Omana's Journey (Smart Railway Track Signal & Servo Barrier Gate)
Source: Stemoto Original
Build a railway crossing model with track IR sensors, servo barrier gates, and Red/Green signal lights. When a train approaches, IR sensors close the barrier gate, flash warning lights, and sound train whistles.
Categorisation
Props & Materials Required
- •Model train track & road level crossing mat
- •2x IR track sensors (Approach and Clear gates)
- •SG90 micro servo motor (level crossing barrier gate arm)
- •Red & Green 10mm signal LEDs
- •ESP32 / Arduino controller
- •DFPlayer Mini MP3 module + 3W speaker
Step-by-Step Instructions
Train Approaches Crossing
Toy train drives along track toward the road crossing.
Approach IR Sensor Triggers
Approach IR sensor detects train 30cm away.
Automated Barrier Gate Closes
Signal turns RED, alarm beeps, and servo motor lowers the barrier gate arm to block cars safely!
Train Clears Crossing
Train passes. Clear IR sensor detects train departure → Servo raises barrier gate → Signal turns GREEN!
Why It Works & Notes
Omana's Journey explores train travel, railway signals, and level crossings. Building an automated servo level crossing gate controlled by IR track sensors introduces automated railway safety systems.
Looking Around Chapter 6 & 7: Omana's Journey | STEM Tech: Automated Railway Level Crossing Gate & Dual IR Track Interlocking — Indian Railways automatic signal interlocking.