Follow Me Robot – Calibrating IR Sensors
Lesson Details
What is an IR sensor? How does it work? How to connect it to evive and calibrate it to detect objects in close proximity?
Activities:
- Connecting two IR sensors in front of the robot chassis and calibrating them to detect objects at a distance of 5cm.
Curriculum: Robotics for Kids – Level 1
Classroom Bundle Used: STEM Classroom Bundle, STEM Mini Classroom Bundle
Prerequisites: Smartphone Controlled Robot – Programming
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Lesson Overview
In this activity, kids will make a follow-me robot, an autonomous robot, which uses two IR sensors to follow the object in front of the robot. The procedure for making the complete robot requires the following steps:
- Assembly of the robot
- Connecting the IR sensors and motor to evive.
- Calibrating IR sensors to detect the object in front of it
- Understanding the logic of the robot
- Programming evive to replicate the above logic
- Testing and debugging of robot
We will do step 2-3 in this lesson.
Material Required
1 set of the following material per group of 3-5 students:
| Component | Image | Quantity | Available in Bundle |
|---|---|---|---|
| evive |  | 1 | |
| BO Wheel |  | 2 | |
| Dual Shaft BO Motor |  | 2 | |
| BO Motor Mount |  | 2 | |
| Acrylic Part: Base Plate |  | 1 | |
| Caster Wheel |  | 1 | |
| 20mm M3 (Female to Female) |  | 3 | |
| M3 bolts of 8 mm Length |  | 10 | |
| USB A-B Cable |  | 1 | |
| IR Sensor |  | 2 | |
| Male to Female Jumper Cable 20cm |  | 20 | |
| Screw Driver (+) |  | 1 | |
| M3 Nuts | | 20 |
Lesson Outline
Introduction and demonstration of the robot - 10 minutes
Assembly of the robot - 10 minutes
Calibrating motor using menu - 10 minutes
Connect the motor to evive and using evive motor control menu, test if the motor is connected in the correct way.
IR Sensor - 30 minutes
- Connecting the IR sensors to evive
- Understanding the working of an IR sensor.
- Calibrating the IR sensor to detect objects in close proximity.
