ya logre realizar el semaforo
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
c = c + 1
If c >= 0 And c <= 3 Then
Me.PictureBox1.Visible = True
Me.PictureBox2.Visible = False
Me.PictureBox3.Visible = False
End If
If c >= 4 And c <= 6 Then
Me.PictureBox1.Visible = False
Me.PictureBox2.Visible = True
Me.PictureBox3.Visible = False
End If
If c >= 7 And c <= 11 Then
Me.PictureBox1.Visible = False
Me.PictureBox2.Visible = False
Me.PictureBox3.Visible = True
c = 0
End If
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Timer1.Start()
Me.Timer1.Enabled = True
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Timer1.Enabled = False