These addressable LEDs are extremely small, less than 1/4 the size of a standard 5050 LED.
This project was built using engineering sample standard MicroNova 99 LED / meter strips . The MicroNova strips we are selling have 198/meter - twice the density!
Reason for a Choker necklace:
Hats have been done, shoes have been done, pendants have been done.
This is something new for a Valentine’s dance costume, so I decided to go with a choker design. I also wanted something that was interactive, something that would add another layer of WOW to just lighting.
I used a Wemos D1 Mini development board along with a boost-converting battery shield for the Wemos D1.
The battery shield was a particularly good choice here because the MicroNova LEDs should be supplied a solid 5VDC. This board boosts the battery voltage to 5V, and then the Wemos D1 Mini bucks it down to 3V3 for it's own operation.
A mini SPDT Slide switch toggles the power from the battery shield to the D1. This allows charging the battery using the battery shield USB connector while not powering the D1.
Epoxy locks the switch and wires in place.
The battery used is a conveniently handy older 450mAh Lithium Polymer. Depending on the lighting mode, this battery can power the necklace for a couple of hours.
I used elastic thread to attach the LED strip and components to the necklace. A heavy duty needle was all that was needed to punch through the (imitation) leather belt. Because the thread was elastic and tied under tension, it held the MicroNova strip well in place.
When the choker powers up, it creates a WiFi Access Point called "HeartBurnChoker1".
Once I connected to this WiFi, I opened a browser and went to 192.168.4.1. The control interface is simple, but effective. The D1 Mini has more than ample power and speed to effectively drive these LEDs. The MicroNova features separate clock & data lines, so even relatively slow I/O (like Raspberry Pi) can still make it work.
Ok, we were fed up with the strange pinouts on the L298 motor driver, and decided to do something about it. The result is the Solarbotics L298 Compact Motor Driver. It happens to be the same size as a BEP tile, offers four status LEDs, plugs for easy wiring, and screw terminals for motor and […]
Today we are going to be taking a look at one of our favorite go-to materials for easy molding and quick repair, Caprolactone Thermoplastic! This plastic, more commonly known as ShapeLock, Friendly Plastic, Instamorph or Polymorph, is a biodegradable polyester with a low melting point. When solid, it has physical properties of a very tough, […]
We're proud to announce that we just got our shipment of 'Junkbots, Bugbots, and Bots on Wheels' tonight! The first 100 books will come signed by Dave Hrynkiw, and come with a free GM2 or GM3 gearmotor!
Every once in a while we like to re-arrange the furniture. Sure, it's nice to have things look new and different, but most of the time we're just trying to make things just work better. This week we've done a little bit of restructuring of our Advanced category - we hope it'll make it easier […]
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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.