Prerequisites

OS X

- install Xcode

Linux

- Kernel version 3.6 or above
- libbluetooth-dev

Ubuntu/Debian/Raspbian

``
sudo apt-get install bluetooth bluez libbluetooth-dev libudev-dev
`
Make sure node is on your path, if it's not, some options:

- symlink nodejs to node: sudo ln -s /usr/bin/nodejs /usr/bin/node
- install Node.js using the NodeSource package


Fedora / Other-RPM based


`
sudo yum install bluez bluez-libs bluez-libs-devel
`

Intel Edison

See Configure Intel Edison for Bluetooth LE (Smart) Development

FreeBSD

Make sure you have GNU Make:
`
sudo pkg install gmake
`
Disable automatic loading of the default Bluetooth stack by putting no-ubt.conf into /usr/local/etc/devd/no-ubt.conf and restarting devd (sudo service devd restart).

Unload ng_ubt kernel module if already loaded:
`
sudo kldunload ng_ubt
`

Make sure you have read and write permissions on the /dev/usb/* device that corresponds to your Bluetooth adapter.

Windows

node-gyp requirements for Windows

Install the required tools and configurations using Microsoft's windows-build-tools from an elevated PowerShell or cmd.exe (run as Administrator).
`
npm install --global --production windows-build-tools
``
node-bluetooth-hci-socket prerequisites

- Compatible Bluetooth 4.0 USB adapter
- WinUSB.aspx) driver setup for Bluetooth 4.0 USB adapter, using Zadig tool

See @don's set up guide on Bluetooth LE with Node.js and Noble on Windows