B4R Tutorial Check the solderings of a WeMos D1 Mini

hatzisn · Jul 29, 2020

When you buy a WeMos it doesn't come assembled with the pins soldered. You will have to solder the pins. In the following schematic and code you will find a way to check the solderings of GPIO pins. All you have to do is just move the jumper wire from every GPIO Pin to the next (D0->D5->D6->D7->D8->D1->D2->D3->D4). If the led flashes when the looper code goes to your pin the soldering is fine.

B4X:

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 300
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'Public variables can be accessed from all modules.
    Public Serial1 As Serial
   
    Dim p(9) As Pin
    Dim d1 As D1Pins
   
    Dim ii As Int = 0
End Sub

Private Sub AppStart
    Serial1.Initialize(9600)
    Log("AppStart")
   
    p(0).Initialize(d1.D0, p(0).MODE_OUTPUT)
    p(0).DigitalWrite(False)
   
    p(1).Initialize(d1.D1, p(1).MODE_OUTPUT)
    p(1).DigitalWrite(False)
   
    p(2).Initialize(d1.D2, p(2).MODE_OUTPUT)
    p(2).DigitalWrite(False)
   
    p(3).Initialize(d1.D3, p(3).MODE_OUTPUT)
    p(3).DigitalWrite(False)
   
    p(4).Initialize(d1.D4, p(4).MODE_OUTPUT)
    p(4).DigitalWrite(False)
   
    p(5).Initialize(d1.D5, p(5).MODE_OUTPUT)
    p(5).DigitalWrite(False)
   
    p(6).Initialize(d1.D6, p(6).MODE_OUTPUT)
    p(6).DigitalWrite(False)
   
    p(7).Initialize(d1.D7, p(7).MODE_OUTPUT)
    p(7).DigitalWrite(False)
   
    p(8).Initialize(d1.D8, p(8).MODE_OUTPUT)
    p(8).DigitalWrite(False)
   
    AddLooper("FlashGreenLight2Times")
End Sub



Sub FlashGreenLight2Times
    ii = ii + 1
    If ii = 9 Then ii = 0
    Log("D", ii)
   
    For jj = 0 To 1
        p(ii).DigitalWrite(True)
        Delay(200)
        p(ii).DigitalWrite(False)
        Delay(200)
    Next
End Sub