{"id":13296686,"url":"https://github.com/s-light/LEDBoard_4x4_16bit","last_synced_at":"2025-03-10T09:32:03.459Z","repository":{"id":81176831,"uuid":"97092290","full_name":"s-light/LEDBoard_4x4_16bit","owner":"s-light","description":"LEDBoard with 4x4 Nichia SMD-LEDs with controller for individual 16bit-channel control","archived":false,"fork":false,"pushed_at":"2020-09-21T15:36:00.000Z","size":55758,"stargazers_count":2,"open_issues_count":0,"forks_count":0,"subscribers_count":4,"default_branch":"master","last_synced_at":"2024-05-01T13:12:52.142Z","etag":null,"topics":["16bit","attribution","constant-current","creative-commons","hardware-designs","led","matrix","tlc5971"],"latest_commit_sha":null,"homepage":"","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/s-light.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2017-07-13T07:18:04.000Z","updated_at":"2024-05-01T13:12:52.143Z","dependencies_parsed_at":"2023-03-13T20:09:00.543Z","dependency_job_id":null,"html_url":"https://github.com/s-light/LEDBoard_4x4_16bit","commit_stats":null,"previous_names":[],"tags_count":6,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/s-light%2FLEDBoard_4x4_16bit","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/s-light%2FLEDBoard_4x4_16bit/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/s-light%2FLEDBoard_4x4_16bit/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/s-light%2FLEDBoard_4x4_16bit/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/s-light","download_url":"https://codeload.github.com/s-light/LEDBoard_4x4_16bit/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":242823697,"owners_count":20191046,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["16bit","attribution","constant-current","creative-commons","hardware-designs","led","matrix","tlc5971"],"created_at":"2024-07-29T17:20:54.442Z","updated_at":"2025-03-10T09:32:03.412Z","avatar_url":"https://github.com/s-light.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"\u003c!--lint disable maximum-line-length--\u003e\n\u003c!--lint disable list-item-spacing--\u003e\n\u003c!--lint disable list-item-indent--\u003e\n\n# LED-Board 4x4 16bit\n![LED-Board front](./export/3d/LEDBoard_4x4_16bit_3d_rendering.png)\n\na LED-Matrix Board that can be combined seamlessly to bigger areas.  \nIt uses the [TI TLC5971](http://www.ti.com/product/TLC5971) Constant-Current LED-Driver Chip with 16bit dimming resolution.  \n\nThe [original](https://github.com/s-light/LEDBoard_4x4_16bit/tree/Nichia_NSSM032A) LED-footprint was for [Nichia NSSM032A](http://www.nichia.co.jp/en/product/led_product_data.html?type=%27NSSM032A%27) RGB-LED.\nBack in 2017 on of the brightest *low power* SMD LEDs in this size -\nThey are only available as full reel directly from Nichia.\n\nso there is a [second branch](https://github.com/s-light/LEDBoard_4x4_16bit/tree/Nichia_NSSM124D) with the LED-Type changed to [Nichia NSSM124D](http://www.nichia.co.jp/en/product/led_product_data.html?type=%27NSSM124D%27) -\nthese are [available as cut-tape from an distributor](http://www.leds.de/en/Ordinary-LEDs/SMD-LEDs/Nichia-SMD-LED-RGB-NSSM124DT.html).\n\nlatest addition is a [branch with TLC5971*PWP* driver chips](https://github.com/s-light/LEDBoard_4x4_16bit/tree/TLC5971PWP) -\nthis is the same chip but in an HTSSOP-20 housing -\nthat is easier to solder by hand.\n--\u003e no hot air / reflow oven necessary, but recommend.\n\n## Project-Status\n- received first Batch ([Release V1.0.0](https://github.com/s-light/LEDBoard_4x4_16bit/releases/tag/v1.0))\n- received second Batch ([Release V3.0.1](https://github.com/s-light/LEDBoard_4x4_16bit/tree/v3.0.1))\n- 11 PCB's assembled  \n  10 working :sun_with_face:  \n  first solder board not working - has a short between VCC and GND (to be checked)\n- all needed heavy rework: stencil has to big openings - this gives a bunch of bridges at QFN 0,5mm Pin-Pitch IC's\n- had some problems with the first reflow oven used - you need enough heat from the bottom to solder correctly.\n- made some picture from first assembly: [gallery](./doc/gallery.md)\n- ~~fix pads that are to small for hand-soldering~~ done\n- ~~order updated PCB's~~ done\n- ~~solder some more boards~~ done (total: ~60)\n- ~~order screws at [Wegertseder](https://www.wegertseder.com/ArticleDetails.aspx?AKNUM=2588)~~ done\n- updated KiCad files to new version.\n\n### TODO\n- order Heat Sink with machining and Thermal Foil from [Fischer Elektronik](http://www.fischerelektronik.de/web_fischer/de_DE/K%C3%BChlk%C3%B6rper/B01/K%C3%BChlk%C3%B6rper%20f%C3%BCr%20PGA/PR/ICKPGA14x14x12_/$productCard/parameters/index.xhtml)\n- add some more mounting layouts to [LEDBoard_Layouts](https://github.com/s-light/LEDBoard_Layouts)\n- take some more pictures\n\n## Technical Information\nthere are groups of 4 LEDs that are controlled by one TLC5971.  \nevery controller chip has 12 ConstantCurrent outputs. so every LED is controllable individual.\n\nyou need to create a mapping to linearize the order:  \n\n| X/Y   | 0        | 1        | 2        | 3        |\n| :---- | :------- | :------- | :------- | :------- |\n| **0** | IC1 LED1 | IC1 LED2 | IC2 LED1 | IC2 LED2 |\n| **1** | IC1 LED3 | IC1 LED4 | IC2 LED3 | IC2 LED4 |\n| **2** | IC3 LED1 | IC3 LED2 | IC4 LED1 | IC4 LED2 |\n| **3** | IC3 LED3 | IC3 LED4 | IC4 LED3 | IC4 LED4 |\n\nexample for c++ / arduino\n```c++\nconst uint8_t channel_position_map[4][4] = {\n    { 0,  1,  4,  5},\n    { 2,  3,  6,  7},\n    { 8,  9, 12, 13},\n    {10, 11, 14, 15},\n};\n```\n\n### HW\n- PCB size: 40x40x18mm\n- pixel-pitch: 10mm\n- 3.8V..5.5V\n- \u003c= 1A (maximum)\n\n### BOM\nthere is the raw exported BOM at [export/BOM/LEDBoard_4x4_16bit_BOM.csv](export/BOM/LEDBoard_4x4_16bit_BOM.csv) and an modified LibreOffice Calc file with ordering and Price calculations at [doc/LEDBoard_4x4_16bit_PriceCalculation_Ordering](doc/LEDBoard_4x4_16bit_PriceCalculation_Ordering.csv) (link points to exported csv as preview)\n\n### controlling\n\n#### Micro Controller / Arduino\nthere are some Arduino Libraries out there that can generate the correct protocol.\nMy Favorite is [ulrichstern/Tlc59711](https://github.com/ulrichstern/Tlc59711)\n\ni have made a [simple arduino sketch](https://github.com/s-light/LEDBoard_4x4_16bit_HWTest) that uses the mentioned library to test the Boards during production.\n\n#### embedded linux boards\nAdditionally you can use a embedded Linux board with an SPI output to drive them.\nI have successfully implemented the protocol in my fork of OLA.\n(TODO: Link and explain OLA setup)\n\nthere are also other python libraries out there.\n(TODO: test some of theme and link here)\n\n### power \u0026 signal connections\ntheoretically calculate with about 1A@5V for every Board.\nSupply Voltage (VCC) should be 3,8V..5,5V - If possible use the lower end. so no extra heat is generated in the driver IC.\n\nfor the control-signal there are an input and output 3pin 2,54mm connector:\n1. Data\n1. Clock\n1. GND\n\nfor the power there are 3x2pin 2,54mm connector positions.\nso you could daisy-chain power also - but be aware the pcb-traces can handle an absolute maximum of 3,5A. So i would recommend only 1 or maximum 2 daisy-chained boards.\n\n## KiCad Version\n```text\nApplication: KiCad\n\nVersion: 5.99.0-unknown-652a59b78~104~ubuntu20.04.1, release build\n\nLibraries:\n\twxWidgets 3.0.4\n\tlibcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.3/openssl/zlib nghttp2/1.40.0 librtmp/2.3\n\nPlatform: Linux 5.4.0-48-generic x86_64, 64 bit, Little endian, wxGTK\n\nBuild Info:\n\tDate: Sep 16 2020 10:16:55\n\twxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24\n\tBoost: 1.71.0\n\tOCE: 6.9.1\n\tCurl: 7.68.0\n\tngspice: 31\n\tCompiler: GCC 9.3.0 with C++ ABI 1013\n\nBuild settings:\n\tKICAD_SCRIPTING=ON\n\tKICAD_SCRIPTING_MODULES=ON\n\tKICAD_SCRIPTING_PYTHON3=ON\n\tKICAD_SCRIPTING_WXPYTHON=ON\n\tKICAD_SCRIPTING_WXPYTHON_PHOENIX=ON\n\tKICAD_SCRIPTING_ACTION_MENU=ON\n\tBUILD_GITHUB_PLUGIN=ON\n\tKICAD_USE_OCE=ON\n\tKICAD_SPICE=ON\n\n```\n\n## License\n\u003c!-- License info --\u003e\n\u003ca rel=\"license\" href=\"http://creativecommons.org/licenses/by/4.0/\"\u003e\n    \u003cimg alt=\"Creative Commons License\" style=\"border-width:0\" src=\"https://i.creativecommons.org/l/by/4.0/88x31.png\" /\u003e\n\u003c/a\u003e\u003cbr /\u003e\n\u003cspan xmlns:dct=\"http://purl.org/dc/terms/\" property=\"dct:title\"\u003e\n    LEDBoard_4x4_16bit\n\u003c/span\u003e\nby\n\u003ca xmlns:cc=\"http://creativecommons.org/ns#\" href=\"https://github.com/s-light/LEDBoard_4x4_16bit\" property=\"cc:attributionName\" rel=\"cc:attributionURL\"\u003e\n    Stefan Krüger (s-light)\n\u003c/a\u003e\nis licensed under a\n\u003ca rel=\"license\" href=\"http://creativecommons.org/licenses/by/4.0/\"\u003e\n    Creative Commons Attribution 4.0 International License\n\u003c/a\u003e.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fs-light%2FLEDBoard_4x4_16bit","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fs-light%2FLEDBoard_4x4_16bit","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fs-light%2FLEDBoard_4x4_16bit/lists"}