Get SQL Server instances installed on a local machine

Get-SQLInstanceList.ps1

function Get-SQLInstanceList
{
<#
.SYNOPSIS
	Get SQL Server instances installed on a local machine
	
.DESCRIPTION
	The script looks in the registry path
		HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL\
	and will check which SQL*Server instances are installed and for each 
	installed instance it returns the Instance name, Instance Id and path to sqlservr.exe.
	
.LINK
	https://sqlchow.wordpress.com/2013/02/13/t-sql-tuesday-39-getting-installed-instances-querying-logs/
.LINK
.NOTES
#>
 
    try
    {
        $msSqlKey = 'HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\'
        $instNameKey = 'HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL\'
        $sqlInstLst = @()
 
        $instNames = (Get-Item -Path $instNameKey).GetValueNames()
        foreach($inst in $instNames)
        {
            $instIDKey = $instNameKey
            $instID = (Get-ItemProperty -Path $instIDKey -Name $inst).$inst
            $sqlBin = (Get-ItemProperty -Path ($msSqlKey + $instID + '\Setup') -Name SQLBinRoot).SQLBinRoot
 
            #HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10.D11\Setup
            $objInstDtls = New-Object System.Object|
                            Add-Member NoteProperty InstName $inst -PassThru|
                            Add-Member NoteProperty InstID $instID -PassThru |
                            Add-Member NoteProperty SQLBin $sqlBin -PassThru
 
            $sqlInstLst += $objInstDtls
        }
        return $sqlInstLst
    }
    catch
    {
        $(throw "Unable to get SQL Server instances on: $($env:COMPUTERNAME)")
    }
}