Circuit Sandbox

Build real circuits: add parts, join their dots with wires, and watch them work. Can you finish all five missions?

Tap a dot at the end of a part, then another dot, to join them with a wire. Make a loop from + back to −.

Missions

Light an LED (without popping it!)Join + → resistor → LED's long leg (the bent one) → LED → back to −.
Make a doorbell
Build a fan with an on/off switch
Make a night light
Two LEDs, one switch