![]() ![]() On top of that I'm adding a matrix manager based on Adafruit's NeoMatrix library and a driver manager. I'm using the framework of my ESPurna project to add basic functionality (WIFI, WebServer, NTP, MQTT,…). You can checked them out at my Slices repository on Github. The Slices case models (in OpenSCAD format) and the code examples below are released as free open source software & hardware under the GPLv3 licence. To cut the layers I have used the Laser Spirit GE 100W at the Ateneu de Fabricació de Les Corts, one of the three public fablabs in Barcelona: Xarxa d'Ateneus de Fabricació de Barcelona. MDF again with holes for the power connector and button.MDF hollow layers to allow room for the electronics.LED matrix frame in MDF for the 8x8 version.the LED isolator grid, laser cut in MDF.a smoke colored acrylic layer cut with a laser cutter.The end result is a layered, “sliced”, box with room for the LED matrix and the electronics. The only drawback is that you waste a lot of wood but luckily you can fit 4 layers of the smaller version inside the hollow layers of the 16x16 version since they are smaller than half the length/width (half the LEDs in each direction and smaller pitch). I love the color of MDF after a session of laser cut!Īnd to close the box I designed simple hollow layers inspired (again) on the Pibow cases by Pimoroni. 5mm thickness are enough to allow the light to cover the entire 9x9mm square and it looks nicer (better finished), easier to build because I'd be already using a laser cut for the rest of the pieces and much cheaper: a few cents versus a few euros for the 3D printed part, only in material. So I tried to laser cut it on a 5mm MDF board and the result is much better. On the other hand I wanted to get rid of the 3D printed part, the grid that serves as an isolator between LEDs. So I started thinking about a case for the electronics to prevent them from gathering dust. The only issue someone reported was that it has an open enclosure (that sounds like an oxymoron). “You should be selling it” was a common advice. People at the Mini Maker Faire in Barcelona last year loved it for the display effects and the overall built. My wordclock project had some very good reviews. You can check the bill of materials at the README page in the repo for the rest of components. Not the same board but the same Eagle part, the black one from SeeedStudio is slightly shifted towards the top left corner in the picture. The only small glitch I noticed is a small (0.3mm) shift on the silkscreen. I like the fact that you are not limited to the green color for the cheapest price tag: green, blue, red, yellow, black, white, they all cost the same and for a standard board under 10x10cm and 2 layers the price starts at USD 4.90 (USD 12.90 lead free) for 10 pieces!! Quality of the PCB is really good and price/quality ratio is hard to beat. It is the first time I use their PCB service but I have already sent a couple more projects to them, including a PCBA service and I plan to do a review about it soon. I sent the gerblers to fab using SeeedStudio Fusion PCB service. You can use the latest gerblers from the repository or open the project using Eagle +8.0. It can be checked out at my DaClock** board repository** on Github. The DaClock board is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA 3.0) and follows the terms of the OSHW (Open-source hardware) Statement of Principles 1.0. ![]() A buzzer for alarms and connectors for a WS2812 matrix with a beefy capacitor across the power lines. ![]() The controller board sports an ESP8266 ESP-12E and a DS1337S RTC . This allows for a smaller version so I decided to design a PCB with the same features but a 50x50mm size. The 8x8 ones are also available for 7-9€ at Ebay and Aliexpress and have a smaller pitch (8mm versus 10mm for the 16x16 RGB LED matrices). ![]() The 16x16 I was using are the flexible type you can find on Ebay or Aliexpress for about 40-50€. They are much cheaper and almost the same fun. One of the goals was to be able to create smaller displays using 8x8 LED matrices instead of the original 16x16. Fix some issues with the original board (like the lack of a beefy capacitor across the LED matrix power lines).Completely closed enclosure, better presentation.Replace the 3D printed part with a wooden grid cut in laser.Replace the ATMega328P with an ESP8266 (NTP support and user interaction).I have done some myself, including a fibonacci clock, a wordclock with a fancy green matrix effect and an unreleased project that hopefully will see the light someday soon.īut recently I came back to the idea behind the wordclock before, to extend it in different ways: Every modern maker has a clock amongst her first projects. DIYers have been doing clocks since the Ancient Egypt (obelisks lacked portability, thou). ![]()
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