Addressable RGB: Also known as "smart" LEDs - the most configurable and fun to play with. They come with a constant current driver chip for example WS2801, WS2812B and LPD8806. Other than the usual power and ground connection, they have data pin for control signal from microprocessor to control the colour and brightness. Multiple LEDs can be daisy-chained and each LED can be controlled independently. These LEDs are commonly used as decorative lights, light painting or other nice visual effects