EESchema Schematic File Version 2
LIBS:steppers-rescue
LIBS:conn
LIBS:device
LIBS:ESD_Protection
LIBS:linear
LIBS:microcontrollers
LIBS:power
LIBS:regul
LIBS:relays
LIBS:sensors
LIBS:stm32
LIBS:texas
LIBS:transistors
LIBS:switches
LIBS:drv8825
LIBS:steppers-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L GND #PWR01
U 1 1 58C453C7
P 2750 5450
F 0 "#PWR01" H 2750 5200 50  0001 C CNN
F 1 "GND" H 2750 5300 50  0000 C CNN
F 2 "" H 2750 5450 50  0000 C CNN
F 3 "" H 2750 5450 50  0000 C CNN
	1    2750 5450
	1    0    0    -1  
$EndComp
$Comp
L CP C4
U 1 1 58C454F6
P 3150 5250
F 0 "C4" H 3175 5350 50  0000 L CNN
F 1 "47u" H 3175 5150 50  0000 L CNN
F 2 "Capacitors_Tantalum_SMD.pretty:Tantalum_Case-A_EIA-3216-18_Hand" H 3188 5100 50  0001 C CNN
F 3 "" H 3150 5250 50  0000 C CNN
	1    3150 5250
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR02
U 1 1 58C455CB
P 3350 5100
F 0 "#PWR02" H 3350 4950 50  0001 C CNN
F 1 "+3.3V" H 3350 5240 50  0000 C CNN
F 2 "" H 3350 5100 50  0000 C CNN
F 3 "" H 3350 5100 50  0000 C CNN
	1    3350 5100
	1    0    0    -1  
$EndComp
Text Notes 900  4650 0    100  ~ 0
3.3V MCU power source\nwith short-circuit protection
Wire Wire Line
	2300 5400 3150 5400
Connection ~ 3150 5100
$Comp
L GND #PWR03
U 1 1 5910CDAC
P 1400 5550
F 0 "#PWR03" H 1400 5300 50  0001 C CNN
F 1 "GND" H 1400 5400 50  0000 C CNN
F 2 "" H 1400 5550 50  0000 C CNN
F 3 "" H 1400 5550 50  0000 C CNN
	1    1400 5550
	1    0    0    -1  
$EndComp
$Comp
L Q_PMOS_GSD Q1
U 1 1 5910E2F2
P 1750 5200
F 0 "Q1" H 1950 5250 50  0000 L CNN
F 1 "AO3401" H 1950 5150 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD.pretty:SOT-23_Handsoldering" H 1950 5300 50  0001 C CNN
F 3 "" H 1750 5200 50  0000 C CNN
	1    1750 5200
	0    -1   -1   0   
$EndComp
$Comp
L D_Zener D2
U 1 1 5910F169
P 1950 5500
F 0 "D2" H 1950 5600 50  0000 C CNN
F 1 "MM3Z3V6" H 1950 5400 50  0000 C CNN
F 2 "Diodes_SMD.pretty:D_0805" H 1950 5500 50  0001 C CNN
F 3 "" H 1950 5500 50  0000 C CNN
	1    1950 5500
	-1   0    0    1   
$EndComp
$Comp
L R R5
U 1 1 591101C8
P 1600 5500
F 0 "R5" V 1680 5500 50  0000 C CNN
F 1 "2k2" V 1600 5500 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 1530 5500 50  0001 C CNN
F 3 "" H 1600 5500 50  0000 C CNN
	1    1600 5500
	0    1    1    0   
$EndComp
Text Notes 750  2350 0    100  ~ 0
Bootloader init
Text Label 1050 3400 2    60   ~ 0
NRST
Text Label 1050 2500 0    60   ~ 0
BOOT0
$Comp
L R R1
U 1 1 590D30C8
P 1050 2800
F 0 "R1" V 1130 2800 50  0000 C CNN
F 1 "10k" V 1050 2800 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 980 2800 50  0001 C CNN
F 3 "" H 1050 2800 50  0000 C CNN
	1    1050 2800
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 590D3334
P 1050 3650
F 0 "R2" V 1130 3650 50  0000 C CNN
F 1 "10k" V 1050 3650 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 980 3650 50  0001 C CNN
F 3 "" H 1050 3650 50  0000 C CNN
	1    1050 3650
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 590D4150
P 1650 2800
F 0 "C2" H 1675 2900 50  0000 L CNN
F 1 "0.1" H 1675 2700 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0603_HandSoldering" H 1688 2650 50  0001 C CNN
F 3 "" H 1650 2800 50  0000 C CNN
	1    1650 2800
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 590D4832
P 1600 3650
F 0 "C1" H 1625 3750 50  0000 L CNN
F 1 "0.1" H 1625 3550 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0603_HandSoldering" H 1638 3500 50  0001 C CNN
F 3 "" H 1600 3650 50  0000 C CNN
	1    1600 3650
	1    0    0    -1  
$EndComp
$Comp
L SW_Push SW2
U 1 1 5909F6B6
P 1350 2800
F 0 "SW2" H 1400 2900 50  0000 L CNN
F 1 "Boot" H 1350 2740 50  0000 C CNN
F 2 "Buttons_Switches_THT.pretty:SW_PUSH_6mm" H 1350 3000 50  0001 C CNN
F 3 "" H 1350 3000 50  0000 C CNN
	1    1350 2800
	0    1    1    0   
$EndComp
$Comp
L SW_Push SW1
U 1 1 590A0134
P 1300 3650
F 0 "SW1" H 1350 3750 50  0000 L CNN
F 1 "Reset" H 1300 3590 50  0000 C CNN
F 2 "Buttons_Switches_THT.pretty:SW_PUSH_6mm" H 1300 3850 50  0001 C CNN
F 3 "" H 1300 3850 50  0000 C CNN
	1    1300 3650
	0    1    1    0   
$EndComp
$Comp
L GND #PWR04
U 1 1 590A03AF
P 1050 3000
F 0 "#PWR04" H 1050 2750 50  0001 C CNN
F 1 "GND" H 1050 2850 50  0000 C CNN
F 2 "" H 1050 3000 50  0000 C CNN
F 3 "" H 1050 3000 50  0000 C CNN
	1    1050 3000
	1    0    0    -1  
$EndComp
Wire Wire Line
	1050 3000 1050 2950
Wire Wire Line
	1050 2500 1050 2650
Wire Wire Line
	1650 2600 1650 2650
Wire Wire Line
	1050 2600 1650 2600
Connection ~ 1350 2600
Connection ~ 1050 2600
Wire Wire Line
	1350 3000 1650 3000
Wire Wire Line
	1650 3000 1650 2950
$Comp
L +3.3V #PWR05
U 1 1 590A1E6C
P 1500 3050
F 0 "#PWR05" H 1500 2900 50  0001 C CNN
F 1 "+3.3V" H 1500 3190 50  0000 C CNN
F 2 "" H 1500 3050 50  0000 C CNN
F 3 "" H 1500 3050 50  0000 C CNN
	1    1500 3050
	-1   0    0    1   
$EndComp
Wire Wire Line
	1500 3050 1500 3000
Connection ~ 1500 3000
Wire Wire Line
	1050 3400 1050 3500
$Comp
L +3.3V #PWR06
U 1 1 590A465B
P 1050 3900
F 0 "#PWR06" H 1050 3750 50  0001 C CNN
F 1 "+3.3V" H 1050 4040 50  0000 C CNN
F 2 "" H 1050 3900 50  0000 C CNN
F 3 "" H 1050 3900 50  0000 C CNN
	1    1050 3900
	-1   0    0    1   
$EndComp
Wire Wire Line
	1050 3900 1050 3800
Wire Wire Line
	1050 3450 1600 3450
Connection ~ 1050 3450
Wire Wire Line
	1600 3450 1600 3500
Connection ~ 1300 3450
Wire Wire Line
	1300 3850 1600 3850
Wire Wire Line
	1600 3850 1600 3800
$Comp
L GND #PWR07
U 1 1 590A509B
P 1450 3900
F 0 "#PWR07" H 1450 3650 50  0001 C CNN
F 1 "GND" H 1450 3750 50  0000 C CNN
F 2 "" H 1450 3900 50  0000 C CNN
F 3 "" H 1450 3900 50  0000 C CNN
	1    1450 3900
	1    0    0    -1  
$EndComp
Wire Wire Line
	1450 3900 1450 3850
Connection ~ 1450 3850
Wire Notes Line
	650  2200 650  4150
Wire Notes Line
	650  4150 2000 4150
Wire Notes Line
	2000 4150 2000 2200
Wire Notes Line
	2000 2200 650  2200
$Comp
L PWR_FLAG #FLG08
U 1 1 590C1070
P 1250 5100
F 0 "#FLG08" H 1250 5195 50  0001 C CNN
F 1 "PWR_FLAG" H 1250 5280 50  0000 C CNN
F 2 "" H 1250 5100 50  0000 C CNN
F 3 "" H 1250 5100 50  0000 C CNN
	1    1250 5100
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG09
U 1 1 590C116F
P 1250 5200
F 0 "#FLG09" H 1250 5295 50  0001 C CNN
F 1 "PWR_FLAG" H 1250 5380 50  0000 C CNN
F 2 "" H 1250 5200 50  0000 C CNN
F 3 "" H 1250 5200 50  0000 C CNN
	1    1250 5200
	-1   0    0    1   
$EndComp
$Comp
L Conn_01x01 P4
U 1 1 59143415
P 1300 7050
F 0 "P4" H 1300 7150 50  0000 C CNN
F 1 "Hole" V 1400 7050 50  0000 C CNN
F 2 "my_footprints:Hole_3mm" H 1300 7050 50  0001 C CNN
F 3 "" H 1300 7050 50  0000 C CNN
	1    1300 7050
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x01 P5
U 1 1 5914456D
P 1300 7300
F 0 "P5" H 1300 7400 50  0000 C CNN
F 1 "Hole" V 1400 7300 50  0000 C CNN
F 2 "my_footprints:Hole_3mm" H 1300 7300 50  0001 C CNN
F 3 "" H 1300 7300 50  0000 C CNN
	1    1300 7300
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x01 P6
U 1 1 591446F3
P 1300 7550
F 0 "P6" H 1300 7650 50  0000 C CNN
F 1 "Hole" V 1400 7550 50  0000 C CNN
F 2 "my_footprints:Hole_3mm" H 1300 7550 50  0001 C CNN
F 3 "" H 1300 7550 50  0000 C CNN
	1    1300 7550
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x01 P1
U 1 1 591446F9
P 850 7000
F 0 "P1" H 850 7100 50  0000 C CNN
F 1 "Hole" V 950 7000 50  0000 C CNN
F 2 "my_footprints:Hole_3mm" H 850 7000 50  0001 C CNN
F 3 "" H 850 7000 50  0000 C CNN
	1    850  7000
	1    0    0    -1  
$EndComp
NoConn ~ 1100 7050
NoConn ~ 1100 7300
NoConn ~ 1100 7550
NoConn ~ 650  7000
$Comp
L LM1117-3.3 U1
U 1 1 5A15E172
P 2750 5100
F 0 "U1" H 2600 5225 50  0000 C CNN
F 1 "LM1117-3.3" H 2750 5225 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD.pretty:SOT-223" H 2750 5100 50  0001 C CNN
F 3 "" H 2750 5100 50  0001 C CNN
	1    2750 5100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2750 5450 2750 5400
Connection ~ 2750 5400
$Comp
L Conn_01x01 P2
U 1 1 5A16E72F
P 850 7300
F 0 "P2" H 850 7400 50  0000 C CNN
F 1 "Hole" V 950 7300 50  0000 C CNN
F 2 "my_footprints:Hole_3mm" H 850 7300 50  0001 C CNN
F 3 "" H 850 7300 50  0000 C CNN
	1    850  7300
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x01 P3
U 1 1 5A16E735
P 850 7550
F 0 "P3" H 850 7650 50  0000 C CNN
F 1 "Hole" V 950 7550 50  0000 C CNN
F 2 "my_footprints:Hole_3mm" H 850 7550 50  0001 C CNN
F 3 "" H 850 7550 50  0000 C CNN
	1    850  7550
	1    0    0    -1  
$EndComp
NoConn ~ 650  7300
NoConn ~ 650  7550
$Comp
L Conn_01x02 J2
U 1 1 5A170C1F
P 900 5200
F 0 "J2" H 900 5400 50  0000 C CNN
F 1 "12VIN" H 900 5000 50  0000 C CNN
F 2 "Connectors_Terminal_Blocks.pretty:TerminalBlock_Pheonix_MKDS1.5-2pol" H 900 5200 50  0001 C CNN
F 3 "" H 900 5200 50  0001 C CNN
	1    900  5200
	-1   0    0    1   
$EndComp
Wire Wire Line
	1100 5200 1450 5200
Wire Wire Line
	1100 5100 1550 5100
Connection ~ 1250 5100
Wire Wire Line
	1750 5500 1750 5400
Wire Wire Line
	1750 5500 1800 5500
Wire Wire Line
	2100 5500 2200 5500
Wire Wire Line
	2150 5500 2150 5100
Wire Wire Line
	1950 5100 2450 5100
Wire Wire Line
	1400 5550 1400 5500
Wire Wire Line
	1400 5500 1450 5500
Wire Wire Line
	1450 5500 1450 5200
Connection ~ 1250 5200
Connection ~ 1450 5500
Connection ~ 1750 5500
Text Notes 1800 5650 0    20   ~ 0
need at least 5mA
Connection ~ 2150 5100
Wire Wire Line
	3050 5100 3350 5100
$Comp
L C C3
U 1 1 5A178C32
P 2300 5250
F 0 "C3" H 2325 5350 50  0000 L CNN
F 1 "0.1" H 2325 5150 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0603_HandSoldering" H 2338 5100 50  0001 C CNN
F 3 "" H 2300 5250 50  0000 C CNN
	1    2300 5250
	1    0    0    -1  
$EndComp
Connection ~ 2300 5100
$Comp
L MAX471 U2
U 1 1 5A179DDA
P 4500 5050
F 0 "U2" H 4200 5400 50  0000 L CNN
F 1 "MAX471" H 4500 5400 50  0000 L CNN
F 2 "Housings_SOIC.pretty:SO-8_5.3x6.2mm_Pitch1.27mm" H 4500 5050 50  0001 C CNN
F 3 "" H 4500 5050 50  0001 C CNN
	1    4500 5050
	1    0    0    -1  
$EndComp
Wire Wire Line
	4000 4850 4100 4850
Wire Wire Line
	4100 4950 4050 4950
Wire Wire Line
	4050 4950 4050 4850
Connection ~ 4050 4850
Text Label 4100 5150 2    49   ~ 0
SHDN
Wire Wire Line
	4900 4850 5000 4850
Wire Wire Line
	4950 4850 4950 4950
Wire Wire Line
	4950 4950 4900 4950
Connection ~ 4950 4850
Text Label 5000 4850 0    49   ~ 0
STP12
Text Label 5350 5150 0    49   ~ 0
STPCURRENT
Wire Wire Line
	4500 5450 4500 5600
Wire Notes Line
	650  4350 650  5800
Wire Notes Line
	650  5800 3500 5800
Wire Notes Line
	3500 5800 3500 4350
Wire Notes Line
	3500 4350 650  4350
NoConn ~ 4900 5150
Text Notes 4950 5700 0    49   ~ 0
I=500uA/A
$Comp
L R R6
U 1 1 5A183304
P 4950 5450
F 0 "R6" V 5030 5450 50  0000 C CNN
F 1 "1k5" V 4950 5450 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 4880 5450 50  0001 C CNN
F 3 "" H 4950 5450 50  0000 C CNN
	1    4950 5450
	-1   0    0    1   
$EndComp
Wire Wire Line
	4950 5300 4950 5250
Connection ~ 4950 5250
$Comp
L GND #PWR010
U 1 1 5A18356D
P 4700 5600
F 0 "#PWR010" H 4700 5350 50  0001 C CNN
F 1 "GND" H 4700 5450 50  0000 C CNN
F 2 "" H 4700 5600 50  0000 C CNN
F 3 "" H 4700 5600 50  0000 C CNN
	1    4700 5600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4500 5600 5350 5600
Connection ~ 4700 5600
Text Notes 5350 5050 0    49   ~ 0
U=0.75 V/A
$Comp
L STM32F030F4Px U3
U 1 1 5A189F52
P 4600 2200
F 0 "U3" H 3000 3125 50  0000 L BNN
F 1 "STM32F030F4Px" H 6200 3125 50  0000 R BNN
F 2 "Housings_SSOP.pretty:TSSOP-20_4.4x6.5mm_Pitch0.65mm" H 6200 3075 50  0001 R TNN
F 3 "" H 4600 2200 50  0001 C CNN
	1    4600 2200
	1    0    0    -1  
$EndComp
Text Label 2900 1800 2    60   ~ 0
BOOT0
Text Label 2900 1600 2    60   ~ 0
NRST
Text Label 6300 1600 0    49   ~ 0
STPCURRENT
$Comp
L Conn_01x03 J1
U 1 1 5A18FF8B
P 800 1250
F 0 "J1" H 800 1450 50  0000 C CNN
F 1 "UART" H 800 1050 50  0000 C CNN
F 2 "Pin_Headers.pretty:Pin_Header_Straight_1x03_Pitch2.54mm" H 800 1250 50  0001 C CNN
F 3 "" H 800 1250 50  0001 C CNN
	1    800  1250
	-1   0    0    1   
$EndComp
$Comp
L SP0504BAHT D4
U 1 1 5A15ED2B
P 9250 5550
F 0 "D4" H 9550 5650 50  0000 L CNN
F 1 "SP0504BAHT" H 9550 5575 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD.pretty:SOT-23-5_HandSoldering" H 9550 5500 50  0001 L CNN
F 3 "" H 9375 5675 50  0001 C CNN
	1    9250 5550
	1    0    0    -1  
$EndComp
$Comp
L SP0502BAHT D1
U 1 1 5A15F477
P 1500 1550
F 0 "D1" H 1725 1650 50  0000 L CNN
F 1 "SP0502BAHT" H 1725 1575 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD.pretty:SOT-23" H 1725 1500 50  0001 L CNN
F 3 "" H 1625 1675 50  0001 C CNN
	1    1500 1550
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 5A161074
P 1250 1050
F 0 "R3" V 1330 1050 50  0000 C CNN
F 1 "470" V 1250 1050 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 1180 1050 50  0001 C CNN
F 3 "" H 1250 1050 50  0000 C CNN
	1    1250 1050
	0    1    1    0   
$EndComp
$Comp
L R R4
U 1 1 5A1618B4
P 1250 1250
F 0 "R4" V 1330 1250 50  0000 C CNN
F 1 "470" V 1250 1250 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 1180 1250 50  0001 C CNN
F 3 "" H 1250 1250 50  0000 C CNN
	1    1250 1250
	0    1    1    0   
$EndComp
$Comp
L GND #PWR011
U 1 1 5A162CD6
P 1000 1450
F 0 "#PWR011" H 1000 1200 50  0001 C CNN
F 1 "GND" H 1000 1300 50  0000 C CNN
F 2 "" H 1000 1450 50  0000 C CNN
F 3 "" H 1000 1450 50  0000 C CNN
	1    1000 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 1350 1000 1450
Wire Wire Line
	1100 1250 1000 1250
Wire Wire Line
	1000 1050 1000 1150
Wire Wire Line
	1000 1050 1100 1050
Wire Wire Line
	1400 1350 1400 1250
Wire Wire Line
	1400 1050 1750 1050
Wire Wire Line
	1600 1050 1600 1350
$Comp
L GND #PWR012
U 1 1 5A16363F
P 1500 1800
F 0 "#PWR012" H 1500 1550 50  0001 C CNN
F 1 "GND" H 1500 1650 50  0000 C CNN
F 2 "" H 1500 1800 50  0000 C CNN
F 3 "" H 1500 1800 50  0000 C CNN
	1    1500 1800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1500 1800 1500 1750
Text Label 6300 2400 0    60   ~ 0
USART_TX
Text Label 6300 2500 0    60   ~ 0
USART_RX
Text Label 1750 1050 0    60   ~ 0
USART_TX
Text Label 1750 1250 0    60   ~ 0
USART_RX
Wire Wire Line
	1400 1250 1750 1250
Connection ~ 1600 1050
$Comp
L Conn_02x05_Odd_Even J3
U 1 1 5A167373
P 8550 4700
F 0 "J3" H 8600 5000 50  0000 C CNN
F 1 "Motor1" H 8600 4400 50  0000 C CNN
F 2 "Connectors.pretty:IDC_Header_Straight_10pins" H 8550 4700 50  0001 C CNN
F 3 "" H 8550 4700 50  0001 C CNN
	1    8550 4700
	1    0    0    -1  
$EndComp
Text Label 8350 4500 2    60   ~ 0
M1_A
Text Label 8350 4600 2    60   ~ 0
M1_B
Text Label 8850 4500 0    60   ~ 0
M1_A*
Text Label 8850 4600 0    60   ~ 0
M1_B*
$Comp
L R R11
U 1 1 5A16B42E
P 8250 4800
F 0 "R11" V 8330 4800 50  0000 C CNN
F 1 "47" V 8250 4800 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 8180 4800 50  0001 C CNN
F 3 "" H 8250 4800 50  0000 C CNN
	1    8250 4800
	0    1    1    0   
$EndComp
NoConn ~ 8850 4700
NoConn ~ 8350 4700
$Comp
L GND #PWR013
U 1 1 5A16CBE7
P 9000 4850
F 0 "#PWR013" H 9000 4600 50  0001 C CNN
F 1 "GND" H 9000 4700 50  0000 C CNN
F 2 "" H 9000 4850 50  0000 C CNN
F 3 "" H 9000 4850 50  0000 C CNN
	1    9000 4850
	1    0    0    -1  
$EndComp
Wire Wire Line
	8850 4800 9000 4800
Wire Wire Line
	9000 4800 9000 4850
$Comp
L R R13
U 1 1 5A16D4E0
P 8850 5100
F 0 "R13" V 8930 5100 50  0000 C CNN
F 1 "220" V 8850 5100 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 8780 5100 50  0001 C CNN
F 3 "" H 8850 5100 50  0000 C CNN
	1    8850 5100
	-1   0    0    1   
$EndComp
Wire Wire Line
	8850 4950 8850 4900
$Comp
L R R12
U 1 1 5A16D65B
P 8350 5100
F 0 "R12" V 8430 5100 50  0000 C CNN
F 1 "220" V 8350 5100 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 8280 5100 50  0001 C CNN
F 3 "" H 8350 5100 50  0000 C CNN
	1    8350 5100
	-1   0    0    1   
$EndComp
Wire Wire Line
	8350 4950 8350 4900
Wire Wire Line
	8400 4800 8350 4800
$Comp
L +3.3V #PWR014
U 1 1 5A170095
P 8050 4800
F 0 "#PWR014" H 8050 4650 50  0001 C CNN
F 1 "+3.3V" H 8050 4940 50  0000 C CNN
F 2 "" H 8050 4800 50  0000 C CNN
F 3 "" H 8050 4800 50  0000 C CNN
	1    8050 4800
	1    0    0    -1  
$EndComp
Wire Wire Line
	8050 4800 8100 4800
$Comp
L Conn_02x05_Odd_Even J8
U 1 1 5A1727CF
P 9900 4700
F 0 "J8" H 9950 5000 50  0000 C CNN
F 1 "Motor2" H 9950 4400 50  0000 C CNN
F 2 "Connectors.pretty:IDC_Header_Straight_10pins" H 9900 4700 50  0001 C CNN
F 3 "" H 9900 4700 50  0001 C CNN
	1    9900 4700
	1    0    0    -1  
$EndComp
Text Label 9700 4500 2    60   ~ 0
M2_A
Text Label 9700 4600 2    60   ~ 0
M2_B
Text Label 10200 4500 0    60   ~ 0
M2_A*
Text Label 10200 4600 0    60   ~ 0
M2_B*
$Comp
L R R14
U 1 1 5A1727D9
P 9600 4800
F 0 "R14" V 9680 4800 50  0000 C CNN
F 1 "47" V 9600 4800 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 9530 4800 50  0001 C CNN
F 3 "" H 9600 4800 50  0000 C CNN
	1    9600 4800
	0    1    1    0   
$EndComp
NoConn ~ 10200 4700
NoConn ~ 9700 4700
$Comp
L GND #PWR015
U 1 1 5A1727E1
P 10350 4850
F 0 "#PWR015" H 10350 4600 50  0001 C CNN
F 1 "GND" H 10350 4700 50  0000 C CNN
F 2 "" H 10350 4850 50  0000 C CNN
F 3 "" H 10350 4850 50  0000 C CNN
	1    10350 4850
	1    0    0    -1  
$EndComp
Wire Wire Line
	10200 4800 10350 4800
Wire Wire Line
	10350 4800 10350 4850
$Comp
L R R22
U 1 1 5A1727E9
P 10200 5100
F 0 "R22" V 10280 5100 50  0000 C CNN
F 1 "220" V 10200 5100 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 10130 5100 50  0001 C CNN
F 3 "" H 10200 5100 50  0000 C CNN
	1    10200 5100
	-1   0    0    1   
$EndComp
Wire Wire Line
	10200 4950 10200 4900
$Comp
L R R15
U 1 1 5A1727F0
P 9700 5100
F 0 "R15" V 9780 5100 50  0000 C CNN
F 1 "220" V 9700 5100 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 9630 5100 50  0001 C CNN
F 3 "" H 9700 5100 50  0000 C CNN
	1    9700 5100
	-1   0    0    1   
$EndComp
Wire Wire Line
	9700 4950 9700 4900
Wire Wire Line
	9750 4800 9700 4800
$Comp
L +3.3V #PWR016
U 1 1 5A1727F8
P 9400 4800
F 0 "#PWR016" H 9400 4650 50  0001 C CNN
F 1 "+3.3V" H 9400 4940 50  0000 C CNN
F 2 "" H 9400 4800 50  0000 C CNN
F 3 "" H 9400 4800 50  0000 C CNN
	1    9400 4800
	1    0    0    -1  
$EndComp
Wire Wire Line
	9400 4800 9450 4800
$Comp
L GND #PWR017
U 1 1 5A173D79
P 9250 5800
F 0 "#PWR017" H 9250 5550 50  0001 C CNN
F 1 "GND" H 9250 5650 50  0000 C CNN
F 2 "" H 9250 5800 50  0000 C CNN
F 3 "" H 9250 5800 50  0000 C CNN
	1    9250 5800
	1    0    0    -1  
$EndComp
Wire Wire Line
	9250 5800 9250 5750
Wire Wire Line
	9150 5350 8350 5350
Wire Wire Line
	8350 5350 8350 5250
Wire Wire Line
	8800 5250 9250 5250
Wire Wire Line
	9250 5250 9250 5350
Wire Wire Line
	9350 5350 9350 5250
Wire Wire Line
	9350 5250 9750 5250
Wire Wire Line
	10200 5250 10200 5350
Wire Wire Line
	10200 5350 9450 5350
Text Label 8350 5350 2    60   ~ 0
M1ESW1
Text Label 10200 5350 0    60   ~ 0
M2ESW2
Text Label 8800 5250 2    60   ~ 0
M1ESW2
Connection ~ 8850 5250
Text Label 9750 5250 0    60   ~ 0
M2ESW1
Connection ~ 9700 5250
Text Label 6300 2100 0    60   ~ 0
M1EN
Text Label 6300 2300 0    60   ~ 0
M2EN
Text Label 6300 1800 0    60   ~ 0
M1STEP
Text Label 6300 1900 0    60   ~ 0
M2STEP
Text Label 6300 2000 0    60   ~ 0
M1DIR
Text Label 6300 2200 0    60   ~ 0
M2DIR
Text Label 6300 2600 0    60   ~ 0
M1ESW1
Text Label 6300 2700 0    60   ~ 0
M1ESW2
Text Label 2900 2400 2    60   ~ 0
M2ESW1
Text Label 2900 2500 2    60   ~ 0
M2ESW2
$Comp
L Conn_01x08 J4
U 1 1 5A1683B2
P 8850 1650
F 0 "J4" H 8850 2050 50  0000 C CNN
F 1 "DRV_left" H 8850 1150 50  0000 C CNN
F 2 "Pin_Headers.pretty:Pin_Header_Straight_1x08_Pitch2.54mm" H 8850 1650 50  0001 C CNN
F 3 "" H 8850 1650 50  0001 C CNN
	1    8850 1650
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x08 J6
U 1 1 5A1683B3
P 9300 1650
F 0 "J6" H 9300 2050 50  0000 C CNN
F 1 "DRV_right" H 9300 1150 50  0000 C CNN
F 2 "Pin_Headers.pretty:Pin_Header_Straight_1x08_Pitch2.54mm" H 9300 1650 50  0001 C CNN
F 3 "" H 9300 1650 50  0001 C CNN
	1    9300 1650
	-1   0    0    -1  
$EndComp
Wire Wire Line
	8650 1350 8550 1350
Wire Wire Line
	8550 1450 8650 1450
Wire Wire Line
	8350 1550 8650 1550
Wire Wire Line
	8350 1650 8650 1650
Wire Wire Line
	8350 1750 8650 1750
Wire Wire Line
	8350 1850 8650 1850
Wire Wire Line
	8650 1950 8550 1950
Wire Wire Line
	8150 2050 8650 2050
Wire Wire Line
	9500 2050 9600 2050
Wire Wire Line
	9500 1950 9950 1950
Wire Wire Line
	9500 1850 10050 1850
Wire Wire Line
	9500 1750 9950 1750
Wire Wire Line
	9500 1650 9600 1650
Wire Wire Line
	9500 1550 10450 1550
Wire Wire Line
	9500 1450 9900 1450
Wire Wire Line
	9500 1350 9800 1350
Text Label 9750 2200 0    60   ~ 0
M1EN
Text Label 9800 3650 0    60   ~ 0
M2EN
Text Label 9900 1400 0    60   ~ 0
M1STEP
Text Label 9950 2900 0    60   ~ 0
M2STEP
Text Label 9900 1250 0    60   ~ 0
M1DIR
Text Label 9950 2750 0    60   ~ 0
M2DIR
Text Notes 8550 1350 2    60   ~ 0
GND
Text Notes 8550 1450 2    60   ~ 0
~FAULT
Text Notes 8550 1550 2    60   ~ 0
A2
Text Notes 8550 1650 2    60   ~ 0
A1
Text Notes 8550 1750 2    60   ~ 0
B1
Text Notes 8550 1850 2    60   ~ 0
B2
Text Notes 8550 1950 2    60   ~ 0
GND
Text Notes 8550 2050 2    60   ~ 0
WMM
Text Notes 9600 1350 0    60   ~ 0
DIR
Text Notes 9600 1450 0    60   ~ 0
STEP
Text Notes 9600 1550 0    60   ~ 0
~SLEEP
Text Notes 9600 1650 0    60   ~ 0
~RESET
Text Notes 9600 1750 0    60   ~ 0
M2
Text Notes 9600 1850 0    60   ~ 0
M1
Text Notes 9600 1950 0    60   ~ 0
M0
Text Notes 9600 2050 0    60   ~ 0
~EN
$Comp
L R R16
U 1 1 5A178F27
P 10200 1700
F 0 "R16" V 10280 1700 50  0000 C CNN
F 1 "0" V 10200 1700 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 10130 1700 50  0001 C CNN
F 3 "" H 10200 1700 50  0001 C CNN
	1    10200 1700
	0    1    1    0   
$EndComp
$Comp
L R R17
U 1 1 5A17912B
P 10200 1850
F 0 "R17" V 10280 1850 50  0000 C CNN
F 1 "0" V 10200 1850 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 10130 1850 50  0001 C CNN
F 3 "" H 10200 1850 50  0001 C CNN
	1    10200 1850
	0    1    1    0   
$EndComp
$Comp
L R R18
U 1 1 5A1791EB
P 10200 2000
F 0 "R18" V 10280 2000 50  0000 C CNN
F 1 "0" V 10200 2000 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 10130 2000 50  0001 C CNN
F 3 "" H 10200 2000 50  0001 C CNN
	1    10200 2000
	0    1    1    0   
$EndComp
Wire Wire Line
	9950 1750 9950 1700
Wire Wire Line
	9950 1700 10050 1700
Wire Wire Line
	9950 1950 9950 2000
Wire Wire Line
	9950 2000 10050 2000
Wire Wire Line
	10350 1700 10350 2000
Connection ~ 10350 1850
$Comp
L +3.3V #PWR018
U 1 1 5A17A2C5
P 10450 1500
F 0 "#PWR018" H 10450 1350 50  0001 C CNN
F 1 "+3.3V" H 10450 1640 50  0000 C CNN
F 2 "" H 10450 1500 50  0000 C CNN
F 3 "" H 10450 1500 50  0000 C CNN
	1    10450 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	10450 1850 10350 1850
Text Notes 10050 1650 0    20   ~ 0
Solder only those need for\nmicrostepping desired
Wire Wire Line
	10450 1500 10450 1850
Wire Wire Line
	9600 1650 9600 1550
Connection ~ 10450 1550
Connection ~ 9600 1550
NoConn ~ 8550 1450
$Comp
L PWR_FLAG #FLG019
U 1 1 5A17FC22
P 2200 5550
F 0 "#FLG019" H 2200 5645 50  0001 C CNN
F 1 "PWR_FLAG" H 2200 5730 50  0000 C CNN
F 2 "" H 2200 5550 50  0000 C CNN
F 3 "" H 2200 5550 50  0000 C CNN
	1    2200 5550
	-1   0    0    1   
$EndComp
Wire Wire Line
	2200 5500 2200 5550
Connection ~ 2150 5500
$Comp
L +12V #PWR020
U 1 1 5A17FD59
P 2150 5100
F 0 "#PWR020" H 2150 4950 50  0001 C CNN
F 1 "+12V" H 2150 5240 50  0000 C CNN
F 2 "" H 2150 5100 50  0001 C CNN
F 3 "" H 2150 5100 50  0001 C CNN
	1    2150 5100
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR021
U 1 1 5A17FE17
P 4000 4850
F 0 "#PWR021" H 4000 4700 50  0001 C CNN
F 1 "+12V" H 4000 4990 50  0000 C CNN
F 2 "" H 4000 4850 50  0001 C CNN
F 3 "" H 4000 4850 50  0001 C CNN
	1    4000 4850
	1    0    0    -1  
$EndComp
Wire Wire Line
	8550 1950 8550 2150
$Comp
L GND #PWR022
U 1 1 5A181880
P 8550 2150
F 0 "#PWR022" H 8550 1900 50  0001 C CNN
F 1 "GND" H 8550 2000 50  0000 C CNN
F 2 "" H 8550 2150 50  0001 C CNN
F 3 "" H 8550 2150 50  0001 C CNN
	1    8550 2150
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR023
U 1 1 5A18265B
P 8550 1250
F 0 "#PWR023" H 8550 1000 50  0001 C CNN
F 1 "GND" H 8550 1100 50  0000 C CNN
F 2 "" H 8550 1250 50  0001 C CNN
F 3 "" H 8550 1250 50  0001 C CNN
	1    8550 1250
	-1   0    0    1   
$EndComp
Wire Wire Line
	8550 1350 8550 1250
Text Label 8350 1650 2    60   ~ 0
M1_A
Text Label 8350 1750 2    60   ~ 0
M1_B
Text Label 8350 1550 2    60   ~ 0
M1_A*
Text Label 8350 1850 2    60   ~ 0
M1_B*
Text Label 8350 3150 2    60   ~ 0
M2_A
Text Label 8350 3250 2    60   ~ 0
M2_B
Text Label 8350 3050 2    60   ~ 0
M2_A*
Text Label 8350 3350 2    60   ~ 0
M2_B*
Text Notes 8750 1150 0    49   ~ 0
DRV8825 module 1\n(as seen from front)
$Comp
L Conn_01x08 J5
U 1 1 5A189004
P 8850 3150
F 0 "J5" H 8850 3550 50  0000 C CNN
F 1 "DRV_left" H 8850 2650 50  0000 C CNN
F 2 "Pin_Headers.pretty:Pin_Header_Straight_1x08_Pitch2.54mm" H 8850 3150 50  0001 C CNN
F 3 "" H 8850 3150 50  0001 C CNN
	1    8850 3150
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x08 J7
U 1 1 5A18900A
P 9300 3150
F 0 "J7" H 9300 3550 50  0000 C CNN
F 1 "DRV_right" H 9300 2650 50  0000 C CNN
F 2 "Pin_Headers.pretty:Pin_Header_Straight_1x08_Pitch2.54mm" H 9300 3150 50  0001 C CNN
F 3 "" H 9300 3150 50  0001 C CNN
	1    9300 3150
	-1   0    0    -1  
$EndComp
Wire Wire Line
	8650 2850 8550 2850
Wire Wire Line
	8550 2950 8650 2950
Wire Wire Line
	8350 3050 8650 3050
Wire Wire Line
	8350 3150 8650 3150
Wire Wire Line
	8350 3250 8650 3250
Wire Wire Line
	8350 3350 8650 3350
Wire Wire Line
	8650 3450 8550 3450
Wire Wire Line
	8150 3550 8650 3550
Wire Wire Line
	9500 3550 9600 3550
Wire Wire Line
	9500 3450 9950 3450
Wire Wire Line
	9500 3350 10050 3350
Wire Wire Line
	9500 3250 9950 3250
Wire Wire Line
	9500 3150 9600 3150
Wire Wire Line
	9500 3050 10450 3050
Wire Wire Line
	9500 2950 9950 2950
Wire Wire Line
	9500 2850 9850 2850
Text Notes 8550 2850 2    60   ~ 0
GND
Text Notes 8550 2950 2    60   ~ 0
~FAULT
Text Notes 8550 3050 2    60   ~ 0
A2
Text Notes 8550 3150 2    60   ~ 0
A1
Text Notes 8550 3250 2    60   ~ 0
B1
Text Notes 8550 3350 2    60   ~ 0
B2
Text Notes 8550 3450 2    60   ~ 0
GND
Text Notes 8550 3550 2    60   ~ 0
WMM
Text Notes 9600 2850 0    60   ~ 0
DIR
Text Notes 9600 2950 0    60   ~ 0
STEP
Text Notes 9600 3050 0    60   ~ 0
~SLEEP
Text Notes 9600 3150 0    60   ~ 0
~RESET
Text Notes 9600 3250 0    60   ~ 0
M2
Text Notes 9600 3350 0    60   ~ 0
M1
Text Notes 9600 3450 0    60   ~ 0
M0
Text Notes 9600 3550 0    60   ~ 0
~EN
$Comp
L R R19
U 1 1 5A189030
P 10200 3200
F 0 "R19" V 10280 3200 50  0000 C CNN
F 1 "0" V 10200 3200 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 10130 3200 50  0001 C CNN
F 3 "" H 10200 3200 50  0001 C CNN
	1    10200 3200
	0    1    1    0   
$EndComp
$Comp
L R R20
U 1 1 5A189036
P 10200 3350
F 0 "R20" V 10280 3350 50  0000 C CNN
F 1 "0" V 10200 3350 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 10130 3350 50  0001 C CNN
F 3 "" H 10200 3350 50  0001 C CNN
	1    10200 3350
	0    1    1    0   
$EndComp
$Comp
L R R21
U 1 1 5A18903C
P 10200 3500
F 0 "R21" V 10280 3500 50  0000 C CNN
F 1 "0" V 10200 3500 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0603_HandSoldering" V 10130 3500 50  0001 C CNN
F 3 "" H 10200 3500 50  0001 C CNN
	1    10200 3500
	0    1    1    0   
$EndComp
Wire Wire Line
	9950 3250 9950 3200
Wire Wire Line
	9950 3200 10050 3200
Wire Wire Line
	9950 3450 9950 3500
Wire Wire Line
	9950 3500 10050 3500
Wire Wire Line
	10350 3200 10350 3500
Connection ~ 10350 3350
$Comp
L +3.3V #PWR024
U 1 1 5A189048
P 10450 3000
F 0 "#PWR024" H 10450 2850 50  0001 C CNN
F 1 "+3.3V" H 10450 3140 50  0000 C CNN
F 2 "" H 10450 3000 50  0000 C CNN
F 3 "" H 10450 3000 50  0000 C CNN
	1    10450 3000
	1    0    0    -1  
$EndComp
Wire Wire Line
	10450 3350 10350 3350
Text Notes 10050 3150 0    20   ~ 0
Solder only those need for\nmicrostepping desired
Wire Wire Line
	10450 3000 10450 3350
Wire Wire Line
	9600 3150 9600 3050
Connection ~ 10450 3050
Connection ~ 9600 3050
NoConn ~ 8550 2950
Wire Wire Line
	8550 3450 8550 3650
$Comp
L GND #PWR025
U 1 1 5A18905C
P 8550 3650
F 0 "#PWR025" H 8550 3400 50  0001 C CNN
F 1 "GND" H 8550 3500 50  0000 C CNN
F 2 "" H 8550 3650 50  0001 C CNN
F 3 "" H 8550 3650 50  0001 C CNN
	1    8550 3650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR026
U 1 1 5A189062
P 8550 2750
F 0 "#PWR026" H 8550 2500 50  0001 C CNN
F 1 "GND" H 8550 2600 50  0000 C CNN
F 2 "" H 8550 2750 50  0001 C CNN
F 3 "" H 8550 2750 50  0001 C CNN
	1    8550 2750
	-1   0    0    1   
$EndComp
Wire Wire Line
	8550 2850 8550 2750
Text Notes 8750 2650 0    49   ~ 0
DRV8825 module 2\n(as seen from front)
Wire Wire Line
	9750 2200 9600 2200
Wire Wire Line
	9600 2200 9600 2050
Wire Wire Line
	9900 1450 9900 1400
Wire Wire Line
	9800 1350 9800 1250
Wire Wire Line
	9800 1250 9900 1250
Wire Wire Line
	9800 3650 9600 3650
Wire Wire Line
	9600 3650 9600 3550
Wire Wire Line
	9950 2950 9950 2900
Wire Wire Line
	9850 2850 9850 2750
Wire Wire Line
	9850 2750 9950 2750
Text Label 8150 2050 2    49   ~ 0
STP12
Wire Notes Line
	7850 750  7850 3900
Wire Notes Line
	7850 3900 10600 3900
Wire Notes Line
	10600 3900 10600 750 
Wire Notes Line
	10600 750  7850 750 
Text Notes 7950 900  0    100  ~ 0
DRV8825
Text Notes 8050 4300 0    100  ~ 0
Steppers' connectors
Wire Notes Line
	7900 4150 7900 6000
Wire Notes Line
	7900 6000 10600 6000
Wire Notes Line
	10600 6000 10600 4150
Wire Notes Line
	10600 4150 7900 4150
Text Label 2900 2700 2    49   ~ 0
SHDN
$Comp
L C C6
U 1 1 5A1AB970
P 3900 950
F 0 "C6" H 3925 1050 50  0000 L CNN
F 1 "0.1" H 3925 850 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0603_HandSoldering" H 3938 800 50  0001 C CNN
F 3 "" H 3900 950 50  0000 C CNN
	1    3900 950 
	1    0    0    -1  
$EndComp
$Comp
L C C7
U 1 1 5A1ABACF
P 4200 950
F 0 "C7" H 4225 1050 50  0000 L CNN
F 1 "0.1" H 4225 850 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0603_HandSoldering" H 4238 800 50  0001 C CNN
F 3 "" H 4200 950 50  0000 C CNN
	1    4200 950 
	1    0    0    -1  
$EndComp
$Comp
L C C5
U 1 1 5A1ABB86
P 3600 950
F 0 "C5" H 3625 1050 50  0000 L CNN
F 1 "10u" H 3625 850 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_1206_HandSoldering" H 3638 800 50  0001 C CNN
F 3 "" H 3600 950 50  0000 C CNN
	1    3600 950 
	1    0    0    -1  
$EndComp
Wire Wire Line
	3600 800  4500 800 
Connection ~ 3900 800 
Wire Wire Line
	3600 1100 4200 1100
Connection ~ 3900 1100
Wire Wire Line
	4500 800  4500 1200
Connection ~ 4200 800 
Wire Wire Line
	4600 1200 4600 1150
Wire Wire Line
	4600 1150 4500 1150
Connection ~ 4500 1150
$Comp
L GND #PWR027
U 1 1 5A1B3C28
P 3900 1100
F 0 "#PWR027" H 3900 850 50  0001 C CNN
F 1 "GND" H 3900 950 50  0000 C CNN
F 2 "" H 3900 1100 50  0000 C CNN
F 3 "" H 3900 1100 50  0000 C CNN
	1    3900 1100
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR028
U 1 1 5A1B4A11
P 4600 3150
F 0 "#PWR028" H 4600 2900 50  0001 C CNN
F 1 "GND" H 4600 3000 50  0000 C CNN
F 2 "" H 4600 3150 50  0000 C CNN
F 3 "" H 4600 3150 50  0000 C CNN
	1    4600 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 3150 4600 3100
$Comp
L +3.3V #PWR029
U 1 1 5A1B5A75
P 3900 750
F 0 "#PWR029" H 3900 600 50  0001 C CNN
F 1 "+3.3V" H 3900 890 50  0000 C CNN
F 2 "" H 3900 750 50  0000 C CNN
F 3 "" H 3900 750 50  0000 C CNN
	1    3900 750 
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 750  3900 800 
Text Notes 750  850  0    100  ~ 0
UART ESD protection
Wire Notes Line
	650  700  650  2000
Wire Notes Line
	650  2000 2350 2000
Wire Notes Line
	2350 2000 2350 700 
Wire Notes Line
	2350 700  650  700 
Text Notes 3850 4550 0    59   ~ 0
Steppers' current measurement\nand power management
Wire Notes Line
	3800 4350 3800 5800
Wire Notes Line
	3800 5800 5850 5800
Wire Notes Line
	3800 4350 5850 4350
Text Notes 750  6800 0    59   ~ 0
Assembly holes
Wire Notes Line
	600  6700 600  7700
Wire Notes Line
	600  7700 1500 7700
Wire Notes Line
	1500 7700 1500 6700
Wire Notes Line
	1500 6700 600  6700
$Comp
L C C8
U 1 1 5A1CC7B7
P 5350 5400
F 0 "C8" H 5375 5500 50  0000 L CNN
F 1 "1u" H 5375 5300 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0805_HandSoldering" H 5388 5250 50  0001 C CNN
F 3 "" H 5350 5400 50  0000 C CNN
	1    5350 5400
	1    0    0    -1  
$EndComp
Connection ~ 4950 5600
$Comp
L D_Zener D3
U 1 1 5A1CFD84
P 6600 5350
F 0 "D3" H 6600 5450 50  0000 C CNN
F 1 "MM3Z3V6" H 6600 5250 50  0000 C CNN
F 2 "Diodes_SMD.pretty:D_0805" H 6600 5350 50  0001 C CNN
F 3 "" H 6600 5350 50  0000 C CNN
	1    6600 5350
	0    1    1    0   
$EndComp
$Comp
L C C9
U 1 1 5A1CDB31
P 7000 5350
F 0 "C9" H 7025 5450 50  0000 L CNN
F 1 "1u" H 7025 5250 50  0000 L CNN
F 2 "Capacitors_SMD.pretty:C_0805_HandSoldering" H 7038 5200 50  0001 C CNN
F 3 "" H 7000 5350 50  0000 C CNN
	1    7000 5350
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR030
U 1 1 5A1CB29C
P 6350 4750
F 0 "#PWR030" H 6350 4600 50  0001 C CNN
F 1 "+12V" H 6350 4890 50  0000 C CNN
F 2 "" H 6350 4750 50  0001 C CNN
F 3 "" H 6350 4750 50  0001 C CNN
	1    6350 4750
	1    0    0    -1  
$EndComp
Text Label 6300 1700 0    59   ~ 0
U12V
Text Notes 3500 3800 0    100  ~ 0
MCU address stored in flash,\nchange on first run
$Comp
L R R9
U 1 1 5A1DCD6C
P 6350 5350
F 0 "R9" V 6430 5350 50  0000 C CNN
F 1 "10k" V 6350 5350 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 6280 5350 50  0001 C CNN
F 3 "" H 6350 5350 50  0000 C CNN
	1    6350 5350
	-1   0    0    1   
$EndComp
$Comp
L R R8
U 1 1 5A1DD608
P 6350 4950
F 0 "R8" V 6430 4950 50  0000 C CNN
F 1 "47k" V 6350 4950 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 6280 4950 50  0001 C CNN
F 3 "" H 6350 4950 50  0000 C CNN
	1    6350 4950
	-1   0    0    1   
$EndComp
$Comp
L R R10
U 1 1 5A1E2C7B
P 6800 5150
F 0 "R10" V 6880 5150 50  0000 C CNN
F 1 "10k" V 6800 5150 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 6730 5150 50  0001 C CNN
F 3 "" H 6800 5150 50  0000 C CNN
	1    6800 5150
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6350 5100 6350 5200
Wire Wire Line
	6350 5150 6650 5150
Connection ~ 6350 5150
Wire Wire Line
	6600 5200 6600 5150
Connection ~ 6600 5150
Wire Wire Line
	6950 5150 7050 5150
Wire Wire Line
	7000 5150 7000 5200
Wire Wire Line
	6350 5500 6350 5550
Wire Wire Line
	6350 5550 7000 5550
Wire Wire Line
	7000 5550 7000 5500
Wire Wire Line
	6600 5500 6600 5600
Connection ~ 6600 5550
Wire Wire Line
	6350 4750 6350 4800
$Comp
L GND #PWR031
U 1 1 5A1E710E
P 6600 5600
F 0 "#PWR031" H 6600 5350 50  0001 C CNN
F 1 "GND" H 6600 5450 50  0000 C CNN
F 2 "" H 6600 5600 50  0000 C CNN
F 3 "" H 6600 5600 50  0000 C CNN
	1    6600 5600
	1    0    0    -1  
$EndComp
Connection ~ 7000 5150
Text Label 7050 5150 0    59   ~ 0
U12V
Text Notes 6200 4550 0    100  ~ 0
Steppers' voltage\nmeasurement
Text Notes 6600 5000 0    61   ~ 0
U12V = Uin / 5.7
$Comp
L R R7
U 1 1 5A1ED4E8
P 5150 5250
F 0 "R7" V 5230 5250 50  0000 C CNN
F 1 "10k" V 5150 5250 50  0000 C CNN
F 2 "Resistors_SMD.pretty:R_0805_HandSoldering" V 5080 5250 50  0001 C CNN
F 3 "" H 5150 5250 50  0000 C CNN
	1    5150 5250
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4900 5250 5000 5250
Wire Wire Line
	5300 5250 5350 5250
Wire Wire Line
	5350 5250 5350 5150
Connection ~ 5350 5250
Wire Wire Line
	5350 5600 5350 5550
Wire Notes Line
	5850 4350 5850 5800
$Comp
L CP_Small C11
U 1 1 5A1F265B
P 8300 3700
F 0 "C11" V 8400 3650 50  0000 L CNN
F 1 "100u" V 8200 3600 50  0000 L CNN
F 2 "Capacitors_THT.pretty:CP_Radial_D8.0mm_P3.50mm" H 8300 3700 50  0001 C CNN
F 3 "" H 8300 3700 50  0001 C CNN
	1    8300 3700
	0    -1   -1   0   
$EndComp
Text Label 8150 3550 2    49   ~ 0
STP12
$Comp
L CP_Small C10
U 1 1 5A1F544E
P 8300 2200
F 0 "C10" V 8400 2150 50  0000 L CNN
F 1 "100u" V 8200 2100 50  0000 L CNN
F 2 "Capacitors_THT.pretty:CP_Radial_D8.0mm_P3.50mm" H 8300 2200 50  0001 C CNN
F 3 "" H 8300 2200 50  0001 C CNN
	1    8300 2200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	8200 2200 8200 2050
Connection ~ 8200 2050
Wire Wire Line
	8400 2200 8400 2100
Wire Wire Line
	8400 2100 8550 2100
Connection ~ 8550 2100
Connection ~ 8550 3600
Wire Wire Line
	8200 3700 8200 3550
Connection ~ 8200 3550
Wire Wire Line
	8400 3700 8400 3600
Wire Wire Line
	8400 3600 8550 3600
Wire Notes Line
	6150 4250 6150 5800
Wire Notes Line
	6150 5800 7550 5800
Wire Notes Line
	7550 5800 7550 4250
Wire Notes Line
	7550 4250 6150 4250
$EndSCHEMATC