greatcreate

Converting the Sun into USB Power with Weekend Projects

Converting the Sun into USB Power with Weekend Projects

If you’ve been wanting to dive into basic electronics but haven’t figured out where to begin or are too intimidated by circuit schematics and Printed Circuit Boards, and want to start with something simple, then this is the project for you! The Solar USB Charger, our latest addition to Weekend Projects, combines the very familiar technologies of a solar cell and a USB cable to convert the sun into USB power.

Sound-Activated and Wearable Light Organ

Sound-Activated and Wearable Light Organ

About the size of two 9V batteries, and powered by only one, our latest Weekend Project, the Light Organ, is both portable and fun! The beating heart of this project is the LM324 Integrated Circuit (IC), the black chip in the middle of the board. This legendary IC actually has four operational amplifiers (or “op-amps”) embedded in it, although for the purpose of this project, we’re only using two.

Homemade Alarm Made From Two Audio Jacks

Homemade Alarm Made From Two Audio Jacks

A homemade alarm system made from two “normally closed” audio jacks is the focus of our most recent Weekend Project, the Alarm Bag. The alarm system, built into an enclosure (above), can be installed into any bag (in our project, a messenger bag is used) or even modified to act as a door or window alarm. The 2-jack design means the alarm will activate whenever the second audio jack (the trigger) is removed.