{"product_id":"p2-eval-led-matrix-add-on-board","title":"P2 Eval LED Matrix Add-on Board","description":"\u003ch5\u003eP2 Eval LED Matrix Add-on Board Overview:\u003c\/h5\u003e\n\u003cp\u003eThe P2 Eval LED Matrix Add-on Board board features an 8 x 7 grid of Charlieplexed green LEDs. Your Propeller 2 multicore microcontroller projects may use this board to display text of graphics across 56 LEDs using only 8 I\/O pins.\u003c\/p\u003e\n\u003cp\u003eCharlieplexing allows for control of more LEDs with fewer I\/O pins by taking advantage of the one-way current flow properties of diodes (including Light Emitting Diodes), along with the tri-state properties of the Propeller 2 I\/O pins.\u003c\/p\u003e\n\u003cp\u003eTo light multiple LEDs, rely on the fast operating speed of the Propeller 2. While Charlieplexing doesn’t actually light the LEDs simultaneously, it switches them on and off fast enough to trick the human eye into believing they are on simultaneously.\u003c\/p\u003e\n\u003cp\u003eWhen Propeller 2 code switches each LED on and off at least 50 times a second (50 Hz), flickering should not be noticeable and the LEDs will appear to be permanently on. (For the Propeller 2 this switching speed is no problem as each I\/O could switch faster than 180 MHz, which is plenty of time to turn on every LED if needed).\u003c\/p\u003e\n\u003cp\u003eThis board features a pass-through socket that stacks on top of a 2x6 accessory header on the Propeller 2 Evaluation Board (#64000). It is also compatible with a \u003ca href=\"\/products\/p2-edge-module-breadboard\/\" rel=\"noopener\" target=\"_blank\"\u003eP2 Edge Module Breadboard (#64020)\u003c\/a\u003e or \u003ca href=\"\/products\/p2-edge-mini-breakout-board\/\" rel=\"noopener\" target=\"_blank\"\u003eP2 Edge Mini Breakout Board (#64019)\u003c\/a\u003e with a \u003ca href=\"\/products\/p2-edge-module\/\" rel=\"noopener\" target=\"_blank\"\u003eP2 Edge Module (#P2-EC)\u003c\/a\u003e installed.\u003c\/p\u003e\n\u003ch5\u003eP2 Eval LED Matrix Add-on Board Features:\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e56 LEDs in a 8x7 grid\u003c\/li\u003e\n\u003cli\u003eOnly required 8 Propeller 2 I\/O pins for full LED control\u003c\/li\u003e\n\u003cli\u003eTotal current consumption 4 mA, thanks to Charlieplexing\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions: 1.6 x 0.8 in (4.1 x 2 cm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSee the Product Guide download for I\/O pin assignments and lookup table showing the I\/O pin states for controlling each LED. Product guide, RoHS CE and UKCA Declarations of Conformity are available under the Downloads tab.\u003c\/p\u003e\n\u003cp\u003ePCBs assembled, tested, and completed in the USA\u003c\/p\u003e\n\u003ch4\u003eResource Links\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.google.com\/document\/d\/1gn6oaT5Ib7CytvlZHacmrSbVBJsD9t_-kmvjd7nUR6o\/edit?usp=sharing\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eParallax Propeller 2 Documentation (Rev B Silicon)\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.google.com\/spreadsheets\/d\/1usUcCCQVp3liAqENX9rvX-XVqJomMREhKYExM_taG0A\/edit?usp=sharing\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eParallax Propeller 2 Instructions\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/github.com\/parallaxinc\/propeller\" rel=\"noopener noreferrer\" target=\"_blank\"\u003ePropeller 2 Repository for community example code contributions\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/forums.parallax.com\/discussion\/169367\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eP2-ES Eval Board support thread\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":53397224980789,"sku":"64006C","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/6307\/2821\/files\/8b29c3e2-64006c2.jpg?v=1787781833","url":"https:\/\/shop.parallax.com\/products\/p2-eval-led-matrix-add-on-board","provider":"Parallax Inc","version":"1.0","type":"link"}