Lab 14 min
Close the loop
One wire is missing. Find it.
easy
Try it yourself.
Eight short, guided sandboxes. Each one drops you into a half-built circuit and asks you to finish it. Friendly hints when you’re stuck, a celebration when you nail it.
Progress
0 of 8 cleared
- Lab 25 min
Pick the right resistor
Add a resistor — but choose the right value.
Complete Lab 1 to unlock
- Lab 35 min
Add a switch
Take control. Make the LED turn off on demand.
Complete Lab 2 to unlock
- Lab 46 min
Two LEDs, one battery
Light both LEDs from a single battery. Two ways work.
Complete Lab 3 to unlock
- Lab 56 min
The night light
Wire an LDR so the LED lights up when the room gets dark.
Complete Lab 4 to unlock
- Lab 65 min
Avoid the short
Wire it the right way — a short circuit gets HOT in real life.
Complete Lab 5 to unlock
- Lab 712 min
Make it blink
Wire a 555 timer so the LED blinks on its own.
Complete Lab 6 to unlock
- Lab 88 min
Boss level: the alarm
Press the button → buzzer screams + LED flashes.
Complete Lab 7 to unlock