4x magnifier LED display. Lamp, clock & more

prusaprinters

<p>This device increases the area of ​​the LED matrix by 4 times. My idea is to use an expanding light separator. If you print it from a translucent material (and my silver plastic turned out to be a little translucent), then the image elements are "voluminous", and, for example, if you use the firmware to display the clock, the numbers will also be three-dimensional. But you can print them in black plastic and get a classic scoreboard, but 4 times larger at the price of a small one. And all the electronics will cost about $7.</p> <p>Depending on the firmware, you can use as a clock, lamp, creeping line, night light or color music.</p> <p>The design does not use filling, but only walls, so printing is relatively fast and low material consumption. Also, no screws or other fixing methods are used.</p> <p>How it works can be seen in the video <figure class="media"> <oembed url="https://www.youtube.com/embed/O-WCk1mXSQI"></oembed> </figure> </p> <p>UPD<br/> I added a version in two sides in the form of frames, its printing a third faster and when printing a model, corners closed by cooling by a fan are not created. This option has not yet been tested, but I guess it is better to print it from a more rigid PLA.</p> <h3>Print instructions</h3><p>It is better to print the box out of partially flexible plastic, for example, SBS. I printed with a 1 mm nozzle at a layer of 0.3 and low speed (this requires material, in addition, my extruder cannot heat very much). It is important to prevent overheating, as the part may become deformed.<br/> You will need an Arduino Nano board, an 8x8 color display matrix, a 200-500ohm resistor with any power and some wires. For electronics, I used the information from this site <a href="https://alexgyver.ru/gyvermatrixbt/">https://alexgyver.ru/gyvermatrixbt/</a> and chose the simplest option.</p> <p>BOM (approximately $7)</p> <p>WS2812 LED Full Color Module 64 Bit 5050 RGB<br/> (approximately $ 4)<br/> <a href="https://aliexpress.ru/item/32658218780.html?spm=a2g0s.9042311.0.0.264d33edPrg17W">https://aliexpress.ru/item/32658218780.html?spm=a2g0s.9042311.0.0.264d33edPrg17W</a></p> <p>Arduino Nano with bootloader compatible Nano 3.0 CH340 USB driver 16 MHz ATMEGA328P / 168 P<br/> (approximately $ 2)<br/> <a href="https://aliexpress.ru/item/32341832857.html?spm=a2g0s.9042311.0.0.264d33edPrg17W">https://aliexpress.ru/item/32341832857.html?spm=a2g0s.9042311.0.0.264d33edPrg17W</a></p> <p>Power supply with adapter, 5 V, 2 A, 2000 mA<br/> (approximately $ 1)<br/> <a href="https://aliexpress.ru/item/32661794396.html?spm=a2g0s.9042311.0.0.264d33ed0JAM9T">https://aliexpress.ru/item/32661794396.html?spm=a2g0s.9042311.0.0.264d33ed0JAM9T</a></p> <p>In the example, I used this Arduino sketch:</p> <h3>include &lt;FastLED.h&gt;</h3> <p>FASTLED_USING_NAMESPACE<br/> // FastLED "100-lines-of-code" demo reel, showing just a few<br/> // of the kinds of animation patterns you can quickly and easily<br/> // compose using FastLED.<br/> //<br/> // This example also shows one easy way to define multiple<br/> // animations patterns and have them automatically rotate.<br/> //<br/> // -Mark Kriegsman, December 2014</p> <h3>if defined(FASTLED_VERSION) &amp;&amp; (FASTLED_VERSION &lt; 3001000)</h3> <h3>warning "Requires FastLED 3.1 or later; check github for latest code."</h3> <h3>endif</h3> <h3>define DATA_PIN 13</h3> <p>//#define CLK_PIN 4</p> <h3>define LED_TYPE WS2812</h3> <h3>define COLOR_ORDER GRB</h3> <h3>define NUM_LEDS 64</h3> <p>CRGB leds[NUM_LEDS];</p> <h3>define BRIGHTNESS 96</h3> <h3>define FRAMES_PER_SECOND 120</h3> <p>void setup() {<br/> delay(3000); // 3 second delay for recovery</p> <p>// tell FastLED about the LED strip configuration<br/> FastLED.addLeds&lt;LED_TYPE,DATA_PIN,COLOR_ORDER&gt;(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);<br/> //FastLED.addLeds&lt;LED_TYPE,DATA_PIN,CLK_PIN,COLOR_ORDER&gt;(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);<br/> // set master brightness control<br/> FastLED.setBrightness(BRIGHTNESS);<br/> }</p> <p>// List of patterns to cycle through. Each is defined as a separate function below.<br/> typedef void (*SimplePatternList[])();<br/> SimplePatternList gPatterns = { rainbow, rainbowWithGlitter, confetti, sinelon, juggle, bpm };<br/> uint8_t gCurrentPatternNumber = 0; // Index number of which pattern is current<br/> uint8_t gHue = 0; // rotating "base color" used by many of the patterns</p> <p>void loop()<br/> {<br/> // Call the current pattern function once, updating the 'leds' array<br/> gPatterns<a href="">gCurrentPatternNumber</a>;<br/> // send the 'leds' array out to the actual LED strip<br/> FastLED.show();<br/> // insert a delay to keep the framerate modest<br/> FastLED.delay(1000/FRAMES_PER_SECOND);<br/> // do some periodic updates<br/> EVERY_N_MILLISECONDS( 20 ) { gHue++; } // slowly cycle the "base color" through the rainbow<br/> EVERY_N_SECONDS( 10 ) { nextPattern(); } // change patterns periodically<br/> }</p> <h3>define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))</h3> <p>void nextPattern()<br/> {<br/> // add one to the current pattern number, and wrap around at the end<br/> gCurrentPatternNumber = (gCurrentPatternNumber + 1) % ARRAY_SIZE( gPatterns);<br/> }<br/> void rainbow()<br/> {<br/> // FastLED's built-in rainbow generator<br/> fill_rainbow( leds, NUM_LEDS, gHue, 7);<br/> }<br/> void rainbowWithGlitter()<br/> {<br/> // built-in FastLED rainbow, plus some random sparkly glitter<br/> rainbow();<br/> addGlitter(80);<br/> }<br/> void addGlitter( fract8 chanceOfGlitter)<br/> {<br/> if( random8() &lt; chanceOfGlitter) {<br/> leds[ random16(NUM_LEDS) ] += CRGB::White;<br/> }<br/> }<br/> void confetti()<br/> {<br/> // random colored speckles that blink in and fade smoothly<br/> fadeToBlackBy( leds, NUM_LEDS, 10);<br/> int pos = random16(NUM_LEDS);<br/> leds[pos] += CHSV( gHue + random8(64), 200, 255);<br/> }<br/> void sinelon()<br/> {<br/> // a colored dot sweeping back and forth, with fading trails<br/> fadeToBlackBy( leds, NUM_LEDS, 20);<br/> int pos = beatsin16( 13, 0, NUM_LEDS-1 );<br/> leds[pos] += CHSV( gHue, 255, 192);<br/> }<br/> void bpm()<br/> {<br/> // colored stripes pulsing at a defined Beats-Per-Minute (BPM)<br/> uint8_t BeatsPerMinute = 62;<br/> CRGBPalette16 palette = PartyColors_p;<br/> uint8_t beat = beatsin8( BeatsPerMinute, 64, 255);<br/> for( int i = 0; i &lt; NUM_LEDS; i++) { //9948<br/> leds[i] = ColorFromPalette(palette, gHue+(i<em>2), beat-gHue+(i</em>10));<br/> }<br/> }<br/> void juggle() {<br/> // eight colored dots, weaving in and out of sync with each other<br/> fadeToBlackBy( leds, NUM_LEDS, 20);<br/> byte dothue = 0;<br/> for( int i = 0; i &lt; 8; i++) {<br/> leds[beatsin16( i+7, 0, NUM_LEDS-1 )] |= CHSV(dothue, 200, 255);<br/> dothue += 32;<br/> }<br/> }</p>