It's another Friday and we are back with the product that makes sense - it is metric! It is not measured in twips, poppyseeds, barleycorns, yards, furlongs, or any of this funny stuff. It's your good old straightforward decimals. Metric 2.5mm Hex Nut - 25 Pack $4.00 Metric M2.5 Hex Nut, in packs of 25, […]
Project: APA102-2020 MicroNova Custom LE...
Solar botics
February 23, 2018
I created this choker as a project to demonstrate the new MicroNova APA102-2020 LED strips.
Photo by Yeti, edited by Batgirl
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.
Build:
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.
Operation:
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.
MORE POSTS
Bio-Bugs Press Release
NEW YORK - February 12, 2001 - The WowWee Toy division of Hasbro, Inc. today introduced the first toy line to incorporate advanced "nervous network" technology. New B.I.O. Bugs (Bio-mechanical Integrated Organisms), the hit of last month's Hong Kong Toy Fair, are robotic bugs that can autonomously act by themselves, come and go as they please, identify friend or foe and have the ability to avoid or climb over obstacles in their path.
Technology Index Closes...
We're sorry to report that Mr. Bilton of Technology Index has informed us that his popular UK webstore is shut down due to circumstances not having to do with its business. We hope things work out for Mr. Bilton, and that Technology Index will reopen for business when things get better.
Active Sale!
Spending more time by yourself... indoors... away from other people? Great time to pick up some Fluke meters & supplies that you don't wipe your tush with (and if you do, ewww.) Check out our Sale flyer - it's on until March 28!
Solarbotics has been operating for more than 25 years, bringing electronics know-how and supplies to both the electronics professional and hobbyist. We'll be happy to help you too!
Solarbotics, Ltd. is not responsible for misprints or errors on product prices or information. For more information, please see our Terms and Conditions.
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.