BUILD CARD · EASY
Vibration-Activated Lamp
Use a vibration switch to flash a lamp when the board is tapped gently.
- Time
- 15 min
- Age
- 8+
- Pieces
- 6
- Board
- 10×7
- Build and check a 10×7 snap-grid circuit from a visual diagram.
- Mechanical vibration creates short electrical contacts and brief lamp flashes.
02 / PARTS CHECK
Parts list
- 1×7-snap wireconnector
- 2×3-snap wireconnector
- 1×2.5V lamplamp
- 1×Vibration switchswitch
- 1×3V two-cell battery holderpower
03 / ASSEMBLY
How to build the circuit
- 1
Disconnect the battery and clear the base grid before placing any part.
- 2
Match the final diagram one grid position at a time, placing connecting wires and lower layers first.
- 3
Check the direction of every LED, diode, transistor, battery, and other terminal-sensitive part.
- 4
Press every shared snap firmly, check that no wire shorts the battery, then connect power last.
04 / FIELD NOTES
How it works
A tap briefly closes the vibration switch.
That short contact sends current through the lamp.
The lamp may flash too quickly to stay visibly bright.
Explore more lamp circuit projects →
05 / TEST
Test and expected result
- What to do
- Tap the board gently beside the vibration switch.
- What to expect
- The lamp gives a brief flash for each successful contact.
06 / SAFETY
Build smart
- Use only the 3V two-cell battery holder.
- Never connect the battery terminals directly together.
- Disconnect the battery before moving any component.
07 / TROUBLESHOOTING
If it does not work
- Press every overlapping snap down firmly.
- Check the battery direction and replace weak batteries.
- Compare every component position with the final diagram.
08 / FREQUENTLY ASKED QUESTIONS
Questions about this circuit
What is the main idea behind this circuit?
Mechanical vibration creates short electrical contacts and brief lamp flashes.
What should I check first if it does not work?
Press every overlapping snap down firmly.
09 / RELATED BUILDS
Try a similar circuit
Continue with another build that shares the same components, ideas, or difficulty.
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A position-sensitive variation of manual Project 1 using the three-terminal tilt switch.
Magnetic Reed-Switch Lamp
Replace the manual Project 1 slide switch with a magnet-operated reed switch.
Pushbutton Electric Light
A pushbutton variation of manual Project 1 that lights the lamp only while pressed.