This Big Freaking Capacitor is just the trick when you have a lot of current sloshing around your project. They'll help smooth out voltage spikes by providing a little buffering. We use these to help stabilize solar panels on our solar Lipoly...

This is a basic multimeter, I've played with it a bunch and I think its a great addition to a toolbox. It's low cost and simple to use with a big clear display and all the measurements you need:AC/DC Voltage measurementCurrent measurement, from 1uA up to...

Discontinued - you can grab Ladyada's Coloring book - "R is for Robots" instead! Ladyada's "E is for Electronics" is a coloring book adventure with electronic components and their...

Ruby is the ingenue of the group, and something of a Pollyanna. She is the youngest, the most talkative, and gets easily excited about everything. Ruby has a lot of energy and she's always ready to go on an adventure. Ruby's wanderlust sometimes gets her in trouble. Her best friend is...

Mho has a laid-back, passive personality. He likes to do as little work as possible and prefers to simply let the world happen around him. Mho is kind of a hippie and is very quiet and gentle. He is best friends with Ruby, the red LED, who shares his idealism, though he's often...

Discontinued - you can grab one of our many other Plushies instead! Hans is the 'old man' of the group. He tends to be nervous and is often indecisive. Hans frequently changes his mind and...

Discontinued - you can grab the Ruby the Red LED - Circuit Playground Plushie instead! Gus is the smartest member of the group, but also the most coarse. Gus is the closest thing to an engineer in the group: he...

Billie doesn't just sing the blues, she lives the blues. Billie has a good heart, but she can be a total downer. She always sees glass as half-empty (even when it's full), and doesn't like to try new things. Billie has a big-sister relationship with Ruby, and admires her...

Connie is the co-leader of the group with Cappy. Connie is much more level-headed though, and somewhat of a mother figure for the others, particularly Ruby and Billie. She is very thorough, remarkably smart, and has a good heart. She is very dedicated to the others and acts as a balance to the...