Components

A soldering iron is a hand tool used in soldering. It supplies heat to melt solder so that it can flow into the joint between two workpieces. 

An electrocardiogram records the electrical signals in the heart. It's a common and painless test used to quickly detect heart problems and monitor the heart's health. 

The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328. It works with a Mini-B USB cable instead of a standard one. 

A method of collecting electrical signals generated by the heart 

A jumper wire is an electric wire that connects remote electric circuits used for printed circuit boards. By attaching a jumper wire on the circuit, it can be short-circuited and short-cut (jump) to the electric circuit. 

During an ECG , up to 12 sensors (electrodes) are attached to the chest and limbs. The electrodes are sticky patches with wires that connect to a monitor. They record the electrical signals that make the heart beat. 

A Power Bank is a portable charger designed to recharge your electronic devices when you're on the move 

Used to interface any of the Arduino board with your computer, you can also connect your USB printer, scanner, and more to your computer. These cables Transmits data at high speeds with the error-free, high-performance transmission.