EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Modules-FloKra:ArduinoProMini_noAddHeaders Module1
U 1 1 5F80A727
P 5500 2950
F 0 "Module1" H 5550 4294 40  0000 C CNN
F 1 "ArduinoProMini" H 5550 4218 40  0000 C CNN
F 2 "FloKra_Modules:ArduinoProMini_V2wCrystal_allHeaders" H 5500 2950 30  0001 C CIN
F 3 "" H 5550 4233 60  0000 C CNN
	1    5500 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	4350 4750 4350 3650
Text Notes 4450 4750 0    35   ~ 0
reset from software used for firmware flashing w/o DTR line connected
$Comp
L power:GND #PWR0101
U 1 1 5F820294
P 4500 4350
F 0 "#PWR0101" H 4500 4100 50  0001 C CNN
F 1 "GND" H 4505 4177 50  0000 C CNN
F 2 "" H 4500 4350 50  0001 C CNN
F 3 "" H 4500 4350 50  0001 C CNN
	1    4500 4350
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 4150 4500 4150
Wire Wire Line
	4500 4150 4500 4350
Wire Wire Line
	4500 4150 4500 4050
Wire Wire Line
	4500 4050 4600 4050
Connection ~ 4500 4150
Wire Wire Line
	4500 4050 4500 3950
Wire Wire Line
	4500 3950 4600 3950
Connection ~ 4500 4050
Wire Wire Line
	6500 2450 6700 2450
Wire Wire Line
	6700 2450 6700 4750
$Comp
L Connector:Screw_Terminal_01x02 J1
U 1 1 5F843696
P 1300 1050
F 0 "J1" H 1218 1267 50  0000 C CNN
F 1 "Supply 9-12 VDC" H 1218 1175 50  0000 C CNN
F 2 "Connectors_Terminal_Blocks:TerminalBlock_bornier-2_P5.08mm" H 1300 1050 50  0001 C CNN
F 3 "~" H 1300 1050 50  0001 C CNN
	1    1300 1050
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR0102
U 1 1 5F844655
P 1500 1300
F 0 "#PWR0102" H 1500 1050 50  0001 C CNN
F 1 "GND" H 1505 1127 50  0000 C CNN
F 2 "" H 1500 1300 50  0001 C CNN
F 3 "" H 1500 1300 50  0001 C CNN
	1    1500 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	1500 1150 1500 1300
$Comp
L Diode:1N4001 D1
U 1 1 5F84C042
P 2250 1450
F 0 "D1" V 2296 1371 50  0000 R CNN
F 1 "1N4001" V 2205 1371 50  0000 R CNN
F 2 "Diodes_THT:D_DO-41_SOD81_P10.16mm_Horizontal" H 2250 1275 50  0001 C CNN
F 3 "http://www.vishay.com/docs/88503/1n4001.pdf" H 2250 1450 50  0001 C CNN
	1    2250 1450
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2250 1050 2250 1300
$Comp
L Device:CP C1
U 1 1 5F84E231
P 2250 1950
F 0 "C1" H 2368 1996 50  0000 L CNN
F 1 "2200u" H 2368 1905 50  0000 L CNN
F 2 "Capacitors_THT:CP_Radial_D12.5mm_P5.00mm" H 2288 1800 50  0001 C CNN
F 3 "~" H 2250 1950 50  0001 C CNN
	1    2250 1950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0103
U 1 1 5F84EA75
P 2250 2250
F 0 "#PWR0103" H 2250 2000 50  0001 C CNN
F 1 "GND" H 2255 2077 50  0000 C CNN
F 2 "" H 2250 2250 50  0001 C CNN
F 3 "" H 2250 2250 50  0001 C CNN
	1    2250 2250
	1    0    0    -1  
$EndComp
Wire Wire Line
	2250 2100 2250 2250
$Comp
L power:GND #PWR0104
U 1 1 5F853210
P 3650 1400
F 0 "#PWR0104" H 3650 1150 50  0001 C CNN
F 1 "GND" H 3655 1227 50  0000 C CNN
F 2 "" H 3650 1400 50  0001 C CNN
F 3 "" H 3650 1400 50  0001 C CNN
	1    3650 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 1400 3650 1350
$Comp
L Device:R R1
U 1 1 5F860BAB
P 3750 2300
F 0 "R1" H 3820 2346 50  0000 L CNN
F 1 "56k" H 3820 2255 50  0000 L CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical" V 3680 2300 50  0001 C CNN
F 3 "~" H 3750 2300 50  0001 C CNN
	1    3750 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R2
U 1 1 5F8629E7
P 3750 2750
F 0 "R2" H 3820 2796 50  0000 L CNN
F 1 "24k" H 3820 2705 50  0000 L CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical" V 3680 2750 50  0001 C CNN
F 3 "~" H 3750 2750 50  0001 C CNN
	1    3750 2750
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 2450 3750 2550
Wire Wire Line
	3750 2550 4000 2550
Wire Wire Line
	4000 2550 4000 4950
Connection ~ 3750 2550
Wire Wire Line
	3750 2550 3750 2600
Wire Wire Line
	4000 4950 6800 4950
$Comp
L power:GND #PWR0105
U 1 1 5F86AB14
P 3750 3000
F 0 "#PWR0105" H 3750 2750 50  0001 C CNN
F 1 "GND" H 3755 2827 50  0000 C CNN
F 2 "" H 3750 3000 50  0001 C CNN
F 3 "" H 3750 3000 50  0001 C CNN
	1    3750 3000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 3000 3750 2900
$Comp
L power:+5V #PWR0106
U 1 1 5F885BEA
P 4100 850
F 0 "#PWR0106" H 4100 700 50  0001 C CNN
F 1 "+5V" H 4115 1023 50  0000 C CNN
F 2 "" H 4100 850 50  0001 C CNN
F 3 "" H 4100 850 50  0001 C CNN
	1    4100 850 
	1    0    0    -1  
$EndComp
Wire Wire Line
	4100 850  4100 1050
Wire Wire Line
	3950 1050 4100 1050
$Comp
L Device:CP C2
U 1 1 5F88AF10
P 4100 1200
F 0 "C2" H 4218 1246 50  0000 L CNN
F 1 "47u" H 4218 1155 50  0000 L CNN
F 2 "Capacitors_THT:CP_Radial_D5.0mm_P2.50mm" H 4138 1050 50  0001 C CNN
F 3 "~" H 4100 1200 50  0001 C CNN
	1    4100 1200
	1    0    0    -1  
$EndComp
Connection ~ 4100 1050
$Comp
L power:GND #PWR0107
U 1 1 5F88BA01
P 4100 1400
F 0 "#PWR0107" H 4100 1150 50  0001 C CNN
F 1 "GND" H 4105 1227 50  0000 C CNN
F 2 "" H 4100 1400 50  0001 C CNN
F 3 "" H 4100 1400 50  0001 C CNN
	1    4100 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	4100 1350 4100 1400
Text Notes 4000 2450 0    35   ~ 0
Power Good Detection \nfor triggering save to \nEEPROM before buffered \npower supply is out
Wire Wire Line
	6800 3750 6800 4950
Wire Wire Line
	4350 3650 4600 3650
Wire Wire Line
	3750 2150 4600 2150
Wire Wire Line
	6700 4750 4350 4750
Wire Wire Line
	6800 3750 6500 3750
Wire Notes Line
	700  600  7900 600 
Wire Notes Line
	7900 600  7900 6300
Wire Notes Line
	7900 6300 6350 6300
Wire Notes Line
	6350 6300 6350 7100
Wire Notes Line
	6350 7100 700  7100
Wire Notes Line
	700  7100 700  600 
Text Notes 800  750  0    50   ~ 0
Impulse Counter Unit
Text Notes 7150 7000 0    79   ~ 0
Dual Impulse Counter \nwith EEPROM persistent storage, Power Fail detection
$Comp
L Isolator:PC817 U2
U 1 1 5F925BDD
P 2150 3400
F 0 "U2" H 2150 3725 50  0000 C CNN
F 1 "PC817" H 2150 3634 50  0000 C CNN
F 2 "Housings_DIP:DIP-4_W7.62mm" H 1950 3200 50  0001 L CIN
F 3 "http://www.soselectronic.cz/a_info/resource/d/pc817.pdf" H 2150 3400 50  0001 L CNN
	1    2150 3400
	1    0    0    -1  
$EndComp
$Comp
L Connector:Screw_Terminal_01x03 J2
U 1 1 5F92B88F
P 1100 3500
F 0 "J2" H 1018 3817 50  0000 C CNN
F 1 "IMP_IN_1" H 1018 3726 50  0000 C CNN
F 2 "Connectors_Terminal_Blocks:TerminalBlock_bornier-3_P5.08mm" H 1100 3500 50  0001 C CNN
F 3 "~" H 1100 3500 50  0001 C CNN
	1    1100 3500
	-1   0    0    1   
$EndComp
Wire Wire Line
	3750 2150 3750 1700
Connection ~ 3750 2150
$Comp
L power:GND #PWR0108
U 1 1 5F946F37
P 2450 3600
F 0 "#PWR0108" H 2450 3350 50  0001 C CNN
F 1 "GND" H 2455 3427 50  0000 C CNN
F 2 "" H 2450 3600 50  0001 C CNN
F 3 "" H 2450 3600 50  0001 C CNN
	1    2450 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	2450 3600 2450 3500
$Comp
L Device:R R3
U 1 1 5F94A6CF
P 1650 3500
F 0 "R3" V 1443 3500 50  0000 C CNN
F 1 "220" V 1534 3500 50  0000 C CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical" V 1580 3500 50  0001 C CNN
F 3 "~" H 1650 3500 50  0001 C CNN
	1    1650 3500
	0    1    1    0   
$EndComp
$Comp
L power:+5V #PWR0109
U 1 1 5F94CADA
P 1400 2600
F 0 "#PWR0109" H 1400 2450 50  0001 C CNN
F 1 "+5V" H 1415 2773 50  0000 C CNN
F 2 "" H 1400 2600 50  0001 C CNN
F 3 "" H 1400 2600 50  0001 C CNN
	1    1400 2600
	1    0    0    -1  
$EndComp
$Comp
L Regulator_Linear:L7805 U1
U 1 1 5F94F630
P 3650 1050
F 0 "U1" H 3650 1292 50  0000 C CNN
F 1 "L7805" H 3650 1201 50  0000 C CNN
F 2 "TO_SOT_Packages_THT:TO-220-3_Vertical" H 3675 900 50  0001 L CIN
F 3 "http://www.st.com/content/ccc/resource/technical/document/datasheet/41/4f/b3/b0/12/d4/47/88/CD00000444.pdf/files/CD00000444.pdf/jcr:content/translations/en.CD00000444.pdf" H 3650 1000 50  0001 C CNN
	1    3650 1050
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 3400 1400 3400
Wire Wire Line
	1300 3500 1500 3500
$Comp
L power:GND #PWR0110
U 1 1 5F963EDF
P 1300 3700
F 0 "#PWR0110" H 1300 3450 50  0001 C CNN
F 1 "GND" H 1305 3527 50  0000 C CNN
F 2 "" H 1300 3700 50  0001 C CNN
F 3 "" H 1300 3700 50  0001 C CNN
	1    1300 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 3600 1300 3700
Wire Wire Line
	1850 3500 1800 3500
Wire Wire Line
	1850 3300 1850 3200
Wire Wire Line
	2450 3300 2700 3300
$Comp
L Device:LED D3
U 1 1 5F983BBB
P 1650 2650
F 0 "D3" H 1643 2395 50  0000 C CNN
F 1 "LED" H 1643 2486 50  0000 C CNN
F 2 "LEDs:LED_D3.0mm" H 1650 2650 50  0001 C CNN
F 3 "~" H 1650 2650 50  0001 C CNN
	1    1650 2650
	-1   0    0    1   
$EndComp
Wire Wire Line
	1850 3200 1400 3200
Connection ~ 1400 3200
Wire Wire Line
	1400 3200 1400 3400
$Comp
L Device:R R4
U 1 1 5F9A2208
P 1650 3050
F 0 "R4" V 1443 3050 50  0000 C CNN
F 1 "560" V 1534 3050 50  0000 C CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical" V 1580 3050 50  0001 C CNN
F 3 "~" H 1650 3050 50  0001 C CNN
	1    1650 3050
	0    1    1    0   
$EndComp
Wire Wire Line
	1500 3050 1500 3500
Connection ~ 1500 3500
$Comp
L Isolator:PC817 U3
U 1 1 5F9B7136
P 2200 5150
F 0 "U3" H 2200 5475 50  0000 C CNN
F 1 "PC817" H 2200 5384 50  0000 C CNN
F 2 "Housings_DIP:DIP-4_W7.62mm" H 2000 4950 50  0001 L CIN
F 3 "http://www.soselectronic.cz/a_info/resource/d/pc817.pdf" H 2200 5150 50  0001 L CNN
	1    2200 5150
	1    0    0    -1  
$EndComp
$Comp
L Connector:Screw_Terminal_01x03 J3
U 1 1 5F9B713C
P 1150 5250
F 0 "J3" H 1068 5567 50  0000 C CNN
F 1 "IMP_IN_2" H 1068 5476 50  0000 C CNN
F 2 "Connectors_Terminal_Blocks:TerminalBlock_bornier-3_P5.08mm" H 1150 5250 50  0001 C CNN
F 3 "~" H 1150 5250 50  0001 C CNN
	1    1150 5250
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR0111
U 1 1 5F9B7142
P 2500 5350
F 0 "#PWR0111" H 2500 5100 50  0001 C CNN
F 1 "GND" H 2505 5177 50  0000 C CNN
F 2 "" H 2500 5350 50  0001 C CNN
F 3 "" H 2500 5350 50  0001 C CNN
	1    2500 5350
	1    0    0    -1  
$EndComp
Wire Wire Line
	2500 5350 2500 5250
$Comp
L Device:R R5
U 1 1 5F9B7149
P 1700 5250
F 0 "R5" V 1907 5250 50  0000 C CNN
F 1 "220" V 1816 5250 50  0000 C CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical" V 1630 5250 50  0001 C CNN
F 3 "~" H 1700 5250 50  0001 C CNN
	1    1700 5250
	0    1    -1   0   
$EndComp
$Comp
L power:+5V #PWR0112
U 1 1 5F9B714F
P 1450 4400
F 0 "#PWR0112" H 1450 4250 50  0001 C CNN
F 1 "+5V" H 1465 4573 50  0000 C CNN
F 2 "" H 1450 4400 50  0001 C CNN
F 3 "" H 1450 4400 50  0001 C CNN
	1    1450 4400
	1    0    0    -1  
$EndComp
Wire Wire Line
	1350 5150 1450 5150
Wire Wire Line
	1350 5250 1550 5250
$Comp
L power:GND #PWR0113
U 1 1 5F9B7157
P 1350 5450
F 0 "#PWR0113" H 1350 5200 50  0001 C CNN
F 1 "GND" H 1355 5277 50  0000 C CNN
F 2 "" H 1350 5450 50  0001 C CNN
F 3 "" H 1350 5450 50  0001 C CNN
	1    1350 5450
	1    0    0    -1  
$EndComp
Wire Wire Line
	1350 5350 1350 5450
Wire Wire Line
	1900 5250 1850 5250
Wire Wire Line
	1900 5050 1900 4950
Wire Wire Line
	2500 5050 2750 5050
$Comp
L Device:LED D4
U 1 1 5F9B7161
P 1700 4400
F 0 "D4" H 1693 4145 50  0000 C CNN
F 1 "LED" H 1693 4236 50  0000 C CNN
F 2 "LEDs:LED_D3.0mm" H 1700 4400 50  0001 C CNN
F 3 "~" H 1700 4400 50  0001 C CNN
	1    1700 4400
	-1   0    0    1   
$EndComp
Wire Wire Line
	1900 4950 1450 4950
Connection ~ 1450 4950
Wire Wire Line
	1450 4950 1450 5150
$Comp
L Device:R R6
U 1 1 5F9B716A
P 1700 4800
F 0 "R6" V 1493 4800 50  0000 C CNN
F 1 "560" V 1584 4800 50  0000 C CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical" V 1630 4800 50  0001 C CNN
F 3 "~" H 1700 4800 50  0001 C CNN
	1    1700 4800
	0    1    1    0   
$EndComp
Wire Wire Line
	1550 4800 1550 5250
Connection ~ 1550 5250
Wire Wire Line
	1550 4650 1450 4650
Connection ~ 1450 4650
Wire Wire Line
	1450 4650 1450 4950
Wire Wire Line
	1450 4400 1450 4650
Wire Wire Line
	1500 1050 2250 1050
Text Label 6550 2050 0    50   ~ 0
MCU_INT0
Wire Wire Line
	6550 2050 6500 2050
Text Label 6550 2150 0    50   ~ 0
MCU_INT1
Wire Wire Line
	6550 2150 6500 2150
Text Label 2750 5050 0    50   ~ 0
MCU_INT1
Text Label 2700 3300 0    50   ~ 0
MCU_INT0
Wire Wire Line
	1550 4400 1550 4650
Wire Wire Line
	1850 4400 1850 4800
Wire Wire Line
	1800 2650 1800 3050
Wire Wire Line
	1500 2900 1400 2900
Connection ~ 1400 2900
Wire Wire Line
	1400 2900 1400 3200
Wire Wire Line
	1500 2650 1500 2900
Wire Wire Line
	1400 2600 1400 2900
Text Label 6550 1850 0    50   ~ 0
MCU_RX
Wire Wire Line
	6550 1850 6500 1850
Text Label 6550 1950 0    50   ~ 0
MCU_TX
Wire Wire Line
	6550 1950 6500 1950
Wire Wire Line
	2250 1600 2250 1700
Wire Wire Line
	2250 1700 3750 1700
Connection ~ 2250 1700
Wire Wire Line
	2250 1700 2250 1800
$Comp
L Diode:1N4001 D2
U 1 1 5FA7B88E
P 2650 1050
F 0 "D2" V 2696 971 50  0000 R CNN
F 1 "1N4001" V 2605 971 50  0000 R CNN
F 2 "Diodes_THT:D_DO-41_SOD81_P10.16mm_Horizontal" H 2650 875 50  0001 C CNN
F 3 "http://www.vishay.com/docs/88503/1n4001.pdf" H 2650 1050 50  0001 C CNN
	1    2650 1050
	-1   0    0    1   
$EndComp
Wire Wire Line
	2500 1050 2250 1050
Connection ~ 2250 1050
Wire Wire Line
	2800 1050 3350 1050
$EndSCHEMATC