A robot is the product of the robotics field, where programmable machines are built that can assist humans or mimic human actions. Robots come in different sizes and shapes. Each robot has a differing level of autonomy, ranging from human-controlled bots that carry out tasks that a human has full control over to fully autonomous bots that perform tasks without any external influences.
There are generally 5 types of robots:
- Pre-programmed Robots
Operate in a controlled environment and do simple jobs. Normally are designed to perform a simple task longer, faster, and more efficiently. eg. Robotic Arm
- Humanoid Robots
Looks like a human and performs human-like behaviors such as walking, carrying items, or communicating and interacting with a human. eg. UBTECH Walker
- Autonomous Robots
Normally operates independently in an open environment without human operators. Normally use sensors to perceive the environment around them and make decisions. Eg. Cleaning robots
- Teleoperated Robots
Semi-Automate robot which takes human control using a wired or wireless network. Normally work in an extreme environment to replace humans. eg. bomb disposal robot
- Augmenting Robots
For enhancing human capabilities or replace the capabilities a human lost. eg. Exoskeletons robot
Getting Started with Sensors by 
The Official BBC Micro:bit User Guide by 
Smart Robotics with LEGO MINDSTORMS Robot Inventor by