White LED earrings using ATtiny84a micro-controller, battery includedDesigned by California STEAM, Ships from United States of America
What is it? Earrings with LED's to light up any occasion. The different patterns are controlled by an ATtiny84a and programmed with the Arduino IDE. These earrings are powered by a CR1225 coin cell...Read More…
Earrings with LED's to light up any occasion. The different patterns are controlled by an ATtiny84a and programmed with the Arduino IDE. These earrings are powered by a CR1225 coin cell battery, and will last at least a day, and up to 2 weeks (depending on the pattern and the color (voltage forwarding) of the LED). A button on the back of the earring can be used to select different patterns, or to turn off the device.
Challenged myself to use the ATtiny84a in something special. The small foot print of the micro-controller allowed using this in an earring. I wanted a very simple design, and by using the coin cell battery, I was able to run the LED's without current resistors (current of the coin cell is low enough). Two capacitors are placed close to the VCC pin of the ATtiny84a to make sure the voltage stays consistent while the LED's are flashing. I also wanted to experiment with using different layers on the PCB. The 'silver' on the earring is accomplished by removing the soldermask in that area.
The earrings are entirely assembled by hand. I use a stencil and reflow oven to install the components on the font, the back is done with a soldering iron. Programming is done with the Arduino IDE. To conserve energy, the ATtiny84a is in sleep mode, 99.9% of the time. It only wakes up to determine which LED should be turned on or off before entering sleep mode again.
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California STEAM was started in the summer of 2017 in Stockton, CA by Alicia and Sander van de Bor. They added Art to STEM (Science Technology Engineering and Math) to create STEAM.
STEM and STEAM education is a growing necessity to meet the future demands of STEM jobs in the upcoming decades. These jobs are required in almost every field, from manufacturing to medical.
California STEAM develops creative solutions for all ages. Their classes are taught at several locations throughout Stockton (libraries, Mexican Heritage Center etc.)
The products developed by California STEAM are a combination or Art and Technology. These are designed to motivate young makers to get more familiar with electronics and programming. These young makers are the engineers of the future.