diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..080e70d
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,10 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}
diff --git a/platformio.ini b/platformio.ini
index 117b969..fbea932 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -11,7 +11,8 @@
 [env:az-delivery-devkit-v4]
 platform = espressif32
 #board = esp32cam
-board = az-delivery-devkit-v4
+#board = az-delivery-devkit-v4
+board = lolin_c3_mini
 framework = arduino
 lib_deps =
     plerup/EspSoftwareSerial@^6.16.1
diff --git a/src/adapter-pcb/adapter-pcb.kicad_pcb b/src/adapter-pcb/adapter-pcb.kicad_pcb
new file mode 100644
index 0000000..02c8ecb
--- /dev/null
+++ b/src/adapter-pcb/adapter-pcb.kicad_pcb
@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )
diff --git a/src/adapter-pcb/adapter-pcb.pro b/src/adapter-pcb/adapter-pcb.pro
new file mode 100644
index 0000000..152769c
--- /dev/null
+++ b/src/adapter-pcb/adapter-pcb.pro
@@ -0,0 +1,33 @@
+update=22/05/2015 07:44:53
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
diff --git a/src/adapter-pcb/adapter-pcb.sch b/src/adapter-pcb/adapter-pcb.sch
new file mode 100644
index 0000000..fff8c68
--- /dev/null
+++ b/src/adapter-pcb/adapter-pcb.sch
@@ -0,0 +1,4 @@
+EESchema Schematic File Version 2
+EELAYER 25 0
+EELAYER END
+$EndSCHEMATC
diff --git a/src/adapter-pcb/fp-info-cache b/src/adapter-pcb/fp-info-cache
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/src/adapter-pcb/fp-info-cache
@@ -0,0 +1 @@
+0
diff --git a/src/main.ino b/src/main.ino
index fa24c76..2377ad4 100644
--- a/src/main.ino
+++ b/src/main.ino
@@ -28,7 +28,7 @@
 #define PPK_VERSION 500
 
 // set to 1 to enable debug mode, which notes to the arduino console at 9600
-#define PPK_DEBUG 0
+#define PPK_DEBUG 1
 
 #if PPK_VERSION == 3
 #define VCC_PIN       2