104020006 Seeed Studio

Grove - LED Bar Grove LED Bar is comprised of a 10 segment LED gauge bar and an MY9221 LED controlling chip. It can be used as an indicator for remaining battery life, voltage, water level, music volume or other values that require a gradient display. There are 10 LED bars in the LED bar graph: one red, one yellow, one light green, and seven green bars. Demo code is available to get you up and running quickly. It lights up the LEDs sequentially from red to green, so the entire bar graph is lit up in the end. Want to go further? Go ahead and code your own effect. Version Product Version Changes Released Date Grove LED Bar V1 Initial June 2014 Grove LED Bar V2 Improved the power supply Oct 2015 Features Input Voltage: 3.3V/5V Each LED segment can be controlled individually via code Intuitive display Flexible power option, supports 3-5.5DC Available demo code Suli-compatible Library Tip More details about Grove modules please refer to Grove System Specification Parameter Value/Range Operating voltage 3.V Operation Temperature -20 to +80 Peak Emission Wavelength-RED(Current 20mA) 630-637nm Peak Emission Wavelength-Yellow Green(Current 20mA ) 570-573nm Peak Emission Wavelength-Yellow(Current 20mA ) 585-592nm Luminous Intensity Per Segment-RED(Current 20mA ) 50-70mcd Luminous Intensity Per Segment-Yellow Green(Current 20mA ) 28-35mcd Luminous Intensity Per Segment-Yellow(Current 20mA ) 45-60mcd LED segment 10 Size 40mm * 20mm