{"product_id":"red-7-segment-clock-display-12-digit-height","title":"Red 7-segment clock display - 1.2\" digit height","description":"\u003cp\u003e\u003cstrong\u003eThe Large 4-Digit Seven-Segment Display gives your project bold red numeric output for clocks, timers, counters, and readouts, with colon dots and an extra indicator dot built in.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eI like big seven-segment displays and I cannot lie! Design a clock, timer or counter into your next project using our pretty, candy-bar sized \u003cstrong\u003e4-digit seven-segment display\u003c\/strong\u003e. These bright crisp displays are good for adding numeric output. Besides the four 7-segments there is a top right dot (perhaps useful as a degrees symbol) and two sets of colon-dots (good for time-based projects).\u003c\/p\u003e\n\u003cp\u003eThese are \u003cstrong\u003e38mcd\u003c\/strong\u003e bright per segment. Each segment is made of two LEDs in series for even colouring (check the datasheet for a diagram). You can drive these with less current to get the same brightness to save power, or crank them up to\u003cstrong\u003e 20mA\u003c\/strong\u003e and have them at their brightest.\u003c\/p\u003e\n\u003cp\u003eThese displays are multiplexed, common-cathode. What that means it that you can use a 74HC595 or just \u003cstrong\u003e8 microcontroller pins\u003c\/strong\u003e if you can spare them to control the 8 anodes (7-seg + decimal) at about \u003cstrong\u003e~15mA\u003c\/strong\u003e each, and then connect NPN transistors or a \u003cstrong\u003eTPIC6B595\u003c\/strong\u003e to the cathodes to sink the \u003cstrong\u003e8*20mA = ~120mA\u003c\/strong\u003e maximum per digit.\u003c\/p\u003e\n\u003cp\u003eWe strongly recommend getting our backpack version, which comes with an LED driver on the back. This version is just the raw display, and requires a lot more work to get running!\u003c\/p\u003e\n\u003cp\u003eThese come in a bright red colour, we also have many other sizes and colours!\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/zG_O0Clu4jI?si=8H5jMVhHP9gP5hjK\u0026amp;start=110\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4-digit seven-segment display, candy-bar sized\u003c\/li\u003e\n\u003cli\u003e38mcd brightness per segment\u003c\/li\u003e\n\u003cli\u003eEach segment contains two LEDs in series for even colouring\u003c\/li\u003e\n\u003cli\u003eTop right dot (degrees symbol)\u003c\/li\u003e\n\u003cli\u003eTwo sets of colon-dots for time-based projects\u003c\/li\u003e\n\u003cli\u003eMultiplexed, common-cathode configuration\u003c\/li\u003e\n\u003cli\u003eAdjustable brightness (5mA to 20mA per segment)\u003c\/li\u003e\n\u003cli\u003eMaximum 120mA per digit\u003c\/li\u003e\n\u003cli\u003eRequires 8 microcontroller pins or 74HC595 shift register for control\u003c\/li\u003e\n\u003cli\u003eRequires NPN transistors or TPIC6B595 for cathode connection\u003c\/li\u003e\n\u003cli\u003eBright red colour\u003c\/li\u003e\n\u003cli\u003eAdditional sizes and colours available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a Common Cathode LED display\u003c\/li\u003e\n\u003cli\u003eDimensions: 120mm x 41mm\u003c\/li\u003e\n\u003cli\u003eWeight: 50.8g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDatasheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Red 7-segment clock display - 1.2\" digit height\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":46375123288121,"sku":"sdq1787257085229","price":5.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0795\/9176\/8121\/files\/red-7-segment-clock-display---12-digit-height_1.jpg?v=1787257093","url":"https:\/\/myoutfitstore.shop\/products\/red-7-segment-clock-display-12-digit-height","provider":"My Store","version":"1.0","type":"link"}