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Weather station with ModBus over RS-485
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Create tag ${ searchTerm }
Create branch ${ searchTerm }
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weather_station/hardware/ds-15901_interface/ds-15901_interface.sch

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EESchema Schematic File Version 4
LIBS:aprs_measurement_node-cache
EELAYER 29 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "APRS data aquisition module"
Date "2020-03-31"
Rev "A"
Comp "M.T. Konstapel"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
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$EndComp
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Low power shutdown:\nbring /RE high and DE low
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RS-485 DRIVER
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LEVEL CONVERTER
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Text Notes 3225 4600 0 50 ~ 0
The 120R terminator resistor\nis only needed if this node is\nat the beginning or end of\nthe RS485 line.
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$Comp
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F 2 "Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P7.50mm" H 6300 2700 50 0001 C CNN
F 3 "~" H 6300 2700 50 0001 C CNN
1 6300 2700
0 -1 -1 0
$EndComp
$Comp
L Device:R_Small R10
U 1 1 5E8F68C0
P 6600 2700
F 0 "R10" V 6675 2700 50 0000 C CNN
F 1 "330R" V 6500 2700 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 6600 2700 50 0001 C CNN
F 3 "~" H 6600 2700 50 0001 C CNN
1 6600 2700
0 -1 -1 0
$EndComp
$Comp
L Device:R_POT_Small RV2
U 1 1 5E8F74A8
P 7000 2700
F 0 "RV2" V 7100 2800 50 0000 C CNN
F 1 "100k" V 6925 2525 50 0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_ACP_CA9-V10_Vertical_Hole" H 7000 2700 50 0001 C CNN
F 3 "~" H 7000 2700 50 0001 C CNN
1 7000 2700
0 1 1 0
$EndComp
Wire Wire Line
6100 2700 6200 2700
Wire Wire Line
6500 2700 6400 2700
Wire Wire Line
6700 2700 6800 2700
Wire Wire Line
7000 2800 7000 2850
Wire Wire Line
7000 2850 6800 2850
Wire Wire Line
6800 2850 6800 2700
Connection ~ 6800 2700
Wire Wire Line
6800 2700 6900 2700
$Comp
L Device:C_Small C8
U 1 1 5E90A28B
P 4000 1800
F 0 "C8" H 4092 1846 50 0000 L CNN
F 1 "150n" H 4092 1755 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P7.50mm" H 4000 1800 50 0001 C CNN
F 3 "~" H 4000 1800 50 0001 C CNN
1 4000 1800
0 -1 -1 0
$EndComp
$Comp
L Device:R_Small R2
U 1 1 5E90AEFF
P 4225 1575
F 0 "R2" H 4166 1529 50 0000 R CNN
F 1 "120k" H 4166 1620 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 4225 1575 50 0001 C CNN
F 3 "~" H 4225 1575 50 0001 C CNN
1 4225 1575
-1 0 0 1
$EndComp
$Comp
L Device:R_Small R3
U 1 1 5E90B317
P 4225 2025
F 0 "R3" H 4166 1979 50 0000 R CNN
F 1 "120k" H 4166 2070 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 4225 2025 50 0001 C CNN
F 3 "~" H 4225 2025 50 0001 C CNN
1 4225 2025
-1 0 0 1
$EndComp
Wire Wire Line
4225 1675 4225 1800
Connection ~ 4225 1800
Wire Wire Line
4225 1800 4100 1800
Wire Wire Line
4225 1800 4225 1925
Wire Wire Line
4225 1475 4225 1425
Wire Wire Line
4225 2125 4225 2150
$Comp
L power:GND #PWR0104
U 1 1 5E92013B
P 4225 2175
F 0 "#PWR0104" H 4225 1925 50 0001 C CNN
F 1 "GND" H 4230 2002 50 0000 C CNN
F 2 "" H 4225 2175 50 0001 C CNN
F 3 "" H 4225 2175 50 0001 C CNN
1 4225 2175
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR0105
U 1 1 5E920420
P 4225 1425
F 0 "#PWR0105" H 4225 1275 50 0001 C CNN
F 1 "+5V" H 4240 1598 50 0000 C CNN
F 2 "" H 4225 1425 50 0001 C CNN
F 3 "" H 4225 1425 50 0001 C CNN
1 4225 1425
1 0 0 -1
$EndComp
Wire Wire Line
7225 1125 3850 1125
Wire Wire Line
3675 1800 3850 1800
$Comp
L Connector:Conn_01x02_Male J3
U 1 1 5E929D6C
P 3475 1800
F 0 "J3" H 3475 1875 50 0000 C CNN
F 1 "Moisture sensor 1" H 3100 1750 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 3475 1800 50 0001 C CNN
F 3 "~" H 3475 1800 50 0001 C CNN
1 3475 1800
1 0 0 -1
$EndComp
Wire Wire Line
4225 2150 3675 2150
Connection ~ 4225 2150
Wire Wire Line
4225 2150 4225 2175
Text Notes 6825 3050 0 50 ~ 0
Adjust for 500 count at\nperfect soil moisture level.
Text Notes 2075 1600 0 50 ~ 0
Soil moisture is measured with an AC\ncoupled square wave across the probe.\nAny DC across the probe from galvanic\nreactions of the soil is ignored.
$Comp
L Device:C_Small C9
U 1 1 5E96D518
P 4000 3000
F 0 "C9" H 4092 3046 50 0000 L CNN
F 1 "150n" H 4092 2955 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P7.50mm" H 4000 3000 50 0001 C CNN
F 3 "~" H 4000 3000 50 0001 C CNN
1 4000 3000
0 -1 -1 0
$EndComp
$Comp
L Device:R_Small R4
U 1 1 5E96D51E
P 4225 2775
F 0 "R4" H 4166 2729 50 0000 R CNN
F 1 "120k" H 4166 2820 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 4225 2775 50 0001 C CNN
F 3 "~" H 4225 2775 50 0001 C CNN
1 4225 2775
-1 0 0 1
$EndComp
$Comp
L Device:R_Small R6
U 1 1 5E96D524
P 4225 3225
F 0 "R6" H 4166 3179 50 0000 R CNN
F 1 "120k" H 4166 3270 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 4225 3225 50 0001 C CNN
F 3 "~" H 4225 3225 50 0001 C CNN
1 4225 3225
-1 0 0 1
$EndComp
Wire Wire Line
4225 2875 4225 3000
Connection ~ 4225 3000
Wire Wire Line
4225 3000 4100 3000
Wire Wire Line
4225 3000 4225 3125
Wire Wire Line
4225 2675 4225 2625
Wire Wire Line
4225 3325 4225 3350
$Comp
L power:GND #PWR0106
U 1 1 5E96D531
P 4225 3375
F 0 "#PWR0106" H 4225 3125 50 0001 C CNN
F 1 "GND" H 4230 3202 50 0000 C CNN
F 2 "" H 4225 3375 50 0001 C CNN
F 3 "" H 4225 3375 50 0001 C CNN
1 4225 3375
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR0107
U 1 1 5E96D537
P 4225 2625
F 0 "#PWR0107" H 4225 2475 50 0001 C CNN
F 1 "+5V" H 4240 2798 50 0000 C CNN
F 2 "" H 4225 2625 50 0001 C CNN
F 3 "" H 4225 2625 50 0001 C CNN
1 4225 2625
1 0 0 -1
$EndComp
Wire Wire Line
3675 3000 3750 3000
$Comp
L Connector:Conn_01x02_Male J6
U 1 1 5E96D540
P 3475 3000
F 0 "J6" H 3475 3075 50 0000 C CNN
F 1 "Moisture sensor 2" H 3075 2950 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 3475 3000 50 0001 C CNN
F 3 "~" H 3475 3000 50 0001 C CNN
1 3475 3000
1 0 0 -1
$EndComp
Wire Wire Line
4225 3350 3675 3350
Wire Wire Line
3675 3350 3675 3100
Connection ~ 4225 3350
Wire Wire Line
4225 3350 4225 3375
Wire Wire Line
4950 2650 4575 2650
Wire Wire Line
4575 2650 4575 1800
Wire Wire Line
4575 1800 4225 1800
Wire Wire Line
4575 2750 4575 3000
Wire Wire Line
4575 3000 4225 3000
Wire Wire Line
4575 2750 4950 2750
Wire Wire Line
3850 1125 3850 1800
Connection ~ 3850 1800
Wire Wire Line
3850 1800 3900 1800
Wire Wire Line
3675 1900 3675 2150
$Comp
L Device:R_Small R7
U 1 1 5E994EBE
P 6600 2400
F 0 "R7" V 6675 2400 50 0000 C CNN
F 1 "330R" V 6500 2400 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 6600 2400 50 0001 C CNN
F 3 "~" H 6600 2400 50 0001 C CNN
1 6600 2400
0 -1 -1 0
$EndComp
$Comp
L Device:R_POT_Small RV1
U 1 1 5E994EC4
P 7000 2400
F 0 "RV1" V 7100 2500 50 0000 C CNN
F 1 "100k" V 6925 2225 50 0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_ACP_CA9-V10_Vertical_Hole" H 7000 2400 50 0001 C CNN
F 3 "~" H 7000 2400 50 0001 C CNN
1 7000 2400
0 1 1 0
$EndComp
Wire Wire Line
6500 2400 6400 2400
Wire Wire Line
6700 2400 6800 2400
Connection ~ 6800 2400
Wire Wire Line
6800 2400 6900 2400
Wire Wire Line
7100 2400 7225 2400
Wire Wire Line
3750 3000 3750 1025
Wire Wire Line
3750 1025 7325 1025
Wire Wire Line
7325 1025 7325 2700
Connection ~ 3750 3000
Wire Wire Line
3750 3000 3900 3000
Wire Wire Line
7100 2700 7325 2700
Wire Wire Line
6200 2600 6100 2600
$Comp
L Device:C_Small C10
U 1 1 5E9BFF43
P 4475 7100
F 0 "C10" H 4567 7146 50 0000 L CNN
F 1 "100n" H 4567 7055 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm" H 4475 7100 50 0001 C CNN
F 3 "~" H 4475 7100 50 0001 C CNN
1 4475 7100
1 0 0 -1
$EndComp
Wire Wire Line
3925 6900 4475 6900
Wire Wire Line
4475 7000 4475 6900
Connection ~ 4475 6900
Wire Wire Line
4475 6900 4675 6900
Wire Wire Line
3925 7225 4475 7225
Connection ~ 5075 7225
Wire Wire Line
4475 7200 4475 7225
Connection ~ 4475 7225
Wire Wire Line
4475 7225 5075 7225
$Comp
L Transistor_FET:IRF9540N Q3
U 1 1 5EA3F718
P 3300 6725
F 0 "Q3" V 3643 6725 50 0000 C CNN
F 1 "IRF9540" V 3552 6725 50 0000 C CNN
F 2 "Package_TO_SOT_THT:TO-220-3_Vertical" H 3500 6650 50 0001 L CIN
F 3 "http://www.irf.com/product-info/datasheets/data/irf9540n.pdf" H 3300 6725 50 0001 L CNN
1 3300 6725
0 -1 -1 0
$EndComp
$Comp
L Device:C_Small C6
U 1 1 5EA40458
P 3575 7100
F 0 "C6" H 3667 7146 50 0000 L CNN
F 1 "15n" H 3667 7055 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm" H 3575 7100 50 0001 C CNN
F 3 "~" H 3575 7100 50 0001 C CNN
1 3575 7100
1 0 0 -1
$EndComp
$Comp
L Device:R_Small R1
U 1 1 5EA4099D
P 3300 7075
F 0 "R1" H 3241 7029 50 0000 R CNN
F 1 "12k" H 3241 7120 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" H 3300 7075 50 0001 C CNN
F 3 "~" H 3300 7075 50 0001 C CNN
1 3300 7075
-1 0 0 1
$EndComp
$Comp
L Device:D_Zener_Small_ALT D3
U 1 1 5EA42CAE
P 3575 6775
F 0 "D3" V 3529 6843 50 0000 L CNN
F 1 "10V" V 3620 6843 50 0000 L CNN
F 2 "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal" V 3575 6775 50 0001 C CNN
F 3 "~" V 3575 6775 50 0001 C CNN
1 3575 6775
0 1 1 0
$EndComp
Wire Wire Line
3500 6625 3575 6625
Wire Wire Line
3575 6625 3575 6675
Wire Wire Line
3925 7225 3575 7225
Connection ~ 3925 7225
Connection ~ 2400 7225
Wire Wire Line
3575 7200 3575 7225
Connection ~ 3575 7225
Wire Wire Line
2400 6725 2400 7225
Connection ~ 2325 6625
Wire Wire Line
3300 7175 3300 7225
Wire Wire Line
3300 7225 3575 7225
Wire Wire Line
3300 6925 3300 6950
Wire Wire Line
3300 6950 3575 6950
Connection ~ 3300 6950
Wire Wire Line
3300 6950 3300 6975
Connection ~ 3575 6950
Wire Wire Line
3575 6950 3575 7000
Wire Wire Line
3575 6875 3575 6950
Wire Wire Line
3575 6625 3925 6625
Wire Wire Line
3925 6625 3925 6900
Connection ~ 3575 6625
Connection ~ 3925 6625
Wire Wire Line
2325 6625 2325 7025
Text Notes 2525 7400 0 50 ~ 0
ESD and reverse polarity protection
$Comp
L Device:D_Zener_Small_ALT D1
U 1 1 5EAF3F08
P 2850 6800
F 0 "D1" V 2804 6868 50 0000 L CNN
F 1 "TVS_24V" V 2895 6868 50 0000 L CNN
F 2 "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal" V 2850 6800 50 0001 C CNN
F 3 "~" V 2850 6800 50 0001 C CNN
F 4 " TC-P6KE24CA " V 2850 6800 50 0001 C CNN "Order #"
1 2850 6800
0 1 1 0
$EndComp
$Comp
L Device:D_Zener_Small_ALT D2
U 1 1 5EAF50FC
P 2850 7050
F 0 "D2" V 2896 6982 50 0000 R CNN
F 1 "TVS_15V" V 2805 6982 50 0000 R CNN
F 2 "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal" V 2850 7050 50 0001 C CNN
F 3 "~" V 2850 7050 50 0001 C CNN
F 4 " TC-P6KE15CA " V 2850 7050 50 0001 C CNN "Order #"
1 2850 7050
0 -1 -1 0
$EndComp
Wire Wire Line
2850 6700 2850 6625
Wire Wire Line
2850 6900 2850 6950
Connection ~ 3300 7225
Wire Wire Line
2850 7150 2850 7225
$Comp
L Device:C_Small C1
U 1 1 5EB22CB1
P 2500 6800
F 0 "C1" H 2592 6846 50 0000 L CNN
F 1 "150n" H 2592 6755 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P7.50mm" H 2500 6800 50 0001 C CNN
F 3 "~" H 2500 6800 50 0001 C CNN
1 2500 6800
1 0 0 -1
$EndComp
Connection ~ 2850 6625
Wire Wire Line
2850 6625 3100 6625
Connection ~ 2850 7225
Wire Wire Line
2850 7225 3300 7225
Wire Wire Line
2325 6625 2500 6625
Wire Wire Line
2400 7225 2500 7225
$Comp
L Device:C_Small C5
U 1 1 5EB2D8FB
P 2500 7050
F 0 "C5" H 2592 7096 50 0000 L CNN
F 1 "150n" H 2592 7005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P7.50mm" H 2500 7050 50 0001 C CNN
F 3 "~" H 2500 7050 50 0001 C CNN
1 2500 7050
1 0 0 -1
$EndComp
Wire Wire Line
2500 6700 2500 6625
Connection ~ 2500 6625
Wire Wire Line
2500 6625 2850 6625
Wire Wire Line
2500 6900 2500 6950
Wire Wire Line
2500 7150 2500 7225
Connection ~ 2500 7225
Wire Wire Line
2500 7225 2850 7225
Wire Wire Line
2825 5225 3075 5225
Wire Wire Line
2825 4925 3075 4925
Wire Wire Line
2425 5800 3850 5800
$Comp
L Connector:Conn_01x02_Male J7
U 1 1 5E8EC5B9
P 3600 4750
F 0 "J7" H 3600 4825 50 0000 C CNN
F 1 "Termination" H 3375 4700 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 3600 4750 50 0001 C CNN
F 3 "~" H 3600 4750 50 0001 C CNN
1 3600 4750
-1 0 0 -1
$EndComp
Wire Wire Line
3275 4925 3300 4925
Wire Wire Line
3300 4925 3300 4750
Wire Wire Line
3300 4750 3400 4750
Connection ~ 3300 4925
Wire Wire Line
3300 4925 3725 4925
Wire Wire Line
3375 4975 3375 4850
Wire Wire Line
3375 4850 3400 4850
$Comp
L Connector:Conn_01x06_Male J9
U 1 1 5E9093A7
P 6775 1500
F 0 "J9" H 6747 1474 50 0000 R CNN
F 1 "Ext. I/O" H 6747 1383 50 0000 R CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical" H 6775 1500 50 0001 C CNN
F 3 "~" H 6775 1500 50 0001 C CNN
1 6775 1500
-1 0 0 -1
$EndComp
Wire Wire Line
6100 2000 6100 1400
Wire Wire Line
6100 1400 6575 1400
Wire Wire Line
6100 2100 6175 2100
Wire Wire Line
6175 2100 6175 1500
Wire Wire Line
6175 1500 6575 1500
Wire Wire Line
6100 2200 6250 2200
Wire Wire Line
6250 2200 6250 1600
Wire Wire Line
6250 1600 6575 1600
Wire Wire Line
6100 2300 6325 2300
Wire Wire Line
6325 2300 6325 1700
Wire Wire Line
6325 1700 6575 1700
Wire Wire Line
6200 2400 6200 2600
$Comp
L Device:C_Small C11
U 1 1 5E994EB8
P 6300 2400
F 0 "C11" V 6350 2200 50 0000 L CNN
F 1 "150n" V 6225 2175 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P7.50mm" H 6300 2400 50 0001 C CNN
F 3 "~" H 6300 2400 50 0001 C CNN
1 6300 2400
0 -1 -1 0
$EndComp
Wire Wire Line
7000 2500 7000 2550
Wire Wire Line
6800 2400 6800 2550
Wire Wire Line
6800 2550 7000 2550
Wire Wire Line
7225 1125 7225 2400
Wire Wire Line
6575 1300 6025 1300
Wire Wire Line
6025 1300 6025 1525
Wire Wire Line
6025 1525 5600 1525
Connection ~ 5600 1525
Wire Wire Line
5600 1525 5600 1500
$Comp
L power:GND #PWR0108
U 1 1 5E978A10
P 6575 1800
F 0 "#PWR0108" H 6575 1550 50 0001 C CNN
F 1 "GND" H 6580 1627 50 0000 C CNN
F 2 "" H 6575 1800 50 0001 C CNN
F 3 "" H 6575 1800 50 0001 C CNN
1 6575 1800
1 0 0 -1
$EndComp
$EndSCHEMATC