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Duonacci Pendant: Green and Blue LED Necklace - Rechargeable Rave EDM Jewelry

Only 8 left and in 5 carts

Price:$69.00

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CaliforniaSTEAM  
Arrives soon! Get it by Nov 13-18 if you order today
Nov 13-18

Returns & exchanges accepted

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Star Seller. This seller consistently earned 5-star reviews, shipped on time, and replied quickly to any messages they received.

Highlights

  • Materials: Silver
  • Pendant width: 2 Inches; Pendant height: 2 Inches; Necklace length: 20 Inches

*** The Duonacci Pendant: Where Engineering Meets Elegant Mathematics ****

The Duonacci pendants are an exclusive fusion of technology and art, designed for those who appreciate hidden complexity and dynamic color. As a piece of wearable PCB art, the intricate design is based on the captivating geometry of the Golden Angle and the Fibonacci Numbers, translating nature's own mathematics into a mesmerizing light display. Powered by an energy-efficient microcontroller and a supercapacitor, each pendant is a unique piece of tech-art.

*** Dynamic Illumination: Bi-Color LEDs and Advanced Modes ***

The Duonacci pendants feature 103 custom-placed bi-color LEDs (Geen and Blue) that can be mixed to achieve a vibrant spectrum, including beautiful teal and turquoise. This allows for a dazzling, dynamic display of color and customizable patterns, all driven by an AVR32DA48 micro-controller.

*** Mode Selection and Power Management ****
A push button on the back of the pendant is used to turn the pendant on/off or select modes. Hold the button for 3 seconds to enter sleep mode and turn the LEDs off.

Clicking the button while the pendant is on cycles through these unique modes:

Demo Mode: Patterns are shown in a fixed, mesmerizing sequence.
Random Mode: Patterns are generated by a random sequence generator.
120 BPM Party Mode: Patterns update randomly at a 120 BPM rate, optimized for House Music.
Portal Mode: Spirals elegantly fade in and out with different color blends.
Fibonacci Sequence Modes (8 & 13): Patterns fixed to specific points of the Fibonacci sequence.
Fibonacci Wave Mode: Spirals cycle dynamically between sequence numbers 13, 34, and 21.
Fireworks Mode: A brilliant, energetic light burst display.

*** Powered by Innovation: Hybrid Supercapacitors (LIC) ***

The Duonacci pendants showcase my expertise in creating energy-efficient LED wearables. By utilizing Hybrid Lithium-Ion Capacitors (LICs) instead of traditional batteries, these pendants are an eco-friendly and high-performance choice.

The LIC Advantage: Safety, Longevity, and Sustainability

Rapid Recharge: Fully charged in just 6 minutes.
Extended Lifespan: 50,000+ cycles without degrading capacity (vastly outperforming LiPo batteries).
Long-lasting Luminescence: Up to 16 hours of dynamic color on a single charge.
Enhanced Safety: LICs are more rugged, do not catch fire or explode, and only vent under extreme stress.
Eco-Friendly: No safety or environmental concerns associated with rechargeable batteries. The entire wearable can be recycled with standard household electronics.

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  • Order today to get by Nov 13-18
  • Returns & exchanges accepted within 30 days
  • Free shipping
  • Ships from: Stockton, CA

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Reviews for this item

What buyers say, summarized by AI: Love it Looks great

5.0

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(13 reviews)

5.0 Item quality
4.9 Shipping
5.0 Customer service
100% Buyers recommend
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5 out of 5 stars 5 This item

Nancy Oct 19, 2026

Love my pendants... I am ordering more!!

Nancy Oct 19, 2026

5 out of 5 stars 5 This item

Malina May 29, 2026

Most complimented piece of jewelry I own! I can’t leave the house with this necklace or my earrings from californiaSTEAM without getting asked where there gorgeous tech wonders! I’ve come back to buy some for friends and my daughters and they all love them 💖✨

Malina May 29, 2026

5 out of 5 stars 5 This item

Jordan May 15, 2026

LOVE this shop and can't wait to buy more things from them!

Jordan May 15, 2026

5 out of 5 stars 5 This item

Jason Apr 2, 2026

We had issues with the delivery, nothing to do with the shipper. But they helped out great and got everything situated. It is a great piece and very happy with it!

Jason Apr 2, 2026

CaliforniaSTEAM
We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 5.0
·
1.1k sales
·
7 years on Etsy
1 shop member

Typically responds within a few hours

Typically responds within a few hours

Smooth shipping Has a history of shipping on time with tracking.

Speedy replies Has a history of replying to messages quickly.

Rave reviews Average review rating is 4.8 or higher.

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Listed on Nov 5, 2026