Page 172 - Toucpad robotics C11

5. Mobility loop: Distance-based obstacle avoidance with PWM (via pigpio or L298N enable pins).
6. Energy saver: Read BH1750/LDR-ADC toggle relay.
7. Integrate and run end-to-end: Move avoid handle QR attendance at a checkpoint demonstrate
energy saver.
8. Document & demo video.
I. Validation Checklist (teacher rubric snapshot)
Movement stable ( ) | Obstacle avoidance reliable ( ) | Servo mechanism works ( ) | Attendance logs correctly
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( ) | Energy saver responds to light changes ( ) | Clear documentation ( )

Lid
Ultrasonic Sensor
Servo

RFID
LDR

DC Motor

Motor
Car
Arduino Uno

Smart Campus Assistant Robot

21 st #Coding & Computational Thinking
Assignment 2 Disaster Response Drone Simulation Century
Skills #Digital Literacy
Theme: Search-and-rescue planning with safe, school-friendly simulators.
A. Plan & Scenario Setup
1. Define a disaster map: 10×10 grid with blocked cells (debris), safe paths, and targets (survivor markers).
2. Select simulator:
DroneBlocks (block coding), CoDrone EDU, or VEXcode VR (Drone/Robot variant).
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Optional Python vision add-on with OpenCV for image/marker detection (Pi/PC camera).
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B. Mission Requirements (write as specs)
Autonomous grid search (lawnmower/zig-zag or spiral).
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Obstacle avoidance (skip blocked cells or altitude adjust).
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Detect target (colored marker/QR in sim or via image detection).
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Raise alert/log (on-screen message, CSV log, or simulated beacon drop).
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C. Algorithm Design (paper first then blocks/code)
1. State machine: TAKEOFF SEARCH DETECT AID_DROP (optional) RETURN_HOME LAND.
2. SEARCH strategy:
Zig-zag (lawnmower): for row in 1..N sweep left right then right left.
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Skip/route around blocked cells (predefined in array).
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Touchpad Robotics - XI