How to install or upgrade to Composer v2

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Composer is an application-level package manager for the PHP programming language that provides a standard format for managing dependencies of PHP software and required libraries. It manages them on a per-project basis, installing them in a directory (e.g. vendor) inside your project.

How to use the NRF24L01 module with Arduino

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Having two or more Arduino boards be able to communicate with each other wirelessly over a distance opens lots of possibilities like remotely monitoring sensor data, controlling robots, home automation and the list goes on. A good, reliable and inexpensive solution is NRF24L01.

The NRF24L01+ is a newer version of the NRF24L01, capable of doing an extra 250kbps of on-air data rate while the one without “+” has only 1Mbps and 2Mbps. Both versions can be mixed together as long as 1 or 2 MBps is being used as the data rate.

Downloading and installing Node.js and NPM

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NPM stands for Node Package Manager, which is an application and repository for developing and sharing JavaScript code. To publish and install packages to and from the public NPM registry or a private NPM registry, you must install Node.js and the NPM command line interface using either a Node version manager or a Node installer.

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How to install & start using Composer

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Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.

Composer requires PHP 5.3.2+ to run. A few sensitive PHP settings and compile flags are also required, but when using the installer you will be warned about any incompatibilities.

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