Discontinued - you can grab Ruby the Red LED - Circuit Playground Plushie instead! Cappy is the de facto leader of the group. He is always coming up with crazy schemes. A running joke is that his capacitance value...

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...

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...

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...

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...

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...

When you need to switch a lot of power, N-channel MOSFETs are best for the job. These FETs can switch over 60A and 30V and are TO-220 packages so they fit nicely into any breadboard or perfboard. Heat sinking is easy with TO-220's, but because of the very low Rds(on) of down to 0.009 ohms...

When you need to switch a lot of power, P channel MOSFETs are best for the job. These P-FETs can switch over 60V and 25A (with proper heat-sinking) and are TO-220 package so they fit nicely into any breadboard or perfboard. Heat sinking is easy with TO-220s, but because of the very low Rds(on)...