Micro sleeve

Project: Micro sleeve
Featured:	No
State	Completed
Members	Xopr
GitHub	No GitHub project defined. Add your project here.
Description	ART-net controlled cylindrical-ish μdisplay, it's so cute!
Picture

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 GPIO2
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

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: GPIO2
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

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 PD_EN and pull down GPIO15

Contents