VBA Saving delay after data entry - excel

Question

VBA newbie here. I am looking for a way that will allow my excel file to automatically save after a delay of 1 min after data input.
For example:
User Inputs Data --> Timer Starts (1min)
5 seconds passes.
User inputs Data --> Timer Restarts (1min)
1 min passes.
Excel File Saves - until the user starts inputting data again
Any thoughts?

Answer 1

One possibility is to leverage the Workbook.SheetChange event and Application.OnTime. You'll also need a Public variable, ScheduledTime in the example below.
Every time any (non-chart) sheet is changed (e.g. via data entry):
Any previously scheduled save, as long as it's still within the one-minute window, is cancelled.
A new save is scheduled for one minute out.
So something like the following:
In the ThisWorkbook code module:
Option Explicit
Public ScheduledTime
Private Sub Workbook_SheetChange(ByVal Sh As Object, _
ByVal Target As Range)
On Error Resume Next
Application.OnTime EarliestTime:=ScheduledTime, Procedure:="SaveTheFile", Schedule:=False
On Error GoTo 0
ScheduledTime = Now + TimeValue("00:01:00")
Application.OnTime EarliestTime:=ScheduledTime, Procedure:="SaveTheFile"
End Sub
In a regular code module:
Public Sub SaveTheFile()
ThisWorkbook.Save
End Sub
You could just as well use the Worksheet Change event if you want to restrict this to a particular sheet.

Answer 2

I have a similar take on this to BigBen.
In ThisWorkbook module:
Option Explicit
Public SnapShot As String
Private Sub Workbook_Open()
StartTimer
End Sub
Sub StartTimer()
If SnapShot = vbNullString Then SnapShot = Now
If DateDiff("s", SnapShot, VBA.CStr(Now)) >= 10 Then ThisWorkbook.Save
RestartTimer
End Sub
Sub RestartTimer()
Application.OnTime Now + TimeValue("00:00:10"), "ThisWorkbook.StartTimer"
End Sub
And then in the worksheet you are monitoring:
Option Explicit
Private Sub Worksheet_Change(ByVal Target As Range)
ThisWorkbook.SnapShot = Now
End Sub