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I need help w/ timer delay

Need to call sum fx tgether in a loop

B4 execute next fx, there is a delay of 200ms

I tried this

'Walk

Private Sub Walk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Walk.Click
Dim a As String
Dim b As Integer
Dim c As String
Dim d As String

a = &HFF
b = &H5F
c = &H11

Call RLeg_Up()
Timer2.Start()

d = (SendWalk(0) Xor SendWalk(1) Xor SendWalk(2) Xor SendWalk(3) Xor SendWalk(4) Xor SendWalk(5) Xor SendWalk(6) Xor SendWalk(7) Xor SendWalk(8) Xor SendWalk(9) Xor SendWalk(10) Xor SendWalk(11) Xor SendWalk(12) Xor SendWalk(13) Xor SendWalk(14) Xor SendWalk(15) Xor SendWalk(16)) And &H7F
Dim all As Byte() = {a, b, c, SendWalk(0), SendWalk(1), SendWalk(2), SendWalk(3), SendWalk(4), SendWalk(5), SendWalk(6), SendWalk(7), SendWalk(8), SendWalk(9), SendWalk(10), SendWalk(11), SendWalk(12), SendWalk(13), SendWalk(14), SendWalk(15), SendWalk(16), d}

SerialPort1.Open()
SerialPort1.Write(all, 0, 21)
SerialPort1.Close()

End Sub

Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
Timer2.Stop()
If Timer2.Interval = 3000 Then
Call RLeg_Down()
End If

End Sub


To call RLeg_Up first, b4 RLeg_Down

RLeg_Up is called n then nothing happens

Help??