How Do Robots Work?

How Robots Function

Every robot follows a simple loop: sense the world, process the information, then act. Let's break down how this works.

The Sense-Think-Act Cycle

1. SENSE  → sensors gather data (camera, distance, touch)
2. THINK  → controller processes data, decides action
3. ACT    → actuators move (motors, grippers)
   ↻ repeat continuously

1. Sensing

• Cameras — vision.
• Lidar/ultrasonic — distance.
• Encoders — position/rotation.
• IMU — orientation/balance.

2. Processing (The Brain)

A controller (microcontroller or computer) runs code that interprets sensor data and decides what to do — often using AI.

3. Acting

• Motors — wheels, joints.
• Servos — precise angles.
• Grippers — manipulate objects.

Example: A Line-Following Robot

if (leftSensor sees line)  turn left
else if (rightSensor sees line) turn right
else  go straight

FAQs

What controls a robot?

A microcontroller (like Arduino/Raspberry Pi) running programmed instructions. More in our Robotics guides.

Do all robots use AI?

No — simple robots use basic logic; advanced ones use AI.