diff --git a/bh.kicad_sym b/bh.kicad_sym
index b451998..1ddbe83 100755
--- a/bh.kicad_sym
+++ b/bh.kicad_sym
@@ -53198,6 +53198,266 @@
 			)
 		)
 	)
+	(symbol "LMR70503TMX/NOPB"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "U"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Value" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Footprint" "common:BGA40P160X80X68-8-TI_YFX"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" "https://www.ti.com/lit/ds/symlink/lmr70503.pdf"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "Regulator, Switching, Inverting"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "MPN" "LMR70503TMX/NOPB"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Manufacturer" "Texas Instruments"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Sim.Library" "common_libraries/spice/ti/LMR70503_TRANS.lib"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Sim.Name" "LMR70503_TRANS"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Sim.Device" "SUBCKT"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Sim.Pins" "A1=VREF A2=FB B1=EN B2=VOUT C1=GND D1=SW D2=VIN"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "LMR70503TMX/NOPB_1_1"
+			(rectangle
+				(start 0 0)
+				(end 12.7 -27.94)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(pin output line
+				(at 15.24 -25.4 180)
+				(length 2.54)
+				(name "VREF"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "A1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at 15.24 -17.78 180)
+				(length 2.54)
+				(name "FB"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "A2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -2.54 -15.24 0)
+				(length 2.54)
+				(name "EN"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "B1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_out line
+				(at 15.24 -10.16 180)
+				(length 2.54)
+				(name "VOUT"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "B2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at -2.54 -22.86 0)
+				(length 2.54)
+				(name "GND"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "C1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at -2.54 -25.4 0)
+				(length 2.54)
+				(name "GND"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "C2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin output line
+				(at 15.24 -2.54 180)
+				(length 2.54)
+				(name "SW"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "D1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at -2.54 -2.54 0)
+				(length 2.54)
+				(name "VIN"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "D2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
 	(symbol "LOGO_BH"
 		(exclude_from_sim yes)
 		(in_bom no)
@@ -72396,6 +72656,275 @@
 			)
 		)
 	)
+	(symbol "SPICE_VARISTOR"
+		(pin_numbers hide)
+		(pin_names hide)
+		(exclude_from_sim no)
+		(in_bom no)
+		(on_board no)
+		(property "Reference" "A"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" "1"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" ""
+			(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)
+			)
+		)
+		(property "Sim.Device" "SPICE"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Sim.Params" "model=\"A NC--1 NC--2 NC--3 NC--4 NC--5 NC--6 NC--7 NC--8 VARISTOR rclamp=${Value}\""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "SPICE_VARISTOR_0_1"
+			(polyline
+				(pts
+					(xy -3.81 -2.54) (xy -2.54 -1.27) (xy -1.27 -1.27)
+				)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy -3.81 2.54) (xy -2.54 1.27) (xy -1.27 1.27)
+				)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy 0 -2.54) (xy 0 -2.286) (xy 1.016 -1.905) (xy -1.016 -1.27) (xy 1.016 -0.635) (xy -1.016 0)
+					(xy 1.016 0.635) (xy -1.016 1.27) (xy 1.016 1.905) (xy 0 2.286) (xy 0 2.54)
+				)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+		)
+		(symbol "SPICE_VARISTOR_1_1"
+			(text "+"
+				(at -4.318 1.778 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+				)
+			)
+			(text "-"
+				(at -4.318 -1.778 0)
+				(effects
+					(font
+						(size 1.27 1.27)
+					)
+				)
+			)
+			(pin passive line
+				(at -5.08 -2.54 0)
+				(length 1.27)
+				(name "VIN_N"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at -5.08 2.54 0)
+				(length 1.27)
+				(name "VIN_P"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 0 -3.81 90)
+				(length 0) hide
+				(name "~"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 0 -3.81 90)
+				(length 0) hide
+				(name "~"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 0 -3.81 90)
+				(length 0) hide
+				(name "~"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 0 -3.81 90)
+				(length 0) hide
+				(name "~"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 0 3.81 270)
+				(length 1.27)
+				(name "SRC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "7"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 0 -3.81 90)
+				(length 1.27)
+				(name "RTN"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "8"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
 	(symbol "STM32F410CBU3"
 		(exclude_from_sim no)
 		(in_bom yes)
@@ -97491,6 +98020,117 @@
 			)
 		)
 	)
+	(symbol "VDC_N3V3"
+		(power)
+		(pin_names
+			(offset 0)
+		)
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "#PWR"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Value" "VDC_N3V3"
+			(at 0 3.556 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" ""
+			(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" "Power Symbol"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "VDC_N3V3_0_1"
+			(polyline
+				(pts
+					(xy -0.762 1.27) (xy 0 2.54)
+				)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy 0 0) (xy 0 2.54)
+				)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy 0 2.54) (xy 0.762 1.27)
+				)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+		)
+		(symbol "VDC_N3V3_1_1"
+			(pin power_in line
+				(at 0 0 90)
+				(length 0) hide
+				(name "VDC_N3V3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
 	(symbol "VDC_N5V0"
 		(power)
 		(pin_names
@@ -98482,6 +99122,211 @@
 			)
 		)
 	)
+	(symbol "XC6901D301ER-G"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "U"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Footprint" "common:DFN50P180X200X60-6P_TOREX_USP-6C"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" "https://product.torexsemi.com/system/files/series/xc6901.pdf"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "Regulator, Linear, Fixed, Negative 3V0"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "mfg" "Torex Semiconductor Ltd"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "mpn" "XC6901D301ER-G"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(symbol "XC6901D301ER-G_1_1"
+			(rectangle
+				(start 0 0)
+				(end 17.78 -20.32)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(pin power_in line
+				(at -2.54 -15.24 0)
+				(length 2.54)
+				(name "PAD"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "0"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_out line
+				(at 20.32 -17.78 180)
+				(length 2.54)
+				(name "-VOUT"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin no_connect line
+				(at 20.32 -2.54 180)
+				(length 2.54)
+				(name "NC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at -2.54 -17.78 0)
+				(length 2.54)
+				(name "-VIN"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -2.54 -2.54 0)
+				(length 2.54)
+				(name "CE"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin no_connect line
+				(at 20.32 -5.08 180)
+				(length 2.54)
+				(name "NC"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at -2.54 -10.16 0)
+				(length 2.54)
+				(name "GND"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
 	(symbol "XC7Z020-1CLG484I"
 		(exclude_from_sim no)
 		(in_bom yes)