Stages

3-1Two Switches: ANDLight it only when both S1 and S2 are ON

Power off

Parts

This stage can be solved with wiring alone.

Goals

  • With S1 and S2 both OFF, L1 is off
  • With only S1 ON, L1 stays off
  • With only S2 ON, L1 stays off
  • With S1 and S2 both ON, L1 lights

Rules

  • Don't burn out the LED (25 mA max)
  • No short circuits
B13VS1OFFS2OFFR1100ΩL1Red−++−

Selected

Press a terminal (the small ◯) to start a wire. Press where you want to bend to place corners, and finish on another terminal or on a wire. Press the middle of a wire and then somewhere else to draw a branch from there. You can drag parts and wires to move them. When you are ready, press "Run!" to turn on the power, and try the switches while it is on.

Line mode

Keys

W
Draw wire
R
Rotate
M
Move
G
Drag
Del
Delete
⌘Z
Undo
⌘⇧Z
Redo
Enter
Run
Home
Fit
H
Hint

Wheel to zoom, right-drag to pan