LED Bar Graph, Indoor PRICE IN PAKISTAN

Application/Usage
Indoor
Brand
Shri Enterprises
operating Temperature
-35 ~ +85 Degree
Peakwave Length
625-640nm
Pixels
25mm
Color
Black and White
Led bars can be used for a variety of visual effects such as indication of sound volume, charge state of batteries, etcetera. Here we deal with a simple monochrome 10-segment led bar. The simplicity of this bar lies in the fact that it consists of a parallel series of leds embedded in a plastic block. The simplicity is expressed by the absence of controlling chips. As a consequence a 10-segment bar has 20 pins: a row of 10 anodes and a row of 10 cathodes. In the present paper we discuss two ways of wiring a led bar with an Arduino. The most straightforward way is pin-to-pin wiring. As this method takes ten pins of the Arduino a second method is illustrated that needs only three pins. Our assistant here is the 74HC595 shift register. The advantages of implementing shift registers is, first that the occupation of only three output pins of the Arduino leaves all other pins available for other input/output functions, and second that the 74HC595 makes it possible to daisy-chain endless series of led bars without much additional effort