{"product_id":"bi-colour-redgreen-12-led-bargraph-pack-of-2","title":"Bi-Colour (Red\/Green) 12-LED Bargraph - Pack of 2","description":"\u003cp\u003e\u003cstrong\u003eThis Bi-Colour LED Bargraph gives you a compact, breadboard-friendly way to add red, green, yellow, or mixed-colour linear indicators to your project.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eMake a small linear display with multiple colours using this elegant \u003cstrong\u003ebi-colour LED bargraph\u003c\/strong\u003e. Only \u003cstrong\u003e1.2\" long\u003c\/strong\u003e, it is quite visible but not so large it wont plug into a breadboard! \u003cstrong\u003e24 LEDs \u003c\/strong\u003eare contained in the plastic body, 12 red 14mcd and 12 13mcd green. Every bar has two LEDs inside so you can have it display red, green, yellow or with fast multiplexing any colour in between.\u003c\/p\u003e\n\u003cp\u003eThis display is bright, beautiful and funky with nice diffused rectangular lenses for a striking look. There are \u003cstrong\u003e14 pins\u003c\/strong\u003e, 7 on each side, with \u003cstrong\u003e0.1\"\u003c\/strong\u003e \u003cstrong\u003espacing \u003c\/strong\u003eso you can easily plug it into a breadboard with plenty of space for wiring left over.\u003c\/p\u003e\n\u003cp\u003eSince the display is multiplexed we suggest using 3 NPN transistors to drive the cathodes with microcontroller pins and then a 74HC595 to drive the 8 anodes.\u003c\/p\u003e\n\u003cp\u003eThere is a playground article about bargraph displays but that one is for non-multiplexed displays. You should also check out the tutorials introducing matrices for ideas on how to drive a multiplexed bargraph.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Mx8cvfNPfP0?si=7Bta2OD016jJGyTL\u0026amp;start=277\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBi-colour LED bargraph display with 24 total LEDs (12 red 14mcd, 12 green 13mcd)\u003c\/li\u003e\n\u003cli\u003eCompact 1.2\" length fits easily into breadboards\u003c\/li\u003e\n\u003cli\u003eDual LEDs per bar enabling red, green, yellow and intermediate colours via multiplexing\u003c\/li\u003e\n\u003cli\u003eBright, diffused rectangular lenses for striking visual appearance\u003c\/li\u003e\n\u003cli\u003e14 pins with 0.1\" spacing (7 pins per side)\u003c\/li\u003e\n\u003cli\u003eMultiplexed design requires 3 NPN transistors for cathode driving and 74HC595 shift register for anode control\u003c\/li\u003e\n\u003cli\u003eCompatible with microcontroller interfacing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 10mm x 30mm \u003c\/li\u003e\n\u003cli\u003e7mm thick\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDatasheet and pinouts\u003c\/li\u003e\n\u003cli\u003eModel number: KWL-R1230CDUGB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Bi-Colour (Red\/Green) 12-LED Bargraph - Pack of 2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":55919647752265,"sku":"xoa1787257357559","price":2.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/7185\/7993\/files\/bi-colour-redgreen-12-led-bargraph---pack-of-2_1.jpg?v=1787257362","url":"https:\/\/streetclad.shop\/products\/bi-colour-redgreen-12-led-bargraph-pack-of-2","provider":"My Store","version":"1.0","type":"link"}