EESchema Schematic File Version 4 LIBS:center-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 MCU_ST_STM32F0:STM32F030F4Px U2 U 1 1 5C1966AA P 3300 4850 F 0 "U2" H 3600 5500 50 0000 C CNN F 1 "STM32F030F4P6" H 3800 5600 50 0000 C CNN F 2 "Housings_SSOP:TSSOP-20_4.4x6.5mm_Pitch0.65mm" H 2900 4150 50 0001 R CNN F 3 "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00088500.pdf" H 3300 4850 50 0001 C CNN 1 3300 4850 1 0 0 -1 $EndComp $Comp L Regulator_Linear:AP1117-33 U1 U 1 1 5C19682A P 7050 1650 F 0 "U1" H 7050 1892 50 0000 C CNN F 1 "AP1117-33" H 7050 1801 50 0000 C CNN F 2 "TO_SOT_Packages_SMD:SOT-223-3Lead_TabPin2" H 7050 1850 50 0001 C CNN F 3 "http://www.diodes.com/datasheets/AP1117.pdf" H 7150 1400 50 0001 C CNN 1 7050 1650 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_01x02 J1 U 1 1 5C196961 P 2500 1700 F 0 "J1" H 2650 1650 50 0000 C CNN F 1 "top left" H 2420 1466 50 0000 C CNN F 2 "footprints:led_tape_3528_2835" H 2500 1700 50 0001 C CNN F 3 "~" H 2500 1700 50 0001 C CNN 1 2500 1700 -1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_01x02 J2 U 1 1 5C196B9D P 2500 2100 F 0 "J2" H 2650 2050 50 0000 C CNN F 1 "top right" H 2420 1866 50 0000 C CNN F 2 "footprints:led_tape_3528_2835" H 2500 2100 50 0001 C CNN F 3 "~" H 2500 2100 50 0001 C CNN 1 2500 2100 -1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_01x02 J3 U 1 1 5C196C4D P 2500 2500 F 0 "J3" H 2650 2450 50 0000 C CNN F 1 "bottom right" H 2420 2266 50 0000 C CNN F 2 "footprints:led_tape_3528_2835" H 2500 2500 50 0001 C CNN F 3 "~" H 2500 2500 50 0001 C CNN 1 2500 2500 -1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_01x02 J4 U 1 1 5C196D8E P 2500 2900 F 0 "J4" H 2650 2850 50 0000 C CNN F 1 "bottom left" H 2420 2666 50 0000 C CNN F 2 "footprints:led_tape_3528_2835" H 2500 2900 50 0001 C CNN F 3 "~" H 2500 2900 50 0001 C CNN 1 2500 2900 -1 0 0 -1 $EndComp $Comp L Device:D_Schottky D1 U 1 1 5C1985B1 P 4850 1900 F 0 "D1" V 4804 1821 50 0000 R CNN F 1 "SS510" V 4895 1821 50 0000 R CNN F 2 "Diodes_SMD:D_SMB_Handsoldering" H 4850 1900 50 0001 C CNN F 3 "~" H 4850 1900 50 0001 C CNN 1 4850 1900 0 -1 1 0 $EndComp $Comp L Device:D_Schottky D3 U 1 1 5C19926C P 4850 2400 F 0 "D3" V 4804 2321 50 0000 R CNN F 1 "SS510" V 4895 2321 50 0000 R CNN F 2 "Diodes_SMD:D_SMB_Handsoldering" H 4850 2400 50 0001 C CNN F 3 "~" H 4850 2400 50 0001 C CNN 1 4850 2400 0 -1 1 0 $EndComp $Comp L Device:D_Schottky D2 U 1 1 5C199CCC P 5250 1900 F 0 "D2" V 5204 1821 50 0000 R CNN F 1 "SS510" V 5295 1821 50 0000 R CNN F 2 "Diodes_SMD:D_SMB_Handsoldering" H 5250 1900 50 0001 C CNN F 3 "~" H 5250 1900 50 0001 C CNN 1 5250 1900 0 -1 1 0 $EndComp $Comp L Device:D_Schottky D4 U 1 1 5C199DAE P 5250 2400 F 0 "D4" V 5204 2321 50 0000 R CNN F 1 "SS510" V 5295 2321 50 0000 R CNN F 2 "Diodes_SMD:D_SMB_Handsoldering" H 5250 2400 50 0001 C CNN F 3 "~" H 5250 2400 50 0001 C 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H 6242 2155 50 0000 L CNN F 2 "Capacitors_SMD:C_0603_HandSoldering" H 6150 2200 50 0001 C CNN F 3 "~" H 6150 2200 50 0001 C CNN 1 6150 2200 1 0 0 -1 $EndComp $Comp L Device:C_Small C3 U 1 1 5C1AF3BD P 6500 2200 F 0 "C3" H 6592 2246 50 0000 L CNN F 1 "100n" H 6592 2155 50 0000 L CNN F 2 "Capacitors_SMD:C_0603_HandSoldering" H 6500 2200 50 0001 C CNN F 3 "~" H 6500 2200 50 0001 C CNN 1 6500 2200 1 0 0 -1 $EndComp $Comp L Device:C_Small C5 U 1 1 5C1AFB91 P 8050 2200 F 0 "C5" H 8142 2246 50 0000 L CNN F 1 "10u" H 8142 2155 50 0000 L CNN F 2 "Capacitors_SMD:C_0603_HandSoldering" H 8050 2200 50 0001 C CNN F 3 "~" H 8050 2200 50 0001 C CNN 1 8050 2200 1 0 0 -1 $EndComp $Comp L Device:C_Small C6 U 1 1 5C1B07A6 P 8400 2200 F 0 "C6" H 8492 2246 50 0000 L CNN F 1 "100n" H 8492 2155 50 0000 L CNN F 2 "Capacitors_SMD:C_0603_HandSoldering" H 8400 2200 50 0001 C CNN F 3 "~" H 8400 2200 50 0001 C CNN 1 8400 2200 1 0 0 -1 $EndComp Wire Wire Line 8050 1650 8050 2100 Connection ~ 8050 1650 Wire Wire Line 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H 4309 2455 50 0000 L CNN F 2 "Resistors_SMD:R_0603_HandSoldering" H 4250 2500 50 0001 C CNN F 3 "~" H 4250 2500 50 0001 C CNN 1 4250 2500 1 0 0 -1 $EndComp $Comp L Device:R_Small R4 U 1 1 5C1BB077 P 4250 3100 F 0 "R4" H 4309 3146 50 0000 L CNN F 1 "3k3" H 4309 3055 50 0000 L CNN F 2 "Resistors_SMD:R_0603_HandSoldering" H 4250 3100 50 0001 C CNN F 3 "~" H 4250 3100 50 0001 C CNN 1 4250 3100 1 0 0 -1 $EndComp $Comp L Device:R_Small R3 U 1 1 5C1BC19C P 3950 3100 F 0 "R3" H 4009 3146 50 0000 L CNN F 1 "3k3" H 4009 3055 50 0000 L CNN F 2 "Resistors_SMD:R_0603_HandSoldering" H 3950 3100 50 0001 C CNN F 3 "~" H 3950 3100 50 0001 C CNN 1 3950 3100 1 0 0 -1 $EndComp Wire Wire Line 3950 3000 3950 2850 Wire Wire Line 3950 2400 3950 2100 Connection ~ 3950 2100 Wire Wire Line 3950 2100 3150 2100 Wire Wire Line 4250 2200 4250 2400 Connection ~ 4250 2200 Wire Wire Line 4250 2200 5250 2200 Wire Wire Line 4250 2600 4250 2750 Wire Wire Line 4250 3200 4250 3350 Wire Wire Line 4250 3350 3950 3350 Wire 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Line 3950 3350 3650 3350 Wire Wire Line 3650 3350 3650 3250 Connection ~ 3950 3350 Wire Wire Line 3550 2750 3950 2750 Connection ~ 3950 2750 Wire Wire Line 3950 2750 3950 2600 Wire Wire Line 4650 2750 4250 2750 Connection ~ 4250 2750 Wire Wire Line 4250 2750 4250 2850 Text Label 3550 2750 0 50 ~ 0 Vmeas_A Text Label 4650 2750 2 50 ~ 0 Vmeas_B Text Label 4200 4450 2 50 ~ 0 Vmeas_B Text Label 4200 4350 2 50 ~ 0 Vmeas_A Wire Wire Line 4200 4350 3800 4350 Wire Wire Line 3800 4450 4200 4450 $Comp L Device:R_Small R10 U 1 1 5C1F9EE6 P 5350 5050 F 0 "R10" H 5409 5096 50 0000 L CNN F 1 "620" H 5409 5005 50 0000 L CNN F 2 "Resistors_SMD:R_2512_HandSoldering" H 5350 5050 50 0001 C CNN F 3 "~" H 5350 5050 50 0001 C CNN 1 5350 5050 1 0 0 -1 $EndComp Wire Wire Line 5250 3350 5700 3350 Connection ~ 5250 3350 Connection ~ 5700 3350 $Comp L power:+3.3V #PWR0101 U 1 1 5C2174D4 P 8750 1650 F 0 "#PWR0101" H 8750 1500 50 0001 C CNN F 1 "+3.3V" V 8765 1778 50 0000 L CNN F 2 "" H 8750 1650 50 0001 C CNN F 3 "" H 8750 1650 50 0001 C CNN 1 8750 1650 0 1 1 0 $EndComp Wire Wire Line 8750 1650 8400 1650 Connection ~ 8400 1650 $Comp L power:GND #PWR0102 U 1 1 5C21CDD5 P 8750 3350 F 0 "#PWR0102" H 8750 3100 50 0001 C CNN F 1 "GND" V 8755 3222 50 0000 R CNN F 2 "" H 8750 3350 50 0001 C CNN F 3 "" H 8750 3350 50 0001 C CNN 1 8750 3350 0 -1 -1 0 $EndComp Wire Wire Line 8750 3350 8400 3350 Connection ~ 8400 3350 $Comp L power:+12V #PWR0103 U 1 1 5C2201CD P 6650 1200 F 0 "#PWR0103" H 6650 1050 50 0001 C CNN F 1 "+12V" V 6665 1328 50 0000 L CNN F 2 "" H 6650 1200 50 0001 C CNN F 3 "" H 6650 1200 50 0001 C CNN 1 6650 1200 0 1 1 0 $EndComp Wire Wire Line 6650 1200 6500 1200 Wire Wire Line 6500 1200 6500 1650 $Comp L power:+3.3V #PWR0104 U 1 1 5C223C57 P 3400 3950 F 0 "#PWR0104" H 3400 3800 50 0001 C CNN F 1 "+3.3V" H 3415 4123 50 0000 C CNN F 2 "" H 3400 3950 50 0001 C CNN F 3 "" H 3400 3950 50 0001 C CNN 1 3400 3950 1 0 0 -1 $EndComp Wire Wire Line 3400 3950 3400 4050 Connection ~ 3400 4050 $Comp L power:GND #PWR0105 U 1 1 5C22656D P 3300 5750 F 0 "#PWR0105" H 3300 5500 50 0001 C CNN F 1 "GND" H 3305 5577 50 0000 C CNN F 2 "" H 3300 5750 50 0001 C CNN F 3 "" H 3300 5750 50 0001 C CNN 1 3300 5750 1 0 0 -1 $EndComp $Comp L power:GND #PWR0106 U 1 1 5C2270D7 P 5350 5900 F 0 "#PWR0106" H 5350 5650 50 0001 C CNN F 1 "GND" H 5355 5727 50 0000 C CNN F 2 "" H 5350 5900 50 0001 C CNN F 3 "" H 5350 5900 50 0001 C CNN 1 5350 5900 1 0 0 -1 $EndComp $Comp L power:+12V #PWR0107 U 1 1 5C227D6B P 5350 4850 F 0 "#PWR0107" H 5350 4700 50 0001 C CNN F 1 "+12V" H 5365 5023 50 0000 C CNN F 2 "" H 5350 4850 50 0001 C CNN F 3 "" H 5350 4850 50 0001 C CNN 1 5350 4850 1 0 0 -1 $EndComp Wire Wire Line 5350 5650 5350 5850 Wire Wire Line 5350 5150 5350 5250 Wire Wire Line 5350 4850 5350 4950 $Comp L Device:R_Small R11 U 1 1 5C234E1F P 4750 5450 F 0 "R11" V 4554 5450 50 0000 C CNN F 1 "0" V 4645 5450 50 0000 C CNN F 2 "Resistors_SMD:R_0603_HandSoldering" H 4750 5450 50 0001 C CNN F 3 "~" H 4750 5450 50 0001 C CNN 1 4750 5450 0 1 1 0 $EndComp $Comp L Device:C_Small C12 U 1 1 5C23632F P 4950 5650 F 0 "C12" H 5042 5696 50 0000 L CNN F 1 "0" H 5042 5605 50 0000 L CNN F 2 "Capacitors_SMD:C_0805" H 4950 5650 50 0001 C CNN F 3 "~" H 4950 5650 50 0001 C CNN 1 4950 5650 1 0 0 -1 $EndComp Wire Wire Line 5350 5850 4950 5850 Wire Wire Line 4950 5850 4950 5750 Connection ~ 5350 5850 Wire Wire Line 5350 5850 5350 5900 Wire Wire Line 4950 5550 4950 5450 Wire Wire Line 4950 5450 4850 5450 Wire Wire Line 4950 5450 5050 5450 Connection ~ 4950 5450 Wire Wire Line 4400 5450 4650 5450 Text Label 4400 5450 0 50 ~ 0 LOAD $Comp L power:GND #PWR0108 U 1 1 5C24FD42 P 6950 5900 F 0 "#PWR0108" H 6950 5650 50 0001 C CNN F 1 "GND" H 6955 5727 50 0000 C CNN F 2 "" H 6950 5900 50 0001 C CNN F 3 "" H 6950 5900 50 0001 C CNN 1 6950 5900 1 0 0 -1 $EndComp Wire Wire Line 6950 5650 6950 5850 Wire Wire Line 6950 5150 6950 5250 $Comp L Device:R_Small R12 U 1 1 5C24FD4B P 6350 5450 F 0 "R12" V 6154 5450 50 0000 C CNN F 1 "0" V 6245 5450 50 0000 C CNN F 2 "Resistors_SMD:R_0603_HandSoldering" H 6350 5450 50 0001 C CNN F 3 "~" H 6350 5450 50 0001 C CNN 1 6350 5450 0 1 1 0 $EndComp $Comp L Device:C_Small C13 U 1 1 5C24FD51 P 6550 5650 F 0 "C13" H 6642 5696 50 0000 L CNN F 1 "0" H 6642 5605 50 0000 L CNN F 2 "Capacitors_SMD:C_0805" H 6550 5650 50 0001 C CNN F 3 "~" H 6550 5650 50 0001 C CNN 1 6550 5650 1 0 0 -1 $EndComp Wire Wire Line 6950 5850 6550 5850 Wire Wire Line 6550 5850 6550 5750 Connection ~ 6950 5850 Wire Wire Line 6950 5850 6950 5900 Wire Wire Line 6550 5550 6550 5450 Wire Wire Line 6550 5450 6450 5450 Wire Wire Line 6550 5450 6650 5450 Connection ~ 6550 5450 Wire Wire Line 6050 5450 6250 5450 Text Label 6050 5450 0 50 ~ 0 CH1 Text Label 7150 5150 2 50 ~ 0 Q1 Wire Wire Line 7150 5150 6950 5150 $Comp L power:GND #PWR0109 U 1 1 5C265A60 P 6950 4800 F 0 "#PWR0109" H 6950 4550 50 0001 C CNN F 1 "GND" H 6955 4627 50 0000 C CNN F 2 "" H 6950 4800 50 0001 C CNN F 3 "" H 6950 4800 50 0001 C CNN 1 6950 4800 1 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Transistor_FET:IRLML6402 Q2 U 1 1 5C26D08A P 8700 4600 F 0 "Q2" H 8905 4554 50 0000 L CNN F 1 "AO3401" H 8905 4645 50 0000 L CNN F 2 "TO_SOT_Packages_SMD:SOT-23" H 8900 4525 50 0001 L CIN F 3 "https://www.infineon.com/dgdl/irlml6402pbf.pdf?fileId=5546d462533600a401535668d5c2263c" H 8700 4600 50 0001 L CNN 1 8700 4600 1 0 0 1 $EndComp $Comp L Device:R_Small R7 U 1 1 5C270B70 P 8400 4400 F 0 "R7" H 8341 4354 50 0000 R CNN F 1 "10k" H 8341 4445 50 0000 R CNN F 2 "Resistors_SMD:R_0603_HandSoldering" H 8400 4400 50 0001 C CNN F 3 "~" H 8400 4400 50 0001 C CNN 1 8400 4400 -1 0 0 1 $EndComp $Comp L power:+12V #PWR0110 U 1 1 5C271E21 P 8800 4100 F 0 "#PWR0110" H 8800 3950 50 0001 C CNN F 1 "+12V" H 8815 4273 50 0000 C CNN F 2 "" H 8800 4100 50 0001 C CNN F 3 "" H 8800 4100 50 0001 C CNN 1 8800 4100 1 0 0 -1 $EndComp Wire Wire Line 8800 4100 8800 4200 Wire Wire Line 8800 4200 8400 4200 Wire Wire Line 8400 4200 8400 4300 Wire Wire Line 8800 4200 8800 4400 Connection ~ 8800 4200 Wire Wire Line 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