LED low flying reindeer warning sign

LED low flying reindeer warning sign.

4 red glowing LEDs will warn your guests about these seasonal upcoming low flying reindeers.

Printed in German but an English variant is available too.

The complete electronics is battery powered and should last a long time with the named battery.

You can put the case on your wall or on a desk. With the 2 holes on the top you can even hang it at a door…

Video:

Notes:

• A free SVG file was used for the picture.
• Saw a similar sign and thought that it needs more attention with these 4 glowing LEDs. Because that model I saw was part of a contest, I will not add mine to the same contest of course. =)
• The case is closed with the 4 printed screws.
• The other 4 screws can be used as distance to the wall because to the later added On/Off switch.

Parts used:

• 1x Wemos D1 Mini ESP8266
• Some 0,25mm² wires in different colours
• 1x 1100mAh LiPo battery with JST plug (bigger sized ones possible)
• 4x LED chip WS2812B 
• 1x D1 mini “battery shield board” with JST plug to recharge the LiPo battery
• Some cable ties to fix the components into the back of the sign
• 1x On/Off switch Ø13x19mm

Software:

You can download the code in my GitHub repository.

Wiring:

• NOTE: Added a switch after these pictures were taken… Simply integrate it into the red wire of the battery before the JST plug of the battery to be able to switch the device off.
• The D1 mini ESP8266 is stacked together with the battery charging board. Take care to stack the same pins together, so TX over TX and 5V over 5V!
• The 4 LED chips are pressed in the same direction into the front part.  
• Take a look at the picture and the table for the other parts of the electronic:

Printing instructions:

• 0.3 draft profile
• No supports needed
• No brim needed
• Textured sheet used
• Color change needed in the front part to separate the yellow and black color at 5.3mm
• The 8 screws should be printed with 100% infill for more strength 

Happy printing =)