improvements to neopixel bracelet
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improvements to neopixel bracelet

by nteetahtah on Sat Jan 16, 2021 10:39 pm

I really liked the neopixel bracelet project (https://learn.adafruit.com/neopixel-bracelet) and decided to make one for my son for xmas. Following the instructions, I did get it to work, but I was very frustrated with it in the end and thought it could be made way better with a few tweaks. The main things I didn't like about it were:

1. Mini Skinny Neopixel strips are hard to solder together (mainly my fault because I used thick wire)
2. Battery & Trinket hard to fit into bracelet
3. No charger - have to disconnect battery to charge
4. 3D printed bracelet caps didn't fit well

I made a bunch of changes and really like the end result - I feel like it'll last much longer and it was easier to assemble. Changes I made are:

1. flexible PCBs for soldering neopixel strips together
2. redesign bracelet in openscad - change shape, flat section with holders for electrical components
3. add battery charger board
4. USB access holes for charger and trinket - never have to take it apart
5. code - add bouncing line option (like night rider)

The new shape of the bracelet fits my son's wrist better and keeps the neopixels facing outward. I still need to work on making an adult-size version. If it would be useful to anyone, I could post files for the flexible PCBs, 3D printer files, and arduino code.

Here are some pictures:
neopixel bracelet improvements.003.jpeg
neopixel bracelet improvements.003.jpeg (239.67 KiB) Viewed 274 times

neopixel bracelet improvements.002.jpeg
neopixel bracelet improvements.002.jpeg (303.41 KiB) Viewed 274 times

neopixel bracelet improvements.001.jpeg
neopixel bracelet improvements.001.jpeg (265.11 KiB) Viewed 274 times

Posts: 5
Joined: Sat Dec 05, 2020 8:17 pm

Re: improvements to neopixel bracelet

by adafruit_support_bill on Sun Jan 17, 2021 7:26 am

Nice work! Thanks for sharing your improvements.

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Joined: Sat Feb 07, 2009 10:11 am

Please be positive and constructive with your questions and comments.