BUILD CARD · EASY
Pushbutton Electric Light
A pushbutton variation of manual Project 1 that lights the lamp only while pressed.
- Time
- 15 min
- Age
- 8+
- Pieces
- 6
- Board
- 10×7
- Build and check a 10×7 snap-grid circuit from a visual diagram.
- A momentary pushbutton lights the lamp only while its contacts complete the loop.
02 / PARTS CHECK
Parts list
- 1×7-snap wireconnector
- 2×3-snap wireconnector
- 1×2.5V lamplamp
- 1×Press 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
The press switch closes the only current path.
Current then flows through the 2.5V lamp.
Releasing the button opens the path again.
Explore more lamp circuit projects →
05 / TEST
Test and expected result
- What to do
- Press and hold the pushbutton, then release it.
- What to expect
- The lamp stays on only while the button keeps the circuit closed.
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?
A momentary pushbutton lights the lamp only while its contacts complete the loop.
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.
Magnetic Reed-Switch Lamp
Replace the manual Project 1 slide switch with a magnet-operated reed switch.
Tilt-Activated Lamp
A position-sensitive variation of manual Project 1 using the three-terminal tilt switch.
Vibration-Activated Lamp
Use a vibration switch to flash a lamp when the board is tapped gently.