diff --git a/Morse_code_PCB/Morse_code_PCB.kicad_sch b/Morse_code_PCB/Morse_code_PCB.kicad_sch
index c4ec99e..63d0ae9 100644
--- a/Morse_code_PCB/Morse_code_PCB.kicad_sch
+++ b/Morse_code_PCB/Morse_code_PCB.kicad_sch
@@ -5,6 +5,57 @@
   (paper "A4")
 
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@@ -321,6 +372,69 @@
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+      (effects (font (size 1.27 1.27)) hide)
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+  (symbol (lib_id "MY:OLED_12864") (at 258.445 44.45 90) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 114181eb-7392-4a8c-8162-9def16899b0d)
+    (property "Reference" "U2" (id 0) (at 262.255 26.67 90))
+    (property "Value" "OLED_12864" (id 1) (at 262.255 29.21 90))
+    (property "Footprint" "MY:OLED12864" (id 2) (at 258.445 44.45 0)
+      (effects (font (size 1.27 1.27)) hide)
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       (effects (font (size 1.27 1.27)) hide)
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     (pin "1" (uuid faea1312-325a-42de-ac79-3fa8abc809f3))
@@ -1139,30 +2630,30 @@
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   )
 
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-    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 138.938 87.63 90)
+    (property "Reference" "R4" (id 0) (at 165.1 36.83 0))
+    (property "Value" "10K" (id 1) (at 166.37 40.64 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 168.148 40.64 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 137.16 87.63 0)
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-    (property "Value" "RotaryEncoder_Switch" (id 1) (at 151.13 92.71 0))
-    (property "Footprint" "MY:EC11" (id 2) (at 147.32 96.266 0)
+    (property "Reference" "SW1" (id 0) (at 180.34 43.18 0))
+    (property "Value" "RotaryEncoder_Switch" (id 1) (at 180.34 45.72 0))
+    (property "Footprint" "MY:EC11" (id 2) (at 176.53 49.276 0)
       (effects (font (size 1.27 1.27)) hide)
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-    (property "Datasheet" "~" (id 3) (at 151.13 93.726 0)
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   )
 
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-    (property "Footprint" "Capacitor_SMD:C_0603_1608Metric" (id 2) (at 134.3152 116.84 0)
+    (property "Footprint" "Capacitor_SMD:C_0603_1608Metric" (id 2) (at 163.5252 69.85 0)
       (effects (font (size 1.27 1.27)) hide)
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     )
-    (property "Footprint" "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" (id 2) (at 102.87 114.3 0)
+    (property "Footprint" "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" (id 2) (at 120.65 67.31 0)
       (effects (font (size 1.27 1.27)) (justify right) hide)
     )
-    (property "Datasheet" "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00088500.pdf" (id 3) (at 113.03 96.52 0)
+    (property "Datasheet" "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00088500.pdf" (id 3) (at 130.81 49.53 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 262f1ea9-0133-4b43-be36-456207ea857c))
@@ -1228,31 +2911,61 @@
     (pin "9" (uuid a29f8df0-3fae-4edf-8d9c-bd5a875b13e3))
   )
 
-  (symbol (lib_id "power:GND") (at 86.36 120.65 0) (unit 1)
+  (symbol (lib_id "Device:R") (at 48.895 36.83 270) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 4cc19d91-a625-48b1-8ed0-545300f18c5e)
+    (property "Reference" "R?" (id 0) (at 45.085 38.1 0))
+    (property "Value" "100" (id 1) (at 48.895 36.83 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 48.895 35.052 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 48.895 36.83 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid fc072efb-bb34-4952-9dc9-f880b95c62ac))
+    (pin "2" (uuid e2f49c35-5fc2-43b8-a135-cf48fb1f3b7a))
+  )
+
+  (symbol (lib_id "power:GND") (at 104.14 73.66 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 4d3fbe30-8d80-40e0-b7ae-5eda5664f629)
-    (property "Reference" "#PWR0101" (id 0) (at 86.36 127 0)
+    (property "Reference" "#PWR0101" (id 0) (at 104.14 80.01 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "GND" (id 1) (at 86.36 125.73 0))
-    (property "Footprint" "" (id 2) (at 86.36 120.65 0)
+    (property "Value" "GND" (id 1) (at 104.14 78.74 0))
+    (property "Footprint" "" (id 2) (at 104.14 73.66 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 86.36 120.65 0)
+    (property "Datasheet" "" (id 3) (at 104.14 73.66 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 86d0ebd6-3f72-4457-9c26-bbd62913d687))
   )
 
-  (symbol (lib_id "Connector:USB_C_Receptacle_USB2.0") (at 34.29 45.72 0) (unit 1)
-    (in_bom yes) (on_board yes) (fields_autoplaced)
-    (uuid 5c470add-b449-455e-95fc-baae46d35c85)
-    (property "Reference" "J1" (id 0) (at 34.29 22.86 0))
-    (property "Value" "USB_C_Receptacle_USB2.0" (id 1) (at 34.29 25.4 0))
-    (property "Footprint" "Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12" (id 2) (at 38.1 45.72 0)
+  (symbol (lib_id "Device:R") (at 53.34 43.18 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 5bf4db13-f95c-4510-aa5f-610b83763fd1)
+    (property "Reference" "R?" (id 0) (at 54.61 46.99 0))
+    (property "Value" "510" (id 1) (at 53.34 43.18 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 51.562 43.18 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "https://www.usb.org/sites/default/files/documents/usb_type-c.zip" (id 3) (at 38.1 45.72 0)
+    (property "Datasheet" "~" (id 3) (at 53.34 43.18 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid ff2610a7-442c-4c46-bbda-7b7b4e6067a9))
+    (pin "2" (uuid f7aa6541-5322-49be-899b-7df6f708d823))
+  )
+
+  (symbol (lib_id "Connector:USB_C_Receptacle_USB2.0") (at 25.4 36.195 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 5c470add-b449-455e-95fc-baae46d35c85)
+    (property "Reference" "J1" (id 0) (at 25.4 13.335 0))
+    (property "Value" "USB_C_Receptacle_USB2.0" (id 1) (at 25.4 15.875 0))
+    (property "Footprint" "Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12" (id 2) (at 29.21 36.195 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "https://www.usb.org/sites/default/files/documents/usb_type-c.zip" (id 3) (at 29.21 36.195 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "A1" (uuid f47134a4-be82-4ad4-a1ad-bf72ff4ae546))
@@ -1274,64 +2987,183 @@
     (pin "S1" (uuid 6551c37f-9afc-4b25-9b2a-c1739b8edf17))
   )
 
-  (symbol (lib_id "Device:R") (at 86.36 92.71 180) (unit 1)
+  (symbol (lib_id "Device:C") (at 48.26 25.4 0) (unit 1)
     (in_bom yes) (on_board yes)
-    (uuid 8969f576-03fa-4e04-b345-8d7fcf6d78ae)
-    (property "Reference" "R1" (id 0) (at 83.82 92.71 90))
-    (property "Value" "1K" (id 1) (at 86.36 92.71 90))
-    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 88.138 92.71 90)
+    (uuid 5dd32f3d-960d-444f-be85-96d5b718d202)
+    (property "Reference" "C?" (id 0) (at 48.895 23.495 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "104" (id 1) (at 48.895 27.305 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Capacitor_SMD:C_0805_2012Metric" (id 2) (at 49.2252 29.21 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 86.36 92.71 0)
+    (property "Datasheet" "~" (id 3) (at 48.26 25.4 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 3eea6f0a-0692-479a-a4ab-f9353cbbcbec))
+    (pin "2" (uuid 236f37ba-9a9a-4c25-a058-1ca2ff8aacbf))
+  )
+
+  (symbol (lib_id "Device:R") (at 239.395 29.21 180) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 5fe77581-e082-411e-b0a9-d3ca1deb21c8)
+    (property "Reference" "R?" (id 0) (at 238.125 25.4 0))
+    (property "Value" "10K" (id 1) (at 239.395 29.21 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 241.173 29.21 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 239.395 29.21 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid c68cb1da-69e3-438d-97da-e246a97cb27c))
+    (pin "2" (uuid 5a2af9e3-ad5e-40ea-88cf-da84e56dc935))
+  )
+
+  (symbol (lib_id "Device:C") (at 82.55 114.935 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 717c74ff-da7e-4c8a-9177-76b8f8088b08)
+    (property "Reference" "C?" (id 0) (at 83.185 113.03 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "104" (id 1) (at 83.185 116.84 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Capacitor_SMD:C_0805_2012Metric" (id 2) (at 83.5152 118.745 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 82.55 114.935 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid aaec88af-d643-4126-80db-c81e31967a01))
+    (pin "2" (uuid 8c4dffce-f105-4bc2-a95f-645846fb2180))
+  )
+
+  (symbol (lib_id "power:GND") (at 219.71 60.96 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 74832892-b126-4130-9b1d-3b45fc1825e9)
+    (property "Reference" "#PWR?" (id 0) (at 219.71 67.31 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "GND" (id 1) (at 219.71 66.04 0))
+    (property "Footprint" "" (id 2) (at 219.71 60.96 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 219.71 60.96 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 4ec2be26-7cd0-454a-8256-3566a7a5bbfa))
+  )
+
+  (symbol (lib_id "Device:R") (at 251.46 65.405 180) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 826abb1f-2fe3-453e-845f-518a2402a58a)
+    (property "Reference" "R?" (id 0) (at 250.19 61.595 0))
+    (property "Value" "10K" (id 1) (at 251.46 65.405 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 253.238 65.405 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 251.46 65.405 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 768e39de-01aa-4717-af7d-65f894311b41))
+    (pin "2" (uuid 540cf886-2384-46f3-a63e-6b8b35edaaed))
+  )
+
+  (symbol (lib_id "Device:R") (at 44.45 114.935 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 8838c95d-46a5-42c9-90f7-ecf52f82b593)
+    (property "Reference" "R?" (id 0) (at 45.72 118.745 0))
+    (property "Value" "20K" (id 1) (at 44.45 114.935 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 42.672 114.935 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 44.45 114.935 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid c5304c3a-1463-4a6f-ad1e-61b3fe7f6780))
+    (pin "2" (uuid f1435094-ccf9-47e9-8c84-0c9c44a8f781))
+  )
+
+  (symbol (lib_id "Device:R") (at 104.14 45.72 180) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 8969f576-03fa-4e04-b345-8d7fcf6d78ae)
+    (property "Reference" "R1" (id 0) (at 101.6 45.72 90))
+    (property "Value" "1K" (id 1) (at 104.14 45.72 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 105.918 45.72 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 104.14 45.72 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 69f29e22-58a1-4ec1-8c23-ee51e8f4c259))
     (pin "2" (uuid 43a97a34-6e09-450c-9d6c-7a2d4023ae58))
   )
 
-  (symbol (lib_id "Device:R") (at 133.35 87.63 180) (unit 1)
+  (symbol (lib_id "Device:R") (at 162.56 40.64 180) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid 89f59fa2-3d49-44cc-bb2f-0edc891f14dd)
-    (property "Reference" "R3" (id 0) (at 132.08 83.82 0))
-    (property "Value" "10K" (id 1) (at 133.35 87.63 90))
-    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 135.128 87.63 90)
+    (property "Reference" "R3" (id 0) (at 161.29 36.83 0))
+    (property "Value" "10K" (id 1) (at 162.56 40.64 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 164.338 40.64 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 133.35 87.63 0)
+    (property "Datasheet" "~" (id 3) (at 162.56 40.64 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 053499dd-8128-4eca-8da0-7986fcd8c634))
     (pin "2" (uuid 74325750-11da-4437-adc9-93c347a1a90b))
   )
 
-  (symbol (lib_id "Device:C") (at 138.43 113.03 0) (unit 1)
+  (symbol (lib_id "Device:C") (at 167.64 66.04 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid 8d79db4c-3394-4ced-8c77-c4047f4038f6)
-    (property "Reference" "C3" (id 0) (at 135.89 110.49 0)
+    (property "Reference" "C3" (id 0) (at 165.1 63.5 0)
       (effects (font (size 1.27 1.27)) (justify left))
     )
-    (property "Value" "10nF" (id 1) (at 133.35 115.57 0)
+    (property "Value" "10nF" (id 1) (at 162.56 68.58 0)
       (effects (font (size 1.27 1.27)) (justify left))
     )
-    (property "Footprint" "Capacitor_SMD:C_0603_1608Metric" (id 2) (at 139.3952 116.84 0)
+    (property "Footprint" "Capacitor_SMD:C_0603_1608Metric" (id 2) (at 168.6052 69.85 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 138.43 113.03 0)
+    (property "Datasheet" "~" (id 3) (at 167.64 66.04 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 4b75edd4-f1e3-4e56-bc35-9781741ca1c6))
     (pin "2" (uuid e990d4aa-3652-4433-98b4-deb8fc5b6e36))
   )
 
-  (symbol (lib_id "Connector:AudioJack3_Ground") (at 138.43 30.48 0) (unit 1)
+  (symbol (lib_id "Transistor_FET:AO3401A") (at 246.38 71.755 180) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 93980fdc-94bb-414f-bc14-1f8a7c5ac14f)
+    (property "Reference" "Q?" (id 0) (at 240.03 70.4849 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "AO3401A" (id 1) (at 240.03 73.0249 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Package_TO_SOT_SMD:SOT-23" (id 2) (at 241.3 69.85 0)
+      (effects (font (size 1.27 1.27) italic) (justify left) hide)
+    )
+    (property "Datasheet" "http://www.aosmd.com/pdfs/datasheet/AO3401A.pdf" (id 3) (at 246.38 71.755 0)
+      (effects (font (size 1.27 1.27)) (justify left) hide)
+    )
+    (pin "1" (uuid d8eb93fd-c559-48c2-b3a8-0c7f721cbbb9))
+    (pin "2" (uuid bcdec3e3-3337-4ead-b6b3-27e94360a668))
+    (pin "3" (uuid 1c358b91-989a-4038-b556-b071732a4666))
+  )
+
+  (symbol (lib_id "Connector:AudioJack3_Ground") (at 59.055 179.07 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 93b86c17-095d-4de5-a8b5-bb4c5838f14a)
-    (property "Reference" "J3" (id 0) (at 136.525 21.59 0))
-    (property "Value" "AudioJack3_Ground" (id 1) (at 136.525 24.13 0))
-    (property "Footprint" "Connector_Audio:Jack_3.5mm_PJ320D_Horizontal" (id 2) (at 138.43 30.48 0)
+    (property "Reference" "J3" (id 0) (at 57.15 170.18 0))
+    (property "Value" "AudioJack3_Ground" (id 1) (at 57.15 172.72 0))
+    (property "Footprint" "Connector_Audio:Jack_3.5mm_PJ320D_Horizontal" (id 2) (at 59.055 179.07 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 138.43 30.48 0)
+    (property "Datasheet" "~" (id 3) (at 59.055 179.07 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "G" (uuid 078b1699-0e61-45ee-88ef-faf7848b3af7))
@@ -1340,15 +3172,34 @@
     (pin "T" (uuid 32b2c495-e1b0-4b43-8bbd-0d73ca6e3cf3))
   )
 
-  (symbol (lib_id "Connector:AudioJack3_Ground") (at 115.57 30.48 0) (unit 1)
+  (symbol (lib_id "Device:Buzzer") (at 246.38 83.82 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
-    (uuid 9b532d94-5adf-40a9-aa2f-bc58284f6753)
-    (property "Reference" "J2" (id 0) (at 113.665 21.59 0))
-    (property "Value" "AudioJack3_Ground" (id 1) (at 113.665 24.13 0))
-    (property "Footprint" "Connector_Audio:Jack_3.5mm_PJ320D_Horizontal" (id 2) (at 115.57 30.48 0)
+    (uuid 972eb069-8d6d-41f6-83d3-1d7e45627208)
+    (property "Reference" "BZ?" (id 0) (at 250.825 82.5499 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "Buzzer" (id 1) (at 250.825 85.0899 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Buzzer_Beeper:Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm" (id 2) (at 245.745 81.28 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 115.57 30.48 0)
+    (property "Datasheet" "~" (id 3) (at 245.745 81.28 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid adb892fd-139b-4f48-b1a4-da5c993161d9))
+    (pin "2" (uuid 52bf5f1e-b0b0-45c5-a9cc-30fb48e7f10a))
+  )
+
+  (symbol (lib_id "Connector:AudioJack3_Ground") (at 36.195 179.07 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 9b532d94-5adf-40a9-aa2f-bc58284f6753)
+    (property "Reference" "J2" (id 0) (at 34.29 170.18 0))
+    (property "Value" "AudioJack3_Ground" (id 1) (at 34.29 172.72 0))
+    (property "Footprint" "Connector_Audio:Jack_3.5mm_PJ320D_Horizontal" (id 2) (at 36.195 179.07 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 36.195 179.07 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "G" (uuid e4d20864-fb88-4526-a011-fb7569f00b9f))
@@ -1357,75 +3208,546 @@
     (pin "T" (uuid 624d2f49-55a9-4026-926e-56da40049d01))
   )
 
-  (symbol (lib_id "power:VCC") (at 81.28 67.31 0) (unit 1)
+  (symbol (lib_id "Device:C") (at 76.835 114.935 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 9c11c8c1-6307-4b77-9b8e-eaf8d6ab410d)
+    (property "Reference" "C?" (id 0) (at 77.47 113.03 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "10uF" (id 1) (at 77.47 116.84 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Capacitor_SMD:C_2220_5650Metric" (id 2) (at 77.8002 118.745 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 76.835 114.935 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 44697a8b-3919-489d-97c9-e92ee28fe653))
+    (pin "2" (uuid ccdd9ea8-b569-48e4-b835-17b0f4e8725c))
+  )
+
+  (symbol (lib_id "Device:R") (at 234.95 100.33 180) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid a1097a92-cef9-42d6-b9c8-a5124e584eca)
+    (property "Reference" "R?" (id 0) (at 233.68 96.52 0))
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+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 236.728 100.33 90)
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+    (property "Value" "2K" (id 1) (at 45.72 82.55 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 45.72 80.772 90)
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       (reference "#PWR0102") (unit 1) (value "VCC") (footprint "")
     )
+    (path "/027c4eb0-3204-4471-a868-d61a4aae5e1a"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/0e1f760d-8c5a-4a77-ac4a-b9f9cd1354a9"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/0f664c53-5577-4e32-ba3c-f887bfc86c01"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
+    (path "/1aea102e-8455-467f-a6e1-b7dc367e5a10"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
+    (path "/1b0a040c-9f42-4598-8d74-3937c6181a95"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/1ed65464-66f9-4d55-a09d-6bb5c200525c"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
+    (path "/42a81118-3b2b-47bd-bc1d-f00037264b7c"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/74832892-b126-4130-9b1d-3b45fc1825e9"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
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+    (path "/cef81ed1-b993-44f5-a61c-5035b25226e1"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
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+    (path "/da1096a4-0ecd-4b01-971c-7656c87afcbb"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/dcda9a2f-c22c-4de1-98d4-d2ede815dbff"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/e9999b27-52cc-41e4-afae-8d04f7d483bf"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
+    (path "/ecac5dc8-a0f8-4c7a-9d00-87bef52ecc6f"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
+    (path "/f0311b0b-1d2c-42fe-b993-4d409ff10a3c"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/972eb069-8d6d-41f6-83d3-1d7e45627208"
+      (reference "BZ?") (unit 1) (value "Buzzer") (footprint "Buzzer_Beeper:Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm")
+    )
     (path "/f8dea8cf-a10c-43e1-a39f-f07ef45cfa96"
       (reference "C1") (unit 1) (value "100nF") (footprint "Capacitor_SMD:C_0805_2012Metric")
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       (reference "C3") (unit 1) (value "10nF") (footprint "Capacitor_SMD:C_0603_1608Metric")
     )
+    (path "/0daf393c-07f8-427f-9554-0ecc7f1b44bd"
+      (reference "C?") (unit 1) (value "10uF") (footprint "Capacitor_SMD:C_2220_5650Metric")
+    )
+    (path "/2d338117-477b-4e82-a08e-a090de86844c"
+      (reference "C?") (unit 1) (value "10uF") (footprint "Capacitor_SMD:C_2220_5650Metric")
+    )
+    (path "/3b9e04fa-f5bd-4389-9d68-6a53eb7630d9"
+      (reference "C?") (unit 1) (value "10uF") (footprint "Capacitor_SMD:C_2220_5650Metric")
+    )
+    (path "/5dd32f3d-960d-444f-be85-96d5b718d202"
+      (reference "C?") (unit 1) (value "104") (footprint "Capacitor_SMD:C_0805_2012Metric")
+    )
+    (path "/717c74ff-da7e-4c8a-9177-76b8f8088b08"
+      (reference "C?") (unit 1) (value "104") (footprint "Capacitor_SMD:C_0805_2012Metric")
+    )
+    (path "/9c11c8c1-6307-4b77-9b8e-eaf8d6ab410d"
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+    )
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+      (reference "C?") (unit 1) (value "104") (footprint "Capacitor_SMD:C_0805_2012Metric")
+    )
+    (path "/e7e0052c-3e13-4581-99c7-2bd19cd19294"
+      (reference "C?") (unit 1) (value "104") (footprint "Capacitor_SMD:C_0805_2012Metric")
+    )
+    (path "/415ffa92-5385-41ae-9cce-35614ebe21cf"
+      (reference "D?") (unit 1) (value "1N4148WT") (footprint "Diode_SMD:D_SOD-523")
+    )
+    (path "/a9669e73-0978-4947-a094-689a18b0faaf"
+      (reference "D?") (unit 1) (value "LED") (footprint "LED_SMD:LED_0603_1608Metric")
+    )
+    (path "/afbb71ae-8838-4abe-bedc-bb552b7b1c7d"
+      (reference "D?") (unit 1) (value "LED") (footprint "LED_SMD:LED_0603_1608Metric")
+    )
+    (path "/ba50dcc8-5bbd-4264-91b9-75a161f252c6"
+      (reference "D?") (unit 1) (value "1N4148WT") (footprint "Diode_SMD:D_SOD-523")
+    )
+    (path "/e995b640-0e0d-40f1-baf5-cbbca9a87c4e"
+      (reference "D?") (unit 1) (value "1N4148WT") (footprint "Diode_SMD:D_SOD-523")
+    )
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       (reference "J1") (unit 1) (value "USB_C_Receptacle_USB2.0") (footprint "Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12")
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@@ -1458,6 +3864,18 @@
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       (reference "L1") (unit 1) (value "100mH") (footprint "Inductor_SMD:L_0805_2012Metric")
     )
+    (path "/93980fdc-94bb-414f-bc14-1f8a7c5ac14f"
+      (reference "Q?") (unit 1) (value "AO3401A") (footprint "Package_TO_SOT_SMD:SOT-23")
+    )
+    (path "/b68ef65c-4e1d-4f1f-b670-988ac039a2a1"
+      (reference "Q?") (unit 1) (value "AO3400A") (footprint "Package_TO_SOT_SMD:SOT-23")
+    )
+    (path "/e57a8c57-be2a-4ea7-be41-423bd6c03c44"
+      (reference "Q?") (unit 1) (value "AO3401A") (footprint "Package_TO_SOT_SMD:SOT-23")
+    )
+    (path "/fcb41881-c9cb-478a-9b39-b27b7306d1ef"
+      (reference "Q?") (unit 1) (value "AO3400A") (footprint "Package_TO_SOT_SMD:SOT-23")
+    )
     (path "/8969f576-03fa-4e04-b345-8d7fcf6d78ae"
       (reference "R1") (unit 1) (value "1K") (footprint "Resistor_SMD:R_0603_1608Metric")
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@@ -1470,6 +3888,57 @@
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       (reference "R4") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
     )
+    (path "/160da0f8-ffc1-4521-b663-985be0e35229"
+      (reference "R?") (unit 1) (value "100") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/24690760-2269-4e12-a914-4a79ca256393"
+      (reference "R?") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/32e5518b-5e24-4756-b583-015ce860c6eb"
+      (reference "R?") (unit 1) (value "20K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/39220a33-8dec-43c5-a397-9878d2b9ba0c"
+      (reference "R?") (unit 1) (value "20K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/4250bdc0-c5bf-4e94-b2ad-5c4016ca562b"
+      (reference "R?") (unit 1) (value "20K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/4cc19d91-a625-48b1-8ed0-545300f18c5e"
+      (reference "R?") (unit 1) (value "100") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/5bf4db13-f95c-4510-aa5f-610b83763fd1"
+      (reference "R?") (unit 1) (value "510") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/5fe77581-e082-411e-b0a9-d3ca1deb21c8"
+      (reference "R?") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/826abb1f-2fe3-453e-845f-518a2402a58a"
+      (reference "R?") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/8838c95d-46a5-42c9-90f7-ecf52f82b593"
+      (reference "R?") (unit 1) (value "20K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/a1097a92-cef9-42d6-b9c8-a5124e584eca"
+      (reference "R?") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/b54d8cd9-ece4-4703-be3e-fa97b33d2029"
+      (reference "R?") (unit 1) (value "2K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/b97012cc-0f92-42c4-98d4-804fadb5b954"
+      (reference "R?") (unit 1) (value "1K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/bfaf6174-0339-4ea1-ba70-73a95cf9aacd"
+      (reference "R?") (unit 1) (value "*R0") (footprint "Resistor_SMD:R_0402_1005Metric")
+    )
+    (path "/cba80511-2d97-4527-bf5e-8b6b0c65757a"
+      (reference "R?") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/cea57a11-9535-44ff-8bef-e68a23376a2f"
+      (reference "R?") (unit 1) (value "10K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
+    (path "/fd8d0539-55bd-4d00-911a-2dc562ccecaf"
+      (reference "R?") (unit 1) (value "2K") (footprint "Resistor_SMD:R_0603_1608Metric")
+    )
     (path "/14f2ae6e-5c6f-4b04-a137-aaaffc15e481"
       (reference "SW1") (unit 1) (value "RotaryEncoder_Switch") (footprint "MY:EC11")
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@@ -1479,5 +3948,17 @@
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       (reference "U2") (unit 1) (value "OLED_12864") (footprint "MY:OLED12864")
     )
+    (path "/b12aa96f-c96f-430d-a62c-839d74848054"
+      (reference "U?") (unit 1) (value "MCP73831-2-OT") (footprint "Package_TO_SOT_SMD:SOT-23-5")
+    )
+    (path "/be287c62-1fc6-4a9d-b9ca-596c13d522fb"
+      (reference "U?") (unit 1) (value "24AA02-OT") (footprint "Package_SO:TSSOP-8_4.4x3mm_P0.65mm")
+    )
+    (path "/d1649c49-73bf-461b-85a3-76adaec8115c"
+      (reference "U?") (unit 1) (value "CH340E") (footprint "Package_SO:MSOP-10_3x3mm_P0.5mm")
+    )
+    (path "/f7e336c3-2e8b-4336-adc8-928ff75b2342"
+      (reference "U?") (unit 1) (value "LP5907MFX-3.3") (footprint "Package_TO_SOT_SMD:SOT-23-5")
+    )
   )
 )
diff --git a/stm32F030F4_code/.settings/language.settings.xml b/stm32F030F4_code/.settings/language.settings.xml
index 38e5664..90a581c 100644
--- a/stm32F030F4_code/.settings/language.settings.xml
+++ b/stm32F030F4_code/.settings/language.settings.xml
@@ -6,7 +6,7 @@
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
 			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
-			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="-659096296470971324" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="1149651542092161892" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
@@ -18,7 +18,7 @@
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
 			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
-			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="-659096296470971324" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="1149651542092161892" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
diff --git a/stm32F030F4_code/Core/Inc/main.h b/stm32F030F4_code/Core/Inc/main.h
index fae94da..dfd528e 100644
--- a/stm32F030F4_code/Core/Inc/main.h
+++ b/stm32F030F4_code/Core/Inc/main.h
@@ -74,6 +74,10 @@ void Error_Handler(void);
 #define SW_B_GPIO_Port GPIOA
 #define SW_C_Pin GPIO_PIN_1
 #define SW_C_GPIO_Port GPIOB
+#define PWR_EN_Pin GPIO_PIN_13
+#define PWR_EN_GPIO_Port GPIOA
+#define RUN_LED_Pin GPIO_PIN_14
+#define RUN_LED_GPIO_Port GPIOA
 /* USER CODE BEGIN Private defines */
 
 /* USER CODE END Private defines */
diff --git a/stm32F030F4_code/Core/Src/main.c b/stm32F030F4_code/Core/Src/main.c
index 92931a5..6d8b484 100644
--- a/stm32F030F4_code/Core/Src/main.c
+++ b/stm32F030F4_code/Core/Src/main.c
@@ -356,7 +356,7 @@ static void MX_GPIO_Init(void)
   __HAL_RCC_GPIOB_CLK_ENABLE();
 
   /*Configure GPIO pin Output Level */
-  HAL_GPIO_WritePin(buzzer_mute_GPIO_Port, buzzer_mute_Pin, GPIO_PIN_RESET);
+  HAL_GPIO_WritePin(GPIOA, buzzer_mute_Pin|PWR_EN_Pin|RUN_LED_Pin, GPIO_PIN_RESET);
 
   /*Configure GPIO pins : tack_A_Pin tack_B_Pin */
   GPIO_InitStruct.Pin = tack_A_Pin|tack_B_Pin;
@@ -370,12 +370,12 @@ static void MX_GPIO_Init(void)
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(charge_det_GPIO_Port, &GPIO_InitStruct);
 
-  /*Configure GPIO pin : buzzer_mute_Pin */
-  GPIO_InitStruct.Pin = buzzer_mute_Pin;
+  /*Configure GPIO pins : buzzer_mute_Pin PWR_EN_Pin RUN_LED_Pin */
+  GPIO_InitStruct.Pin = buzzer_mute_Pin|PWR_EN_Pin|RUN_LED_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-  HAL_GPIO_Init(buzzer_mute_GPIO_Port, &GPIO_InitStruct);
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
   /*Configure GPIO pins : SW_A_Pin SW_B_Pin */
   GPIO_InitStruct.Pin = SW_A_Pin|SW_B_Pin;
diff --git a/stm32F030F4_code/stm32F030F4_code.ioc b/stm32F030F4_code/stm32F030F4_code.ioc
index b99d395..ab78f9f 100644
--- a/stm32F030F4_code/stm32F030F4_code.ioc
+++ b/stm32F030F4_code/stm32F030F4_code.ioc
@@ -51,10 +51,14 @@ PA1.Locked=true
 PA1.Signal=GPIO_Input
 PA10.Mode=I2C
 PA10.Signal=I2C1_SDA
-PA13.Mode=Serial_Wire
-PA13.Signal=SYS_SWDIO
-PA14.Mode=Serial_Wire
-PA14.Signal=SYS_SWCLK
+PA13.GPIOParameters=GPIO_Label
+PA13.GPIO_Label=PWR_EN
+PA13.Locked=true
+PA13.Signal=GPIO_Output
+PA14.GPIOParameters=GPIO_Label
+PA14.GPIO_Label=RUN_LED
+PA14.Locked=true
+PA14.Signal=GPIO_Output
 PA2.Mode=Asynchronous
 PA2.Signal=USART1_TX
 PA3.Mode=Asynchronous