Inside your webcam is an imager chip with thousands of sensors, each much smaller than a hair. Replace the lens with an LED, place a sample directly on the the chip, and you have a lensless microscope capable of streaming live video of plankton or other microorganisms to any display.
Use a 555 timer to make an LED blink like the one in a security camera.
Turn good vintage speakers into great modern ones.
A lightwire animation project.
How to assemble the classic 555-based oscillator kit.
Learn how to build a solar theremin kit from the Maker Shed.
Make your ugly webcam look cool.
