diff --git a/schematic/ATMEGA328P_connectedMailBox.pdf b/schematic/ATMEGA328P_connectedMailBox.pdf
new file mode 100644
index 0000000..70f6640
Binary files /dev/null and b/schematic/ATMEGA328P_connectedMailBox.pdf differ
diff --git a/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.kicad_pcb b/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.kicad_pcb
new file mode 100644
index 0000000..02c8ecb
--- /dev/null
+++ b/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.kicad_pcb
@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )
diff --git a/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.pro b/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.pro
new file mode 100644
index 0000000..ec6fc9b
--- /dev/null
+++ b/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.pro
@@ -0,0 +1,43 @@
+update=02/10/2022 11:45:31
+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]
+[schematic_editor]
+version=1
+PageLayoutDescrFile=
+PlotDirectoryName=../../
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=
+SpiceAjustPassiveValues=0
+LabSize=50
+ERC_TestSimilarLabels=1
diff --git a/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.sch b/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.sch
new file mode 100644
index 0000000..4264585
--- /dev/null
+++ b/schematic/KiCad/ATMEGA328P_connectedMailBox/ATMEGA328P_connectedMailBox.sch
@@ -0,0 +1,863 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title "ATMEGA328PU Connected Mailbox"
+Date "2022-10-01"
+Rev "1.0"
+Comp "www.web-directories.cf"
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L Connector:Conn_01x02_Male J1
+U 1 1 633823BB
+P 2250 1250
+F 0 "J1" H 2358 1431 50  0000 C CNN
+F 1 "BAT_Conn_01x02_Male" H 2358 1340 50  0000 C CNN
+F 2 "" H 2250 1250 50  0001 C CNN
+F 3 "~" H 2250 1250 50  0001 C CNN
+	1    2250 1250
+	1    0    0    -1  
+$EndComp
+$Comp
+L Battery_Management:TC4056 U2
+U 1 1 63382FD1
+P 3500 1250
+F 0 "U2" H 3500 1475 50  0000 C CNN
+F 1 "TC4056" H 3500 1384 50  0000 C CNN
+F 2 "" H 3500 1450 50  0001 C CNN
+F 3 "" H 3500 1450 50  0001 C CNN
+	1    3500 1250
+	1    0    0    -1  
+$EndComp
+$Comp
+L Switch:SW_SPDT SW1
+U 1 1 63383B33
+P 4550 1250
+F 0 "SW1" H 4550 1535 50  0000 C CNN
+F 1 "SW_SPDT" H 4550 1444 50  0000 C CNN
+F 2 "" H 4550 1250 50  0001 C CNN
+F 3 "~" H 4550 1250 50  0001 C CNN
+	1    4550 1250
+	1    0    0    -1  
+$EndComp
+$Comp
+L Regulator_Linear:RT9013-33 U3
+U 1 1 633847A2
+P 5550 1200
+F 0 "U3" H 5550 1517 50  0000 C CNN
+F 1 "RT9013-33" H 5550 1426 50  0000 C CNN
+F 2 "" H 5550 1200 50  0001 C CNN
+F 3 "" H 5550 1200 50  0001 C CNN
+	1    5550 1200
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:USB_B_Micro J2
+U 1 1 633858C9
+P 2450 1900
+F 0 "J2" H 2507 2367 50  0000 C CNN
+F 1 "USB_B_Micro" H 2507 2276 50  0000 C CNN
+F 2 "" H 2600 1850 50  0001 C CNN
+F 3 "~" H 2600 1850 50  0001 C CNN
+	1    2450 1900
+	1    0    0    -1  
+$EndComp
+$Comp
+L RF:NRF24L01_Breakout U4
+U 1 1 63386EBE
+P 8700 1650
+F 0 "U4" H 9080 1696 50  0000 L CNN
+F 1 "NRF24L01_Breakout" H 9080 1605 50  0000 L CNN
+F 2 "RF_Module:nRF24L01_Breakout" H 8850 2250 50  0001 L CIN
+F 3 "http://www.nordicsemi.com/eng/content/download/2730/34105/file/nRF24L01_Product_Specification_v2_0.pdf" H 8700 1550 50  0001 C CNN
+	1    8700 1650
+	1    0    0    -1  
+$EndComp
+$Comp
+L Transistor_FET:IRLML6402 Q1
+U 1 1 6338A5CF
+P 3050 3450
+F 0 "Q1" H 3255 3404 50  0000 L CNN
+F 1 "IRLML6402" H 3255 3495 50  0000 L CNN
+F 2 "Package_TO_SOT_SMD:SOT-23" H 3250 3375 50  0001 L CIN
+F 3 "https://www.infineon.com/dgdl/irlml6402pbf.pdf?fileId=5546d462533600a401535668d5c2263c" H 3050 3450 50  0001 L CNN
+	1    3050 3450
+	-1   0    0    1   
+$EndComp
+$Comp
+L Transistor_FET:IRLML2060 Q2
+U 1 1 6338BEA2
+P 4300 3650
+F 0 "Q2" H 4504 3696 50  0000 L CNN
+F 1 "IRLML2502" H 4504 3605 50  0000 L CNN
+F 2 "Package_TO_SOT_SMD:SOT-23" H 4500 3575 50  0001 L CIN
+F 3 "https://www.infineon.com/dgdl/irlml2060pbf.pdf?fileId=5546d462533600a401535664b7fb25ee" H 4300 3650 50  0001 L CNN
+	1    4300 3650
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2450 1250 2850 1250
+Wire Wire Line
+	2850 1350 2450 1350
+Wire Wire Line
+	2850 1700 2850 1450
+Wire Wire Line
+	2750 1700 2850 1700
+NoConn ~ 2750 1900
+NoConn ~ 2750 2000
+NoConn ~ 2750 2100
+Wire Wire Line
+	4150 1450 4150 2400
+Wire Wire Line
+	4150 2400 2400 2400
+Wire Wire Line
+	2400 2400 2400 2350
+Wire Wire Line
+	2400 2350 2450 2350
+Wire Wire Line
+	2450 2350 2450 2300
+Wire Wire Line
+	2350 2300 2350 2350
+Wire Wire Line
+	2350 2350 2400 2350
+Connection ~ 2400 2350
+Wire Wire Line
+	4150 1250 4350 1250
+NoConn ~ 4750 1350
+Wire Wire Line
+	4750 1150 4950 1150
+$Comp
+L power:VDD #PWR01
+U 1 1 6339D3EB
+P 4950 1000
+F 0 "#PWR01" H 4950 850 50  0001 C CNN
+F 1 "VDD" H 4965 1173 50  0000 C CNN
+F 2 "" H 4950 1000 50  0001 C CNN
+F 3 "" H 4950 1000 50  0001 C CNN
+	1    4950 1000
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4950 1000 4950 1150
+Connection ~ 4950 1150
+Wire Wire Line
+	4950 1150 5200 1150
+$Comp
+L Device:R R1
+U 1 1 6339F279
+P 5050 1500
+F 0 "R1" V 4843 1500 50  0000 C CNN
+F 1 "10k" V 4934 1500 50  0000 C CNN
+F 2 "" V 4980 1500 50  0001 C CNN
+F 3 "~" H 5050 1500 50  0001 C CNN
+	1    5050 1500
+	0    1    1    0   
+$EndComp
+Wire Wire Line
+	5200 1250 5200 1500
+Text GLabel 4750 1500 0    50   Input ~ 0
+LDO_EN
+Wire Wire Line
+	4750 1500 4900 1500
+Wire Wire Line
+	4150 1350 4250 1350
+Wire Wire Line
+	4250 1350 4250 1600
+Wire Wire Line
+	4250 1600 4950 1600
+Wire Wire Line
+	5550 1600 5550 1450
+$Comp
+L power:GND #PWR02
+U 1 1 633A278F
+P 4950 1800
+F 0 "#PWR02" H 4950 1550 50  0001 C CNN
+F 1 "GND" H 4955 1627 50  0000 C CNN
+F 2 "" H 4950 1800 50  0001 C CNN
+F 3 "" H 4950 1800 50  0001 C CNN
+	1    4950 1800
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4950 1800 4950 1600
+Connection ~ 4950 1600
+Wire Wire Line
+	4950 1600 5550 1600
+$Comp
+L power:+3.3V #PWR03
+U 1 1 633A3F97
+P 6150 1150
+F 0 "#PWR03" H 6150 1000 50  0001 C CNN
+F 1 "+3.3V" H 6165 1323 50  0000 C CNN
+F 2 "" H 6150 1150 50  0001 C CNN
+F 3 "" H 6150 1150 50  0001 C CNN
+	1    6150 1150
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	5900 1150 6150 1150
+$Comp
+L Device:R R4
+U 1 1 633A99AE
+P 3350 3300
+F 0 "R4" H 3280 3254 50  0000 R CNN
+F 1 "10k" H 3280 3345 50  0000 R CNN
+F 2 "" V 3280 3300 50  0001 C CNN
+F 3 "~" H 3350 3300 50  0001 C CNN
+	1    3350 3300
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	3250 3450 3350 3450
+Wire Wire Line
+	3350 3150 2950 3150
+Wire Wire Line
+	2950 3150 2950 3250
+$Comp
+L power:VDD #PWR04
+U 1 1 633AF4F9
+P 2950 3000
+F 0 "#PWR04" H 2950 2850 50  0001 C CNN
+F 1 "VDD" H 2965 3173 50  0000 C CNN
+F 2 "" H 2950 3000 50  0001 C CNN
+F 3 "" H 2950 3000 50  0001 C CNN
+	1    2950 3000
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2950 3000 2950 3150
+Connection ~ 2950 3150
+Wire Wire Line
+	3350 3450 4400 3450
+Connection ~ 3350 3450
+$Comp
+L Device:R R2
+U 1 1 633B6A30
+P 2950 4050
+F 0 "R2" H 2880 4004 50  0000 R CNN
+F 1 "1k" H 2880 4095 50  0000 R CNN
+F 2 "" V 2880 4050 50  0001 C CNN
+F 3 "~" H 2950 4050 50  0001 C CNN
+	1    2950 4050
+	-1   0    0    1   
+$EndComp
+$Comp
+L Device:R R3
+U 1 1 633B7564
+P 2950 4550
+F 0 "R3" H 2880 4504 50  0000 R CNN
+F 1 "3.2k" H 2880 4595 50  0000 R CNN
+F 2 "" V 2880 4550 50  0001 C CNN
+F 3 "~" H 2950 4550 50  0001 C CNN
+	1    2950 4550
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	2950 4700 2950 4750
+Wire Wire Line
+	2950 4200 2950 4300
+Wire Wire Line
+	2950 3900 2950 3650
+Wire Wire Line
+	2950 4750 4400 4750
+Wire Wire Line
+	4400 4750 4400 3950
+Connection ~ 2950 4750
+Wire Wire Line
+	2950 4750 2950 4800
+$Comp
+L Device:R R5
+U 1 1 633BA42A
+P 3950 3800
+F 0 "R5" H 3880 3754 50  0000 R CNN
+F 1 "10k" H 3880 3845 50  0000 R CNN
+F 2 "" V 3880 3800 50  0001 C CNN
+F 3 "~" H 3950 3800 50  0001 C CNN
+	1    3950 3800
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	3950 3950 4400 3950
+Connection ~ 4400 3950
+Wire Wire Line
+	4400 3950 4400 3850
+Wire Wire Line
+	3950 3650 4100 3650
+Text GLabel 3750 3650 0    50   Input ~ 0
+BAT_V_SENSE_EN
+Wire Wire Line
+	3750 3650 3950 3650
+Connection ~ 3950 3650
+Text GLabel 3100 4300 2    50   Input ~ 0
+BAT_V_SENSE
+Wire Wire Line
+	3100 4300 2950 4300
+Connection ~ 2950 4300
+Wire Wire Line
+	2950 4300 2950 4400
+$Comp
+L Device:R R6
+U 1 1 633BED7E
+P 8300 4050
+F 0 "R6" H 8230 4004 50  0000 R CNN
+F 1 "5k" H 8230 4095 50  0000 R CNN
+F 2 "" V 8230 4050 50  0001 C CNN
+F 3 "~" H 8300 4050 50  0001 C CNN
+	1    8300 4050
+	-1   0    0    1   
+$EndComp
+$Comp
+L Device:R R8
+U 1 1 633C0035
+P 8650 4050
+F 0 "R8" H 8580 4004 50  0000 R CNN
+F 1 "15k" H 8580 4095 50  0000 R CNN
+F 2 "" V 8580 4050 50  0001 C CNN
+F 3 "~" H 8650 4050 50  0001 C CNN
+	1    8650 4050
+	-1   0    0    1   
+$EndComp
+$Comp
+L Device:R R9
+U 1 1 633C0218
+P 9000 4050
+F 0 "R9" H 8930 4004 50  0000 R CNN
+F 1 "20k" H 8930 4095 50  0000 R CNN
+F 2 "" V 8930 4050 50  0001 C CNN
+F 3 "~" H 9000 4050 50  0001 C CNN
+	1    9000 4050
+	-1   0    0    1   
+$EndComp
+$Comp
+L Device:R R7
+U 1 1 633C048B
+P 8650 3550
+F 0 "R7" H 8580 3504 50  0000 R CNN
+F 1 "8.2k" H 8580 3595 50  0000 R CNN
+F 2 "" V 8580 3550 50  0001 C CNN
+F 3 "~" H 8650 3550 50  0001 C CNN
+	1    8650 3550
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	8650 3700 8650 3800
+Wire Wire Line
+	8300 3900 8650 3900
+Connection ~ 8650 3900
+Wire Wire Line
+	8650 3900 9000 3900
+$Comp
+L Switch:SW_Reed_SPDT SW4
+U 1 1 633C3F66
+P 10100 6000
+F 0 "SW4" V 10196 5856 50  0000 R CNN
+F 1 "SW_Reed_SPDT" V 10105 5856 50  0000 R CNN
+F 2 "" H 10100 6000 50  0001 C CNN
+F 3 "~" H 10100 6000 50  0001 C CNN
+	1    10100 6000
+	0    -1   -1   0   
+$EndComp
+$Comp
+L Switch:SW_Reed_SPDT SW3
+U 1 1 633C59D7
+P 8600 6000
+F 0 "SW3" V 8696 5856 50  0000 R CNN
+F 1 "SW_Reed_SPDT" V 8605 5856 50  0000 R CNN
+F 2 "" H 8600 6000 50  0001 C CNN
+F 3 "~" H 8600 6000 50  0001 C CNN
+	1    8600 6000
+	0    -1   -1   0   
+$EndComp
+$Comp
+L Switch:SW_Reed_SPDT SW2
+U 1 1 633C5EBF
+P 7150 6000
+F 0 "SW2" V 7250 5800 50  0000 C CNN
+F 1 "SW_Reed_SPDT" V 7150 5600 50  0000 C CNN
+F 2 "" H 7150 6000 50  0001 C CNN
+F 3 "~" H 7150 6000 50  0001 C CNN
+	1    7150 6000
+	0    -1   -1   0   
+$EndComp
+Text GLabel 8800 3200 2    50   Input ~ 0
+SWITCH_V_SENSE_EN
+Wire Wire Line
+	8650 3400 8650 3200
+Wire Wire Line
+	8650 3200 8800 3200
+NoConn ~ 10200 5700
+NoConn ~ 8700 5700
+NoConn ~ 7250 5700
+$Comp
+L Connector:Conn_01x02_Female J3
+U 1 1 633D5781
+P 6350 6000
+F 0 "J3" H 6242 5675 50  0000 C CNN
+F 1 "SW2_Conn_01x02_Female" H 6242 5766 50  0000 C CNN
+F 2 "" H 6350 6000 50  0001 C CNN
+F 3 "~" H 6350 6000 50  0001 C CNN
+	1    6350 6000
+	-1   0    0    1   
+$EndComp
+$Comp
+L Connector:Conn_01x02_Female J5
+U 1 1 633DA339
+P 7900 6000
+F 0 "J5" H 7792 5675 50  0000 C CNN
+F 1 "SW3_Conn_01x02_Female" H 7792 5766 50  0000 C CNN
+F 2 "" H 7900 6000 50  0001 C CNN
+F 3 "~" H 7900 6000 50  0001 C CNN
+	1    7900 6000
+	-1   0    0    1   
+$EndComp
+$Comp
+L Connector:Conn_01x02_Female J8
+U 1 1 633DE1F5
+P 9450 6000
+F 0 "J8" H 9342 5675 50  0000 C CNN
+F 1 "SW4_Conn_01x02_Female" H 9342 5766 50  0000 C CNN
+F 2 "" H 9450 6000 50  0001 C CNN
+F 3 "~" H 9450 6000 50  0001 C CNN
+	1    9450 6000
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	10100 6200 9650 6200
+Wire Wire Line
+	9650 6200 9650 6000
+Wire Wire Line
+	9650 5900 9950 5900
+Wire Wire Line
+	8100 6000 8100 6200
+Wire Wire Line
+	8100 6200 8600 6200
+Wire Wire Line
+	8100 5900 8450 5900
+Wire Wire Line
+	8450 5900 8450 5700
+Wire Wire Line
+	8450 5700 8500 5700
+Wire Wire Line
+	9950 5900 9950 5700
+Wire Wire Line
+	9950 5700 10000 5700
+Wire Wire Line
+	6550 6000 6550 6200
+Wire Wire Line
+	6550 6200 7150 6200
+Wire Wire Line
+	7050 5700 7000 5700
+Wire Wire Line
+	7000 5700 7000 5900
+Wire Wire Line
+	7000 5900 6550 5900
+$Comp
+L Connector:Conn_01x02_Male J4
+U 1 1 633E825E
+P 7700 4450
+F 0 "J4" H 7808 4631 50  0000 C CNN
+F 1 "SW2_Conn_01x02_Male" H 7250 4400 50  0000 C CNN
+F 2 "" H 7700 4450 50  0001 C CNN
+F 3 "~" H 7700 4450 50  0001 C CNN
+	1    7700 4450
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:Conn_01x02_Male J6
+U 1 1 633EAEDB
+P 8400 4450
+F 0 "J6" H 8508 4631 50  0000 C CNN
+F 1 "SW3_Conn_01x02_Male" H 8600 4400 50  0000 C CNN
+F 2 "" H 8400 4450 50  0001 C CNN
+F 3 "~" H 8400 4450 50  0001 C CNN
+	1    8400 4450
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:Conn_01x02_Male J7
+U 1 1 633EBEA7
+P 9150 4450
+F 0 "J7" H 9258 4631 50  0000 C CNN
+F 1 "SW4_Conn_01x02_Male" H 9800 4400 50  0000 C CNN
+F 2 "" H 9150 4450 50  0001 C CNN
+F 3 "~" H 9150 4450 50  0001 C CNN
+	1    9150 4450
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR011
+U 1 1 633EC93B
+P 8650 4700
+F 0 "#PWR011" H 8650 4450 50  0001 C CNN
+F 1 "GND" H 8655 4527 50  0000 C CNN
+F 2 "" H 8650 4700 50  0001 C CNN
+F 3 "" H 8650 4700 50  0001 C CNN
+	1    8650 4700
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	7900 4550 8050 4550
+Wire Wire Line
+	8050 4550 8050 4700
+Wire Wire Line
+	8050 4700 8650 4700
+Wire Wire Line
+	8600 4550 8650 4550
+Wire Wire Line
+	8650 4550 8650 4700
+Connection ~ 8650 4700
+Wire Wire Line
+	9350 4550 9350 4700
+Wire Wire Line
+	9350 4700 8650 4700
+Wire Wire Line
+	8300 4200 8300 4450
+Wire Wire Line
+	8300 4450 7900 4450
+Wire Wire Line
+	8650 4200 8650 4450
+Wire Wire Line
+	8650 4450 8600 4450
+Wire Wire Line
+	9000 4200 9000 4250
+Wire Wire Line
+	9000 4250 9350 4250
+Wire Wire Line
+	9350 4250 9350 4450
+NoConn ~ 8200 1950
+$Comp
+L power:+3.3V #PWR012
+U 1 1 633FCB30
+P 8700 950
+F 0 "#PWR012" H 8700 800 50  0001 C CNN
+F 1 "+3.3V" H 8715 1123 50  0000 C CNN
+F 2 "" H 8700 950 50  0001 C CNN
+F 3 "" H 8700 950 50  0001 C CNN
+	1    8700 950 
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:CP C1
+U 1 1 633FFDC6
+P 9000 1000
+F 0 "C1" V 9255 1000 50  0000 C CNN
+F 1 "330µF" V 9164 1000 50  0000 C CNN
+F 2 "" H 9038 850 50  0001 C CNN
+F 3 "~" H 9000 1000 50  0001 C CNN
+	1    9000 1000
+	0    -1   -1   0   
+$EndComp
+$Comp
+L power:GND #PWR013
+U 1 1 63403470
+P 8700 2350
+F 0 "#PWR013" H 8700 2100 50  0001 C CNN
+F 1 "GND" H 8705 2177 50  0000 C CNN
+F 2 "" H 8700 2350 50  0001 C CNN
+F 3 "" H 8700 2350 50  0001 C CNN
+	1    8700 2350
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	8700 2350 8700 2250
+$Comp
+L power:GND #PWR014
+U 1 1 63405872
+P 9300 1050
+F 0 "#PWR014" H 9300 800 50  0001 C CNN
+F 1 "GND" H 9305 877 50  0000 C CNN
+F 2 "" H 9300 1050 50  0001 C CNN
+F 3 "" H 9300 1050 50  0001 C CNN
+	1    9300 1050
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	9150 1000 9300 1000
+Wire Wire Line
+	9300 1000 9300 1050
+Text GLabel 8050 1850 0    50   Input ~ 0
+NRF_CE
+Wire Wire Line
+	8050 1850 8200 1850
+Text GLabel 8050 1650 0    50   Input ~ 0
+NRF_CS
+Text GLabel 8100 1550 0    50   Input ~ 0
+NRF_SCK
+Wire Wire Line
+	8100 1550 8200 1550
+Wire Wire Line
+	8050 1650 8200 1650
+Text GLabel 8100 1450 0    50   Input ~ 0
+NRF_MISO
+Wire Wire Line
+	8100 1450 8200 1450
+Text GLabel 8100 1350 0    50   Input ~ 0
+NRF_MOSI
+Wire Wire Line
+	8200 1350 8100 1350
+Text GLabel 8850 3800 2    50   Input ~ 0
+SWITCH_V_SENSE
+Wire Wire Line
+	8850 3800 8650 3800
+Connection ~ 8650 3800
+Wire Wire Line
+	8650 3800 8650 3900
+Wire Wire Line
+	3100 7250 3100 7400
+$Comp
+L power:GND #PWR07
+U 1 1 6349F1D5
+P 3100 7400
+F 0 "#PWR07" H 3100 7150 50  0001 C CNN
+F 1 "GND" H 3105 7227 50  0000 C CNN
+F 2 "" H 3100 7400 50  0001 C CNN
+F 3 "" H 3100 7400 50  0001 C CNN
+	1    3100 7400
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2450 6050 2600 6050
+Wire Wire Line
+	2450 5650 2450 6050
+Wire Wire Line
+	2200 5650 2450 5650
+Wire Wire Line
+	2200 5700 2200 5650
+$Comp
+L power:GND #PWR06
+U 1 1 6349A7EC
+P 2200 5700
+F 0 "#PWR06" H 2200 5450 50  0001 C CNN
+F 1 "GND" H 2205 5527 50  0000 C CNN
+F 2 "" H 2200 5700 50  0001 C CNN
+F 3 "" H 2200 5700 50  0001 C CNN
+	1    2200 5700
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2100 5950 2200 5950
+Text GLabel 2100 5950 0    50   Input ~ 0
+SWITCH_V_SENSE
+Wire Wire Line
+	2200 6250 2600 6250
+Wire Wire Line
+	2100 6450 2600 6450
+Wire Wire Line
+	2100 6550 2600 6550
+Wire Wire Line
+	2100 6650 2600 6650
+Wire Wire Line
+	2100 6750 2600 6750
+$Comp
+L Device:R R10
+U 1 1 63476300
+P 2200 6100
+F 0 "R10" H 2130 6054 50  0000 R CNN
+F 1 "3.9k" H 2130 6145 50  0000 R CNN
+F 2 "" V 2130 6100 50  0001 C CNN
+F 3 "~" H 2200 6100 50  0001 C CNN
+	1    2200 6100
+	-1   0    0    1   
+$EndComp
+NoConn ~ 2600 6950
+NoConn ~ 2600 6850
+Text GLabel 2100 6750 0    50   Input ~ 0
+SWITCH_V_SENSE_EN
+Text GLabel 2100 6650 0    50   Input ~ 0
+NRF_CE
+NoConn ~ 2600 6150
+NoConn ~ 2600 6350
+Text GLabel 2100 6450 0    50   Input ~ 0
+LDO_EN
+NoConn ~ 3500 6050
+Wire Wire Line
+	3850 5850 3500 5850
+$Comp
+L power:GND #PWR010
+U 1 1 63452AE8
+P 3850 5850
+F 0 "#PWR010" H 3850 5600 50  0001 C CNN
+F 1 "GND" H 3855 5677 50  0000 C CNN
+F 2 "" H 3850 5850 50  0001 C CNN
+F 3 "" H 3850 5850 50  0001 C CNN
+	1    3850 5850
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3500 5750 3850 5750
+$Comp
+L power:VDD #PWR09
+U 1 1 6344BDD8
+P 3850 5750
+F 0 "#PWR09" H 3850 5600 50  0001 C CNN
+F 1 "VDD" H 3865 5923 50  0000 C CNN
+F 2 "" H 3850 5750 50  0001 C CNN
+F 3 "" H 3850 5750 50  0001 C CNN
+	1    3850 5750
+	1    0    0    -1  
+$EndComp
+NoConn ~ 3500 6350
+NoConn ~ 3500 6250
+NoConn ~ 3500 6150
+NoConn ~ 3500 5950
+NoConn ~ 3100 5400
+NoConn ~ 3000 5400
+NoConn ~ 2900 5400
+NoConn ~ 2800 5400
+NoConn ~ 2600 5950
+NoConn ~ 2600 5850
+NoConn ~ 2600 5750
+NoConn ~ 3200 7250
+NoConn ~ 3300 7250
+Wire Wire Line
+	3800 6950 3500 6950
+Text GLabel 3800 6950 2    50   Input ~ 0
+NRF_CS
+Wire Wire Line
+	3800 6750 3500 6750
+Text GLabel 3800 6850 2    50   Input ~ 0
+NRF_MOSI
+Wire Wire Line
+	3800 6850 3500 6850
+Text GLabel 3800 6750 2    50   Input ~ 0
+NRF_MISO
+Wire Wire Line
+	3500 6650 3800 6650
+Text GLabel 3800 6650 2    50   Input ~ 0
+NRF_SCK
+Wire Wire Line
+	3800 6450 3500 6450
+Text GLabel 3800 6450 2    50   Input ~ 0
+SWITCH_V_SENSE
+Wire Wire Line
+	3500 6550 3800 6550
+Text GLabel 3800 6550 2    50   Input ~ 0
+BAT_V_SENSE
+Text GLabel 2100 6550 0    50   Input ~ 0
+BAT_V_SENSE_EN
+Wire Wire Line
+	3250 5250 3250 5300
+Wire Wire Line
+	3450 5250 3250 5250
+$Comp
+L power:GND #PWR08
+U 1 1 634156BC
+P 3450 5250
+F 0 "#PWR08" H 3450 5000 50  0001 C CNN
+F 1 "GND" H 3455 5077 50  0000 C CNN
+F 2 "" H 3450 5250 50  0001 C CNN
+F 3 "" H 3450 5250 50  0001 C CNN
+	1    3450 5250
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3300 5300 3300 5400
+Wire Wire Line
+	3200 5400 3200 5300
+$Comp
+L power:GND #PWR05
+U 1 1 633B7D64
+P 2950 4800
+F 0 "#PWR05" H 2950 4550 50  0001 C CNN
+F 1 "GND" H 2955 4627 50  0000 C CNN
+F 2 "" H 2950 4800 50  0001 C CNN
+F 3 "" H 2950 4800 50  0001 C CNN
+	1    2950 4800
+	1    0    0    -1  
+$EndComp
+$Comp
+L MCU_Module:ATMEGA328PU_PROMINI U1
+U 1 1 633887B2
+P 3050 6300
+F 0 "U1" H 3050 6300 50  0000 C CNN
+F 1 "ATMEGA328PU_PROMINI" H 2550 5350 50  0000 C CNN
+F 2 "" H 3100 6850 50  0001 C CNN
+F 3 "" H 3100 6850 50  0001 C CNN
+	1    3050 6300
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	8850 1000 8700 1000
+Wire Wire Line
+	8700 1000 8700 1050
+Wire Wire Line
+	8700 950  8700 1000
+Connection ~ 8700 1000
+Wire Wire Line
+	3200 5300 3250 5300
+Connection ~ 3250 5300
+Wire Wire Line
+	3250 5300 3300 5300
+Wire Notes Line
+	6450 2600 750  2600
+Wire Notes Line
+	6600 2600 10950 2600
+Wire Notes Line
+	10950 650  6600 650 
+Wire Notes Line
+	10950 650  10950 2600
+Wire Notes Line
+	6600 650  6600 2600
+Wire Notes Line
+	6450 650  6450 2600
+Wire Notes Line
+	750  650  6450 650 
+Wire Notes Line
+	750  650  750  2600
+Wire Notes Line
+	6600 2700 10950 2700
+Wire Notes Line
+	10950 5100 6600 5100
+Wire Notes Line
+	5850 5300 5850 6450
+Wire Notes Line
+	5850 6450 10950 6450
+Wire Notes Line
+	10950 6450 10950 5300
+Wire Notes Line
+	5850 5300 10950 5300
+Wire Notes Line
+	750  5200 4900 5200
+Wire Notes Line
+	4900 5200 4900 7700
+Wire Notes Line
+	4900 7700 750  7700
+Wire Notes Line
+	750  7700 750  5200
+Wire Notes Line
+	750  2700 6450 2700
+Wire Notes Line
+	6450 2700 6450 5100
+Wire Notes Line
+	6450 5100 750  5100
+Wire Notes Line
+	750  2700 750  5100
+Text Notes 800  750  0    50   ~ 0
+Main power part
+Text Notes 6650 750  0    50   ~ 0
+NRF transmitter part
+Text Notes 6650 2800 0    50   ~ 0
+Reed switch detection part
+Wire Notes Line
+	10950 2700 10950 5100
+Wire Notes Line
+	6600 2700 6600 5100
+Text Notes 800  2800 0    50   ~ 0
+Battery voltage sense part
+Text Notes 800  5300 0    50   ~ 0
+ATMEGA328P MCU part
+Text Notes 5900 5400 0    50   ~ 0
+Reed switch part
+Text Notes 6800 4450 0    50   ~ 0
+Letter event switch
+Text Notes 8200 4600 0    50   ~ 0
+Package event switch
+Text Notes 9350 4450 0    50   ~ 0
+Collected event switch
+$EndSCHEMATC