#### Overview of this book

The mission of this book is to integrate technology with the tools that children already use for crafts so that they feel that the technology is an extension of their playtime. We use coding, sensors, and micro-controllers integrated with art and craft supplies, origami, and Playdough. There are 10 fun-filled chapters that talk to children directly, and give clear instructions for non-technical parents too. We use Arduino as the controller of choice due to its easy availability and large community. By the end of the book, children will comfortably be able to set up their Arduino, read and understand code, manipulate code, and ultimately write their own code for projects. They will also be able to use basic sensors and know how components connect to each other. All the learning takes place with lots of colorful pictures and the circuits are neatly presented using wiring.
Arduino for Kids
Credits
Foreword
www.PacktPub.com
Customer Feedback
Preface
Free Chapter
The World around Us
Systems and Logic
Components and Connections
The Magic Wand
Safety Box
Make a Friend
Save Energy
High 5!
Plant, Meet Arduino!

## Understanding Series and Parallel connections

We now already understand the meaning of resistance, capacitance, voltage, and current. Every circuit needs some amount charge to flow in it to function. This need or requirement of current in the circuit is called current requirement. Whenever we apply a voltage to a circuit, the circuit uses/eats or draws current which is equal to voltage applied divided by the total resistance in the circuit. Or 1/R times the voltage applied where R is representative of resistance.

While building your circuit, sometimes you will realize that two different sensors in your circuit have two different types of current requirements; other times you have different voltage requirements. Think of this as the different tactics you use to avoid cleaning the room. In such conditions, we use resistors and capacitors in various combinations to get the desired results.

### Series connection

When you have a friend playing with you, isn't it more difficult for you to stop playing...