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soilmoisture.sch
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soilmoisture.sch
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EESchema Schematic File Version 4
LIBS:soilmoisture-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Fanstel-modules:BT840 U1
U 1 1 5BBD5037
P 3950 2650
F 0 "U1" H 4000 4654 45 0000 C CNN
F 1 "BT840" H 4000 4570 45 0000 C CNN
F 2 "Fanstel_modules:BT840-BT840" H 3780 2800 20 0001 C CNN
F 3 "" H 3750 2650 60 0001 C CNN
1 3950 2650
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0101
U 1 1 5BBD60DC
P 1400 1650
F 0 "#PWR0101" H 1400 1400 50 0001 C CNN
F 1 "GND" H 1405 1477 50 0000 C CNN
F 2 "" H 1400 1650 50 0001 C CNN
F 3 "" H 1400 1650 50 0001 C CNN
1 1400 1650
1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 1400 1500
Wire Wire Line
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Wire Wire Line
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Connection ~ 1400 1350
Wire Wire Line
1400 1350 1400 1500
Wire Wire Line
1500 1200 1400 1200
Connection ~ 1400 1200
Wire Wire Line
1400 1200 1400 1350
$Comp
L power:GND #PWR0103
U 1 1 5BBD7652
P 6500 2950
F 0 "#PWR0103" H 6500 2700 50 0001 C CNN
F 1 "GND" V 6505 2822 50 0000 R CNN
F 2 "" H 6500 2950 50 0001 C CNN
F 3 "" H 6500 2950 50 0001 C CNN
1 6500 2950
0 -1 -1 0
$EndComp
Text Label 6500 2050 0 50 ~ 0
SWDIO
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SWDCLK
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nRST
Text Label 8700 2250 2 50 ~ 0
nRST
Text Label 8700 1950 2 50 ~ 0
SWDIO
Text Label 8700 2050 2 50 ~ 0
SWDCLK
$Comp
L power:GND #PWR0102
U 1 1 5BBD64BC
P 9200 1350
F 0 "#PWR0102" H 9200 1100 50 0001 C CNN
F 1 "GND" H 9205 1177 50 0000 C CNN
F 2 "" H 9200 1350 50 0001 C CNN
F 3 "" H 9200 1350 50 0001 C CNN
1 9200 1350
-1 0 0 1
$EndComp
$Comp
L Connector:Conn_ARM_JTAG_SWD_10 J1
U 1 1 5BBD51D4
P 9200 1950
F 0 "J1" H 8759 1904 50 0000 R CNN
F 1 "Conn_ARM_JTAG_SWD_10" H 8759 1995 50 0000 R CNN
F 2 "Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD" H 9250 1400 50 0001 L TNN
F 3 "http://infocenter.arm.com/help/topic/com.arm.doc.faqs/attached/13634/cortex_debug_connectors.pdf" V 8850 700 50 0001 C CNN
1 9200 1950
-1 0 0 1
$EndComp
$Comp
L power:+BATT #PWR0104
U 1 1 5BBD88BD
P 6000 3900
F 0 "#PWR0104" H 6000 3750 50 0001 C CNN
F 1 "+BATT" H 6015 4073 50 0000 C CNN
F 2 "" H 6000 3900 50 0001 C CNN
F 3 "" H 6000 3900 50 0001 C CNN
1 6000 3900
-1 0 0 1
$EndComp
$Comp
L power:VDD #PWR0105
U 1 1 5BBD8948
P 9200 2550
F 0 "#PWR0105" H 9200 2400 50 0001 C CNN
F 1 "VDD" H 9218 2723 50 0000 C CNN
F 2 "" H 9200 2550 50 0001 C CNN
F 3 "" H 9200 2550 50 0001 C CNN
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-1 0 0 1
$EndComp
$Comp
L power:VDD #PWR0106
U 1 1 5BBD8996
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F 2 "" H 6500 3100 50 0001 C CNN
F 3 "" H 6500 3100 50 0001 C CNN
1 6500 3100
0 1 1 0
$EndComp
$Comp
L BAT-HLD-001:BAT-HLD-001 U2
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F 2 "BAT-HLD-001:BAT-HLD-001" H 3050 5700 50 0001 L BNN
F 3 "None" H 3050 5700 50 0001 L BNN
F 4 "Unavailable" H 3050 5700 50 0001 L BNN "Field4"
F 5 "Linx Technologies" H 3050 5700 50 0001 L BNN "Field5"
F 6 "BAT-HLD-001-TR" H 3050 5700 50 0001 L BNN "Field6"
F 7 "None" H 3050 5700 50 0001 L BNN "Field7"
F 8 "CR2032 Battery Holder Surface Mount Tape and Reel" H 3050 5700 50 0001 L BNN "Field8"
1 3050 5700
1 0 0 -1
$EndComp
$Comp
L power:+BATT #PWR0107
U 1 1 5BBD90BC
P 3050 5600
F 0 "#PWR0107" H 3050 5450 50 0001 C CNN
F 1 "+BATT" H 3065 5773 50 0000 C CNN
F 2 "" H 3050 5600 50 0001 C CNN
F 3 "" H 3050 5600 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0108
U 1 1 5BBD91D5
P 3050 5900
F 0 "#PWR0108" H 3050 5650 50 0001 C CNN
F 1 "GND" H 3055 5727 50 0000 C CNN
F 2 "" H 3050 5900 50 0001 C CNN
F 3 "" H 3050 5900 50 0001 C CNN
1 3050 5900
1 0 0 -1
$EndComp
$Comp
L Device:C_Variable C1
U 1 1 5BBD936A
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F 1 "C_Variable" H 1715 6055 50 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1600 6100 50 0001 C CNN
F 3 "~" H 1600 6100 50 0001 C CNN
1 1600 6100
1 0 0 -1
$EndComp
$Comp
L Device:R R1
U 1 1 5BBD94E2
P 1600 5450
F 0 "R1" H 1670 5496 50 0000 L CNN
F 1 "100k" H 1670 5405 50 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 1530 5450 50 0001 C CNN
F 3 "~" H 1600 5450 50 0001 C CNN
1 1600 5450
1 0 0 -1
$EndComp
Text Label 1500 2950 2 50 ~ 0
CAP_CHARGE
Text Label 1600 5300 0 50 ~ 0
CAP_CHARGE
Text Label 1500 3100 2 50 ~ 0
CAP_DISCHARGE
$Comp
L Device:R R2
U 1 1 5BBD96BB
P 1250 6100
F 0 "R2" H 1320 6146 50 0000 L CNN
F 1 "220" H 1320 6055 50 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 1180 6100 50 0001 C CNN
F 3 "~" H 1250 6100 50 0001 C CNN
1 1250 6100
1 0 0 -1
$EndComp
Wire Wire Line
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Connection ~ 1600 5950
Text Label 1250 6250 2 50 ~ 0
CAP_DISCHARGE
Text Label 1600 5950 0 50 ~ 0
SOIL_READ
Wire Wire Line
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Text Label 1500 2650 2 50 ~ 0
SOIL_READ
$Comp
L power:GND #PWR0109
U 1 1 5BBD9BC0
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F 0 "#PWR0109" H 1600 6000 50 0001 C CNN
F 1 "GND" H 1605 6077 50 0000 C CNN
F 2 "" H 1600 6250 50 0001 C CNN
F 3 "" H 1600 6250 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L ABS07-32.768KHZ-T:ABS07-32.768KHZ-T Y1
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F 1 "ABS07-32.768KHZ-T" H 5200 6046 50 0000 C CNN
F 2 "ABS07-32.768KHZ-T:XTAL320X150X90" H 5200 5900 50 0001 L BNN
F 3 "SMD-2 Abracon" H 5200 5900 50 0001 L BNN
F 4 "Abracon" H 5200 5900 50 0001 L BNN "Field4"
F 5 "None" H 5200 5900 50 0001 L BNN "Field5"
F 6 "ABS07-32.768KHZ-T" H 5200 5900 50 0001 L BNN "Field6"
F 7 "Unavailable" H 5200 5900 50 0001 L BNN "Field7"
F 8 "ABS07 Series 32.768 kHz ±20 ppm 12.5 pF -40 to +85 °C SMT Low Profile Crystal" H 5200 5900 50 0001 L BNN "Field8"
1 5200 5900
1 0 0 -1
$EndComp
$Comp
L pspice:CAP C2
U 1 1 5BC006CA
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F 0 "C2" H 5078 6196 50 0000 L CNN
F 1 "12pF" H 5078 6105 50 0000 L CNN
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F 3 "" H 4900 6150 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L pspice:CAP C3
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F 3 "" H 5500 6150 50 0001 C CNN
1 5500 6150
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0110
U 1 1 5BC00A7B
P 5200 6400
F 0 "#PWR0110" H 5200 6150 50 0001 C CNN
F 1 "GND" H 5205 6227 50 0000 C CNN
F 2 "" H 5200 6400 50 0001 C CNN
F 3 "" H 5200 6400 50 0001 C CNN
1 5200 6400
1 0 0 -1
$EndComp
Wire Wire Line
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Connection ~ 5200 6400
Wire Wire Line
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Text Label 4900 5900 2 50 ~ 0
XL1
Text Label 5500 5900 0 50 ~ 0
XL2
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XL1
Text Label 1500 2500 2 50 ~ 0
XL2
$EndSCHEMATC