Interlocking PCB RGB LED Christmas Tree

Description

The design uses 3 interlocking boards in the shape of a Christmas tree and an Attiny85 to control 22x WS2812C RGB LEDS. These are lower power (5 ma per colour) versions of the WS2812B (also known as Neopixels). The B versions end up too bright, even with the C versions I ended up running at 20% brightness). These are covered with foam dots to defuse the light. A boost converter ups the battery voltage to 5v and a charge IC takes care of battery management. I have put in the circuitry for reprogramming the Attiny from the USB port, but I have not tested it yet.

Build Gallery:

https://imgur.com/a/bX1Yeng

Flashy lights!

Files

Xmas Tree Base.sch

sch - 458.54 kB - 12/13/2019 at 01:37

Download

Xmas tree Part 1.sch

sch - 405.08 kB - 12/13/2019 at 01:37

Download

Xmas tree Part 2.sch

sch - 205.05 kB - 12/13/2019 at 01:37

Download

Xmas tree Part 1.brd

brd - 171.14 kB - 12/13/2019 at 01:37

Download

Xmas Tree Base.brd

brd - 97.40 kB - 12/13/2019 at 01:37

Download

Components

22 × WS2812B

23 × C-EUC0805K 0.1uf C-EUC0805K C0805K

1 × ATTINY85-20SUR ATTINY85-20SUR 8S2

1 × COILCRAFT_DO3316P-472MLCOILCRAFT_DO3316P-472ML_0_0 COILCRAFT_DO3316P-472MLCOILCRAFT_DO3316P-472ML_0_0 COILCRAFT_DO3316P-472ML_0

1 × NTGD1100LT1G NTGD1100LT1G SOT95P275X110-6N

Discussions

Felix wrote 12/20/2019 at 12:15

I just recently did a little challenge with students learning to solder stuff. This would've been a great project, too. :)

Are you sure? yes | no

steve wrote 12/18/2019 at 17:47

What's approx cost (USD) for this project? Do you sell the boards? Would you please post a parts list? Thanks!

Are you sure? yes | no

rohan.woods wrote 12/19/2019 at 22:26

The BOM comes in around $15-20 getting the parts from Mouser and the WS2812C from LCSC. I need to do a redesign that uses LCSC parts as they are much cheaper. You can download the BOM and PCB files. I don't sell the boards as it's a work in progress, but you can grab the Eagle files and export the gerbers and any PCB house will be able to make it for you. I used JLCPCB as you can combine shipping with the leds.

Are you sure? yes | no

Interlocking PCB RGB LED Christmas Tree

Become a Hackaday.io member

Just one more thing

Description

Details

Files

Xmas Tree Base.sch

Xmas tree Part 1.sch

Xmas tree Part 2.sch

Xmas tree Part 1.brd

Xmas Tree Base.brd

Components

Enjoy this project?

Discussions

Become a Hackaday.io Member

Does this project spark your interest?

Report project as inappropriate

Send message

Remove Member