diff --git a/hardware/DCSensor.kicad_sch b/hardware/DCSensor.kicad_sch
index a3117fc..ae92aa9 100644
--- a/hardware/DCSensor.kicad_sch
+++ b/hardware/DCSensor.kicad_sch
@@ -1719,6 +1719,121 @@
 				)
 			)
 		)
+		(symbol "dc-sensor:Si2302DS"
+			(exclude_from_sim no)
+			(in_bom yes)
+			(on_board yes)
+			(property "Reference" "Q"
+				(at 2.032 5.08 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+				)
+			)
+			(property "Value" ""
+				(at 0 0 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+				)
+			)
+			(property "Footprint" "Package_TO_SOT_SMD:SOT-23"
+				(at 0 0 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+					(hide yes)
+				)
+			)
+			(property "Datasheet" ""
+				(at 0 0 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+					(hide yes)
+				)
+			)
+			(property "Description" ""
+				(at 0 0 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+					(hide yes)
+				)
+			)
+			(symbol "Si2302DS_1_1"
+				(rectangle
+					(start -3.81 3.81)
+					(end 3.81 -3.81)
+					(stroke
+						(width 0)
+						(type default)
+					)
+					(fill
+						(type background)
+					)
+				)
+				(pin input line
+					(at -6.35 2.54 0)
+					(length 2.54)
+					(name "Gate"
+						(effects
+							(font
+								(size 1.27 1.27)
+							)
+						)
+					)
+					(number "1"
+						(effects
+							(font
+								(size 1.27 1.27)
+							)
+						)
+					)
+				)
+				(pin output line
+					(at -6.35 0 0)
+					(length 2.54)
+					(name "Source"
+						(effects
+							(font
+								(size 1.27 1.27)
+							)
+						)
+					)
+					(number "2"
+						(effects
+							(font
+								(size 1.27 1.27)
+							)
+						)
+					)
+				)
+				(pin input line
+					(at -6.35 -2.54 0)
+					(length 2.54)
+					(name "Drain"
+						(effects
+							(font
+								(size 1.27 1.27)
+							)
+						)
+					)
+					(number "3"
+						(effects
+							(font
+								(size 1.27 1.27)
+							)
+						)
+					)
+				)
+			)
+		)
 		(symbol "easyeda:SMD1206P050TF"
 			(pin_names
 				(offset 1.016) hide)
@@ -4941,6 +5056,78 @@
 			)
 		)
 	)
+	(symbol
+		(lib_id "dc-sensor:Si2302DS")
+		(at 146.05 22.86 0)
+		(unit 1)
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(dnp no)
+		(uuid "6c9ccc1d-1888-40d4-a441-fac280346c92")
+		(property "Reference" "Q1"
+			(at 147.32 17.78 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left)
+			)
+		)
+		(property "Value" "~"
+			(at 151.13 24.13 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left)
+			)
+		)
+		(property "Footprint" "Package_TO_SOT_SMD:SOT-23"
+			(at 146.05 22.86 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 146.05 22.86 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" ""
+			(at 146.05 22.86 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(pin "3"
+			(uuid "c5390e12-c46b-45a0-a7c1-085bc0813ee7")
+		)
+		(pin "2"
+			(uuid "a6cf20dd-33b8-4361-bd5e-f9a4a436408e")
+		)
+		(pin "1"
+			(uuid "e89813b7-3459-4152-af56-d7a490844c1f")
+		)
+		(instances
+			(project ""
+				(path "/5f811af7-0996-4246-ad98-8ce761ff916c"
+					(reference "Q1")
+					(unit 1)
+				)
+			)
+		)
+	)
 	(symbol
 		(lib_id "Device:R")
 		(at 26.67 90.17 90)
@@ -6643,6 +6830,82 @@
 			)
 		)
 	)
+	(symbol
+		(lib_id "Device:R")
+		(at 133.35 19.05 90)
+		(unit 1)
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(dnp no)
+		(uuid "c8c489c6-f08a-47c7-a516-213f39331a37")
+		(property "Reference" "R9"
+			(at 133.35 19.05 90)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" "10k"
+			(at 133.35 16.51 90)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" "Resistor_SMD:R_0402_1005Metric"
+			(at 133.35 20.828 90)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" "~"
+			(at 133.35 19.05 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "Resistor"
+			(at 133.35 19.05 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "LCSC" "C25900"
+			(at 133.35 19.05 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(pin "2"
+			(uuid "9118f349-c587-426a-889b-a38ec0e5fd21")
+		)
+		(pin "1"
+			(uuid "88d34b9e-45c6-4157-a9e7-b7ebf5c205ef")
+		)
+		(instances
+			(project "DCSensor"
+				(path "/5f811af7-0996-4246-ad98-8ce761ff916c"
+					(reference "R9")
+					(unit 1)
+				)
+			)
+		)
+	)
 	(symbol
 		(lib_id "power:GND")
 		(at 35.56 33.02 0)
diff --git a/hardware/Symbols/dc-sensor.bak b/hardware/Symbols/dc-sensor.bak
new file mode 100644
index 0000000..4878102
--- /dev/null
+++ b/hardware/Symbols/dc-sensor.bak
@@ -0,0 +1,660 @@
+(kicad_symbol_lib
+	(version 20231120)
+	(generator "kicad_symbol_editor")
+	(generator_version "8.0")
+	(symbol "AHT20"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "U"
+			(at -4.318 -5.08 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" "AHT20"
+			(at 0 5.334 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" "Footprints:AHT20"
+			(at 0.254 6.096 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 2.54 1.27 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" ""
+			(at 2.54 1.27 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "AHT20_1_1"
+			(rectangle
+				(start -5.08 3.81)
+				(end 5.08 -3.81)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(pin no_connect line
+				(at -7.62 2.54 0)
+				(length 2.54)
+				(name "NC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 0 0)
+				(length 2.54)
+				(name "VDD"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at -7.62 -2.54 0)
+				(length 2.54)
+				(name "SCL"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 7.62 -2.54 180)
+				(length 2.54)
+				(name "SDA"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 7.62 0 180)
+				(length 2.54)
+				(name "GND"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin no_connect line
+				(at 7.62 2.54 180)
+				(length 2.54)
+				(name "NC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
+	(symbol "ESP-12F"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "U"
+			(at -12.7 19.05 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left)
+			)
+		)
+		(property "Value" "ESP-12F"
+			(at 12.7 19.05 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify right)
+			)
+		)
+		(property "Footprint" "Footprints:ESP-12F"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "802.11 b/g/n Wi-Fi Module"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "ki_keywords" "802.11 Wi-Fi"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "ki_fp_filters" "ESP?12*"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "ESP-12F_0_1"
+			(rectangle
+				(start -12.7 17.78)
+				(end 12.7 -15.24)
+				(stroke
+					(width 0.254)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+		)
+		(symbol "ESP-12F_1_1"
+			(pin input line
+				(at -15.24 15.24 0)
+				(length 2.54)
+				(name "~{RST}"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at 0 -17.78 90)
+				(length 2.54)
+				(name "GND"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "15"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 -7.62 180)
+				(length 2.54)
+				(name "GPIO15"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "16"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 10.16 180)
+				(length 2.54)
+				(name "GPIO2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "17"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 15.24 180)
+				(length 2.54)
+				(name "GPIO0"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "18"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 5.08 180)
+				(length 2.54)
+				(name "GPIO4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "19"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -15.24 5.08 0)
+				(length 2.54)
+				(name "ADC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 2.54 180)
+				(length 2.54)
+				(name "GPIO5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "20"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 7.62 180)
+				(length 2.54)
+				(name "GPIO3/RXD"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "21"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 12.7 180)
+				(length 2.54)
+				(name "GPIO1/TXD"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "22"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -15.24 10.16 0)
+				(length 2.54)
+				(name "EN"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 -10.16 180)
+				(length 2.54)
+				(name "GPIO16"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 -5.08 180)
+				(length 2.54)
+				(name "GPIO14"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 0 180)
+				(length 2.54)
+				(name "GPIO12"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin bidirectional line
+				(at 15.24 -2.54 180)
+				(length 2.54)
+				(name "GPIO13"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "7"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at 0 20.32 270)
+				(length 2.54)
+				(name "VCC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "8"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
+	(symbol "Si2302DS"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "Q"
+			(at 2.032 5.08 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" "Package_TO_SOT_SMD:SOT-23"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "Si2302DS_1_1"
+			(rectangle
+				(start -3.81 3.81)
+				(end 3.81 -3.81)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(pin input line
+				(at -6.35 2.54 0)
+				(length 2.54)
+				(name "Gate"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin output line
+				(at -6.35 0 0)
+				(length 2.54)
+				(name "Source"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -6.35 -2.54 0)
+				(length 2.54)
+				(name "Drain"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
+)
diff --git a/hardware/Symbols/dc-sensor.kicad_sym b/hardware/Symbols/dc-sensor.kicad_sym
index e8e41e1..4878102 100644
--- a/hardware/Symbols/dc-sensor.kicad_sym
+++ b/hardware/Symbols/dc-sensor.kicad_sym
@@ -49,7 +49,7 @@
 				(hide yes)
 			)
 		)
-		(symbol "AHT20_0_1"
+		(symbol "AHT20_1_1"
 			(rectangle
 				(start -5.08 3.81)
 				(end 5.08 -3.81)
@@ -58,11 +58,9 @@
 					(type default)
 				)
 				(fill
-					(type none)
+					(type background)
 				)
 			)
-		)
-		(symbol "AHT20_1_1"
 			(pin no_connect line
 				(at -7.62 2.54 0)
 				(length 2.54)
@@ -204,6 +202,15 @@
 				(hide yes)
 			)
 		)
+		(property "Datasheet" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
 		(property "Description" "802.11 b/g/n Wi-Fi Module"
 			(at 0 0 0)
 			(effects
@@ -535,4 +542,119 @@
 			)
 		)
 	)
+	(symbol "Si2302DS"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "Q"
+			(at 2.032 5.08 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" "Package_TO_SOT_SMD:SOT-23"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "Si2302DS_1_1"
+			(rectangle
+				(start -3.81 3.81)
+				(end 3.81 -3.81)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(pin input line
+				(at -6.35 2.54 0)
+				(length 2.54)
+				(name "Gate"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin output line
+				(at -6.35 0 0)
+				(length 2.54)
+				(name "Source"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -6.35 -2.54 0)
+				(length 2.54)
+				(name "Drain"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
 )