This is an automatic street light working model without sensors. When a vehicle passes over a hump, it presses the push button below, turning on the LED street light. Once the vehicle leaves the hump, the button is released and the light turns off.
This shows how street lights can work automatically using simple pressure mechanisms, saving energy and promoting smart infrastructure.”
How to Make Automation Street Light Working Model
Materials Needed
- Cardboard (base and lamp posts)
- Color paper (for decoration and road)
- 3–4 LEDs (white or yellow for street lights)
- 9V battery and battery clip
- Push buttons (one for each hump)
- Wires (for connections)
- Resistors (100–220 ohm for LEDs)
- Toy car (or small self-made cardboard car)
- Double-sided tape or glue
- Scissors, tape, and marker
Step 1: Prepare the Base
- Take a cardboard piece as the base.
- Cover it with black color paper to represent the road.
- Draw lane lines with a white pen/strip.
Step 2: Make Humps with Push Buttons
- Create cardboard speed breakers (humps) and tuck a push button underneath each hump.
- Fix the buttons on the base using glue/tape so that when a toy car passes, the hump gets pressed.
- Connect one terminal of each push button to the positive terminal of the battery via a resistor and LED.
Step 3: Make Street Lights
- Use cardboard to make lamp posts.
- Fix LEDs on top of these.
- Stick the lamp posts along the road where the buttons are placed.
Step 4: Wiring
For each LED street light:
- Connect one leg of the push button to the positive terminal of the 9V battery.
- Connect the other leg of the push button to the resistor → LED anode (long leg).
- Connect the LED cathode (short leg) to the negative terminal of the battery.
- When the push button is pressed (by a vehicle over the hump), current flows, lighting the LED.
Repeat this for each button/light setup.
Step 5: Testing
- Push the toy car gently over each hump.
- The LED above should glow only while the car is pressing the hump.
- When the car moves off the hump, the light turns off — simulating automatic street lights.