Nothing easier. From the electrical circuit to the first robot

Your first robot? With this book, you will immediately enter the world of electrotechnics!

Have you ever wondered how a flashlight, toaster and battery car work? If every electronic toy that you had at your fingertips, you undressed parts, and your dream was your own robot, get to work and, together with merry Lutek, enter the extraordinary world of electrotechnics!

• Find out what electric current is and how to read diagrams of simple circuits.
• Learn about the principle of battery and engine operation and learn how to use this knowledge in practice.
• Measure and calculate the work parameters of electrical components in the system.
• Discover the relationship between switches, mathematical logic and the basics of digital devices.
• Apply elementary solutions in the field of mechanics.
• Check how to build your own robot with a little help.
• Discover how many opportunities electricity offers!

Have fun learning! Follow the instructions in this book, and you'll be able to build constructions at different levels: from a simple electrical circuit with a battery and a light bulb, through all possible pesticides, plugs and switches, to a simple robot from a brush or tricycle.

Young Reader! You can study this book yourself. Do not limit yourself to reading - experiment and build models. You will not do everything right away. Collect necessary materials, complete tools and learn how to use them safely. Understand the properties of materials and technologies for their processing. If necessary, use the help of experienced DIY enthusiasts. Get interested in your work, colleagues, parents and teachers at school. The exchange of experiences and a bit of competition will have a positive impact on the results of your work.

Parent, Grandpa, Teacher! You can use this book to organize interesting activities for your pupils. This is an interesting proposition for weekend fun with your children, grandchildren or students in the school's studio. Such classes give great satisfaction to the teacher and the participants are happy.

Dont waste opportunity! A book in hand and full ahead for a great adventure!

Table of Contents
From the author (5) Chapter 1. What is electricity? (9) Chapter 2. The first electrical circuit (11)

• First experience with electricity (11)
• Electrical power sources - electrochemical cells and batteries (14)
• Electric wires (17)
• Light bulb (18)
• Additional electrotechnical accessories (19)
• Torch-key ring, or practical use of a simple scheme (22)

Chapter 3. Turning the current on and off (23)

• Electrical connectors (23)
• Connectors and logic operations (28)
• Switching in electrical circuits (32)

Chapter 4. Measurements of electrical quantities (41)

• Numbers and units (41)
• Voltage measurements in electrical circuits (50)
• Current measurement (56)

Chapter 5. Measurements and calculations in electrical circuits (63)

• Calculation of power and resistance (63)
• Calculator calculations (67)
• Capacity of the cell (70)
• Connecting cells - batteries (72)
• Connecting light bulbs (75)

Chapter 6. Electric current and magnetic field (83)

• Magnets and electromagnets (83)
• DC electric motor (89)
• Controlling the direction of rotation of the engine (91)
• H-bridge (93)

Chapter 7. My first robot (99)

• Brush Bot, or "brush" (99)
• BB-01 BB brush (100)
• BB-02 brush-brush (104)
• TBB mini brush - Tooth Brush Bot (108)
• Bot Brush Games and other professions (109)

Chapter 8. Considerations on mechanical elements (113)

• On wheel rpm and vehicle speed (113)
• About mechanical transmissions (118)
• About robots and three-wheeled vehicle (126)

Chapter 9. We build a mobile robot (131)

• Mobile robot chassis (131)
• Remote wired control (135)
• About robot programming (143)

Appendix A. How I built electric blocks (151) Appendix B. List of used electrotechnical symbols (157) Appendix C. Answers to problems in Chapter 5. (159) Index (165)