{"product_id":"75mm-bars-12v-digital-rgb-led-pixels-strand-of-21-ws2801","title":"75mm Bars - 12V Digital RGB LED Pixels (Strand of 21) (WS2801)","description":"\u003cp\u003e\u003cstrong\u003eThese 12V RGB Pixel Bars provide bright, individually addressable lighting in a rugged, waterproof format, making them ideal for signs, architectural lighting, decorative displays, and large-scale animated installations.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eRGB Pixels\u003c\/strong\u003e are digitally-controllable lights you can set to any colour, or animate. Each plastic PVC 'pixel bar' contains \u003cstrong\u003e3 RGB LEDs\u003c\/strong\u003e and a controller chip soldered to a PCB. The pixel is then 'flooded' with epoxy to make it \u003cstrong\u003ewaterproof\u003c\/strong\u003e. These are fairly large pixels but they have a lot of nice mounting options, such as two plastic flanges on the ends with 0.15\"\/4mm diameter holes and also some sticky foam tape on the back for easy attachment. They're typically used to make outdoor signs. Compared to our other LED dots, these are much bigger and much brighter, good for larger scale installations. They'd also make great large RGB 7-segment displays which is why we have them in strands of 21 not 20.\u003c\/p\u003e\n\u003cp\u003eThe pixels are connected by a \u003cstrong\u003e4-conductor cable\u003c\/strong\u003e. +12VDC, ground, data and clock. Data is shifted down from one pixel to the next so that you can easily cut the strand or attach more onto the end.\u003c\/p\u003e\n\u003cp\u003eEach dot is digitally controlled, with an internal \u003cstrong\u003e8-bit PWM LED driver\u003c\/strong\u003e (24-bit colour for 16 million different shades). The pixels must be clocked by a microcontroller, we have an example code linked below that works on an Arduino, it should be simple to adapt it to any other microcontroller.\u003c\/p\u003e\n\u003cp\u003eThe pixels use\u003cstrong\u003e 3 x 5050 RGB LEDs\u003c\/strong\u003e, with a \u003cstrong\u003e120 degree beam width\u003c\/strong\u003e. All of the LEDs are controlled at once so you cannot have one pixel with the three LEDs different colours. (Colour control is per single rectangular 3-LED pixel only) The total max brightness of all LEDs is about \u003cstrong\u003e4000mcd\u003c\/strong\u003e. (Please note: mcd ratings of LEDs are notoriously inflated by most LED sellers, so be extra-sceptical when reviewing LED ratings!)\u003c\/p\u003e\n\u003cp\u003eSold by the strand, each strand has \u003cstrong\u003e21 pixels\u003c\/strong\u003e in series! Each strand has\u003cstrong\u003e two JST SM 3-pin connectors \u003c\/strong\u003eso you can connect multiple strands in a row, as many as you wish, just watch for how much current they want. The two power wires are brought out separately to make wiring easier, a 2.1mm terminal block adapter is handy here to attach a DC power supply. We have a 12V\/5A supply that should be able to drive 3 or more strands (depending on current use). The LEDs are constant-current driven so you'll have even colours through-out the strand as long as you have a stable 12V supply\u003c\/p\u003e\n\u003cp\u003eYou can drive these with an Arduino using any two microcontroller digital pins, check this library which also has example code to demonstrate the strands and be sure to read our very detailed tutorial on usage!. Since these are nearly identical in how they work to t he 36mm pixels, that guide will get you blinking.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/HkWsPJS3oDQ?si=MDFK96aVOCTDnVfO\u0026amp;start=7\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e21 RGB pixels per strand, each containing 3 × 5050 RGB LEDs\u003c\/li\u003e\n\u003cli\u003eDigitally controllable with 8-bit PWM driver (24-bit colour, 16 million shades)\u003c\/li\u003e\n\u003cli\u003eWaterproof epoxy-flooded PVC construction\u003c\/li\u003e\n\u003cli\u003eBright output at approximately 4000mcd total per pixel\u003c\/li\u003e\n\u003cli\u003e120 degree LED beam width\u003c\/li\u003e\n\u003cli\u003ePlastic flanges with 4mm mounting holes on each pixel\u003c\/li\u003e\n\u003cli\u003eAdhesive foam tape backing for easy attachment\u003c\/li\u003e\n\u003cli\u003e4-conductor cable connection (+12VDC, ground, data, clock)\u003c\/li\u003e\n\u003cli\u003eDaisy-chain compatible with JST SM 3-pin connectors\u003c\/li\u003e\n\u003cli\u003eCompatible with Arduino and other microcontrollers\u003c\/li\u003e\n\u003cli\u003eRequires stable 12V DC power supply\u003c\/li\u003e\n\u003cli\u003eSuitable for outdoor signs and large-scale installations\u003c\/li\u003e\n\u003cli\u003eIdeal for creating RGB 7-segment displays\u003c\/li\u003e\n\u003cli\u003eConstant-current LED driver ensures even colour throughout strand\u003c\/li\u003e\n\u003cli\u003eStrands can be cut and extended as needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e78mm x 18mm (3.1\" x 0.7\") sticks 9mm deep (0.35\")\u003c\/li\u003e\n\u003cli\u003e4mm\/0.15\" mounting holes 86mm\/3.4\" apart\u003c\/li\u003e\n\u003cli\u003e75mm \/ 3\" apart on the strand\u003c\/li\u003e\n\u003cli\u003e21 pieces per strand\u003c\/li\u003e\n\u003cli\u003eThese pixels use a WS2801 chip for full 24 bit colour, constant-current drive\u003c\/li\u003e\n\u003cli\u003e12VDC power, 60mA maximum per pixel (LEDs on full white)\u003c\/li\u003e\n\u003cli\u003e2-pin SPI-like protocol\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrightness per pixel: 4000 mcd combined (we'll try to get a datasheet for the LEDs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\nWS2801 Datasheet (The chip inside each pixel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 75mm Bars - 12V Digital RGB LED Pixels (Strand of 21) (WS2801)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":52217197789472,"sku":"yuw1787257218366","price":35.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/3231\/3120\/files\/75mm-bars---12v-digital-rgb-led-pixels-strand-of-21-ws2801_1.jpg?v=1787257223","url":"https:\/\/www.elmwoodbasket.shop\/products\/75mm-bars-12v-digital-rgb-led-pixels-strand-of-21-ws2801","provider":"My Store","version":"1.0","type":"link"}