Đầu mèo nhấp nháy với đèn LED Neopixel

LED stripes can easily bended up and down but not left/right. For building round shapes a perpendicular mounting on 3D printed shapes can be done. For this blinky cat head two 3D models are necessary for eyes and nose/mouth.

The LED stripe segments are connected by 3 wires for VCC, DATA and GND. Most of them are just connected in a row, only the three whiskers on each side are in parallel.

1. Left eye: 16 LEDs
2. Nose/mouth: 29 LEDs
3. Right eye: 16 LEDs
4. Whisker right: 3x18 LEDs (3 stripes parallel, upper end as output for next section)
5. Right ear: 16+12 = 28 LEDs
6. Left ear: 12+16 = 28 LEDs
7. Whisker left: 3x18 LEDs (3 stripes parallel)

In total 225 RGB LEDs are used (almost 4m).  The total length is 153. If you use 5V LEDs it is highly recommended to connect 5V and GND at multiple points along the route, not only at the beginning.

The model size is around 1.20m x 0.60m.

As control system WLED (https://kno.wled.ge) can be used together with ESP8266 or ESP32 microcontroller.

So for building a blinkekatze by yourself you need:

• WS2812 LED Stripe 60 LEDs/m band (4m)
• 2x 3D printed eye model
• 1x 3D printed nose/mouth model
• Fitting power supply (depends on your LEDs)
• Not to thin wire (expect 4-5A at 5V)

Cut and solder sections as described here.

Freecad model and .stl files attached.

Have fun, comment, rate and share your results. :-)