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=== synopsis === Inspired by the famous [[LED sleeve]], I bought a lantern and found a tiny ledstrip on ALiExpress. === parts === The list you need to build one: * Lantern: found a solar candle lantern at Action for roughly €5,- * 1M 160LED/M × 2.7mm WS2812B (2020SMD) strip (12V) * >56mm 5/8" 16mm electrical pipe (6-7cm) * heat shrink ~56mm × 22mm 8-9cm * ESP-12 or an ESP8266 that exposes <code>GPIO2</code> * step-down/buck converter to 3.3v * USB-C PD trigger to 12V * 2 × 10k resistors * two pieces of ~10cm × 10cm scrap plywood for the pipe base * hot glue * 16mm drill * some thin wire to connect all boards * soldering equipment * mounting hardware (or just hot glue) * optional: 4 × 10cm × 20cm plexiglass, since the lantern came with super thin real glass, that broke once it fell === build === * flash the ESP with WLED firmware; this has all you need! * dismantle the candle, charger and solar panel in the used lantern; it will leave a big hole at the bottom * remove some ridges to make it flat for the plywood * optional: replace the glass with plexiglass * drill a hole in the center of the top plywood so it fits the electrical pipe * wrap the LEDstrip clockwise starting from the end of the strip at the top; you will notice it will need 8,5 LEDs to make a single spiral circle and therefore second layer almost alternates with the first one * cover it with heat shrink, ~1cm past the soldered wires at the bottom, leaving ~1cm above the pipe * while heat shrinking, push in the top heat shrink so 'falling' water can't creep in from the top * feed the separate connector through one of the holes out of the bottom; * solder both the connector wire and extra wires for the buck converter to the PD-trigger board * solder wires from the buck converter to the ESP (make sure the necessary ESP pull resistors are also present); * include the data pin: <code>GPIO2</code> * place both plywood boards (1 inside, one from the bottom) * place and plug in the micro sleeve * hot glue everything to the base and make a notch for the cable to come out === notes === This will become a 19mm × 52.5mm sleeve with 8 × 20 LEDs so it will not be fully compatible with the [[LED sleeve]] Art-Net codebase (7 × 21). Also, don't forget to pull up <code>PD_EN</code> and pull down <code>GPIO15</code> === also see === * [https://kno.wled.ge/ WLED]
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