PCBLaserSchematics

EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:engineering
LIBS:Driver-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "PCB Laser Exposer - Diode Driver"
Date "2015-09-07"
Rev "1"
Comp "Io Engineering"
Comment1 "Terje"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L MCP4725 U1
U 1 1 55EDF86C
P 3000 1750
F 0 "U1" H 3200 1500 60  0000 C CNN
F 1 "MCP4725" H 3050 2000 60  0000 C CNN
F 2 "Housings_SOT-23_SOT-143_TSOT-6:SOT-23-6" H 2750 1750 60  0001 C CNN
F 3 "" H 2750 1750 60  0000 C CNN
	1    3000 1750
	-1   0    0    1   
$EndComp
$Comp
L LM358 U2
U 2 1 55EDF8E8
P 4800 2250
F 0 "U2" H 4750 2450 60  0000 L CNN
F 1 "LM358" H 4750 2000 60  0000 L CNN
F 2 "Engineering_Conn:SO-8" H 4800 2250 60  0001 C CNN
F 3 "" H 4800 2250 60  0000 C CNN
	2    4800 2250
	1    0    0    -1  
$EndComp
$Comp
L LM358 U2
U 1 1 55EDF921
P 6350 2350
F 0 "U2" H 6300 2550 60  0000 L CNN
F 1 "LM358" H 6300 2100 60  0000 L CNN
F 2 "Engineering_Conn:SO-8" H 6350 2350 60  0001 C CNN
F 3 "" H 6350 2350 60  0000 C CNN
	1    6350 2350
	1    0    0    -1  
$EndComp
$Comp
L POLOLU_A4988 U3
U 1 1 55EDFA04
P 5050 4850
F 0 "U3" H 4750 5350 60  0000 C CNN
F 1 "POLOLU_A4988" V 5050 4850 50  0000 C CNN
F 2 "Engineering_Conn:Polulu_A4988" H 5050 4850 60  0001 C CNN
F 3 "" H 5050 4850 60  0000 C CNN
	1    5050 4850
	-1   0    0    -1  
$EndComp
$Comp
L R R5
U 1 1 55EDFADB
P 5500 2250
F 0 "R5" V 5580 2250 50  0000 C CNN
F 1 "10K" V 5500 2250 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 5430 2250 30  0001 C CNN
F 3 "" H 5500 2250 30  0000 C CNN
	1    5500 2250
	0    -1   -1   0   
$EndComp
$Comp
L R R7
U 1 1 55EDFB6F
P 7100 3150
F 0 "R7" V 7180 3150 50  0000 C CNN
F 1 "8R2" V 7100 3150 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 7030 3150 30  0001 C CNN
F 3 "" H 7100 3150 30  0000 C CNN
	1    7100 3150
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 55EDFBA6
P 7300 3150
F 0 "R8" V 7380 3150 50  0000 C CNN
F 1 "8R2" V 7300 3150 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 7230 3150 30  0001 C CNN
F 3 "" H 7300 3150 30  0000 C CNN
	1    7300 3150
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 55EDFBDA
P 7100 1850
F 0 "R6" V 7180 1850 50  0000 C CNN
F 1 "R" V 7100 1850 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 7030 1850 30  0001 C CNN
F 3 "" H 7100 1850 30  0000 C CNN
	1    7100 1850
	1    0    0    -1  
$EndComp
$Comp
L R R9
U 1 1 55EDFC21
P 7500 3150
F 0 "R9" V 7580 3150 50  0000 C CNN
F 1 "1K8" V 7500 3150 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 7430 3150 30  0001 C CNN
F 3 "" H 7500 3150 30  0000 C CNN
	1    7500 3150
	1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 55EDFC6B
P 5300 3350
F 0 "R4" V 5380 3350 50  0000 C CNN
F 1 "10K" V 5300 3350 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 5230 3350 30  0001 C CNN
F 3 "" H 5300 3350 30  0000 C CNN
	1    5300 3350
	1    0    0    -1  
$EndComp
$Comp
L C C7
U 1 1 55EDFDBE
P 7300 1850
F 0 "C7" H 7325 1950 50  0000 L CNN
F 1 "100nF" H 7325 1750 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206" H 7338 1700 30  0001 C CNN
F 3 "" H 7300 1850 60  0000 C CNN
	1    7300 1850
	1    0    0    -1  
$EndComp
$Comp
L C C3
U 1 1 55EDFF2F
P 3600 2050
F 0 "C3" H 3625 2150 50  0000 L CNN
F 1 "100nF" H 3625 1950 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206" H 3638 1900 30  0001 C CNN
F 3 "" H 3600 2050 60  0000 C CNN
	1    3600 2050
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 55EDFF8D
P 2800 4400
F 0 "C1" H 2825 4500 50  0000 L CNN
F 1 "100nF" H 2825 4300 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206" H 2838 4250 30  0001 C CNN
F 3 "" H 2800 4400 60  0000 C CNN
	1    2800 4400
	1    0    0    -1  
$EndComp
$Comp
L C C4
U 1 1 55EE0070
P 5850 5450
F 0 "C4" H 5875 5550 50  0000 L CNN
F 1 "100nF" H 5875 5350 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206" H 5888 5300 30  0001 C CNN
F 3 "" H 5850 5450 60  0000 C CNN
	1    5850 5450
	1    0    0    -1  
$EndComp
$Comp
L 2N7002 Q1
U 1 1 55EE0155
P 5600 3100
F 0 "Q1" H 5600 2951 40  0000 R CNN
F 1 "2N7002" H 5600 3250 40  0000 R CNN
F 2 "Housings_SOT-23_SOT-143_TSOT-6:SOT-23" H 5470 3202 29  0001 C CNN
F 3 "" H 5600 3100 60  0000 C CNN
	1    5600 3100
	1    0    0    -1  
$EndComp
$Comp
L CP C6
U 1 1 55EE0231
P 6800 3150
F 0 "C6" H 6825 3250 50  0000 L CNN
F 1 "100uF/16V" H 6350 3050 50  0000 L CNN
F 2 "Capacitors_SMD:c_elec_5x4.5" H 6838 3000 30  0001 C CNN
F 3 "" H 6800 3150 60  0000 C CNN
	1    6800 3150
	1    0    0    -1  
$EndComp
$Comp
L CP C2
U 1 1 55EE02BC
P 3150 4400
F 0 "C2" H 3175 4500 50  0000 L CNN
F 1 "10uF/16V" H 3175 4300 50  0000 L CNN
F 2 "Capacitors_Tantalum_SMD:TantalC_SizeA_EIA-3216_HandSoldering" H 3188 4250 30  0001 C CNN
F 3 "" H 3150 4400 60  0000 C CNN
	1    3150 4400
	1    0    0    -1  
$EndComp
$Comp
L CP C5
U 1 1 55EE0324
P 6200 5450
F 0 "C5" H 6225 5550 50  0000 L CNN
F 1 "100uF/16V" H 6225 5350 50  0000 L CNN
F 2 "Capacitors_Elko_ThroughHole:Elko_vert_11.5x8mm_RM3.5_CopperClear" H 6238 5300 30  0001 C CNN
F 3 "" H 6200 5450 60  0000 C CNN
	1    6200 5450
	1    0    0    -1  
$EndComp
$Comp
L CONN_01X12 P1
U 1 1 55EE03B5
P 2500 3600
F 0 "P1" H 2500 4250 50  0000 C CNN
F 1 "CONTROLLER" V 2600 3600 50  0000 C CNN
F 2 "Engineering_Conn:MOLEX_52271-1279" H 2500 3600 60  0001 C CNN
F 3 "" H 2500 3600 60  0000 C CNN
	1    2500 3600
	-1   0    0    -1  
$EndComp
$Comp
L CONN_01X03 P2
U 1 1 55EE0494
P 3750 5300
F 0 "P2" H 3750 5500 50  0000 C CNN
F 1 "ZHOME" H 3700 5050 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x03" H 3750 5300 60  0001 C CNN
F 3 "" H 3750 5300 60  0000 C CNN
	1    3750 5300
	-1   0    0    -1  
$EndComp
$Comp
L CONN_01X02 P4
U 1 1 55EE0511
P 7800 1850
F 0 "P4" H 7800 2000 50  0000 C CNN
F 1 "LASER DIODE (SLD3235VF)" H 8400 1850 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02" H 7800 1850 60  0001 C CNN
F 3 "" H 7800 1850 60  0000 C CNN
	1    7800 1850
	1    0    0    -1  
$EndComp
$Comp
L CONN_01X04 P3
U 1 1 55EE0630
P 5950 4850
F 0 "P3" H 5950 5100 50  0000 C CNN
F 1 "ZAXIS (Focus)" V 6050 4900 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x04" H 5950 4850 60  0001 C CNN
F 3 "" H 5950 4850 60  0000 C CNN
	1    5950 4850
	1    0    0    -1  
$EndComp
$Comp
L R R1
U 1 1 55EE4D5C
P 3850 1850
F 0 "R1" V 3930 1850 50  0000 C CNN
F 1 "39K" V 3850 1850 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 3780 1850 30  0001 C CNN
F 3 "" H 3850 1850 30  0000 C CNN
	1    3850 1850
	0    -1   -1   0   
$EndComp
$Comp
L POT RV1
U 1 1 55EE4E00
P 4100 2150
F 0 "RV1" H 4100 2050 50  0000 C CNN
F 1 "5K" H 4100 2150 50  0000 C CNN
F 2 "Potentiometers:Potentiometer_Bourns_3296Y_3-8Zoll_Angular_ScrewUp" H 4100 2150 60  0001 C CNN
F 3 "" H 4100 2150 60  0000 C CNN
	1    4100 2150
	0    1    -1   0   
$EndComp
Text Label 2700 3350 0    60   ~ 0
SDA
Text Label 2700 3450 0    60   ~ 0
SCL
$Comp
L +3V3 #PWR01
U 1 1 55EE5895
P 3600 1650
F 0 "#PWR01" H 3600 1500 50  0001 C CNN
F 1 "+3V3" H 3600 1790 50  0000 C CNN
F 2 "" H 3600 1650 60  0000 C CNN
F 3 "" H 3600 1650 60  0000 C CNN
	1    3600 1650
	1    0    0    -1  
$EndComp
$Comp
L +3V3 #PWR02
U 1 1 55EE58F7
P 3100 3250
F 0 "#PWR02" H 3100 3100 50  0001 C CNN
F 1 "+3V3" V 3100 3450 50  0000 C CNN
F 2 "" H 3100 3250 60  0000 C CNN
F 3 "" H 3100 3250 60  0000 C CNN
	1    3100 3250
	0    1    1    0   
$EndComp
$Comp
L +12V #PWR03
U 1 1 55EE5959
P 3200 4050
F 0 "#PWR03" H 3200 3900 50  0001 C CNN
F 1 "+12V" V 3200 4250 50  0000 C CNN
F 2 "" H 3200 4050 60  0000 C CNN
F 3 "" H 3200 4050 60  0000 C CNN
	1    3200 4050
	0    1    1    0   
$EndComp
$Comp
L R R2
U 1 1 55EE6729
P 4250 5150
F 0 "R2" V 4330 5150 50  0000 C CNN
F 1 "4K7" V 4250 5150 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 4180 5150 30  0001 C CNN
F 3 "" H 4250 5150 30  0000 C CNN
	1    4250 5150
	-1   0    0    1   
$EndComp
Text Label 2550 1650 2    60   ~ 0
SDA
Text Label 2550 1750 2    60   ~ 0
SCL
$Comp
L +12V #PWR04
U 1 1 55EE8175
P 6300 5200
F 0 "#PWR04" H 6300 5050 50  0001 C CNN
F 1 "+12V" V 6300 5400 50  0000 C CNN
F 2 "" H 6300 5200 60  0000 C CNN
F 3 "" H 6300 5200 60  0000 C CNN
	1    6300 5200
	0    1    1    0   
$EndComp
$Comp
L GND #PWR05
U 1 1 55EE81DA
P 6200 5650
F 0 "#PWR05" H 6200 5400 50  0001 C CNN
F 1 "GND" H 6200 5500 50  0000 C CNN
F 2 "" H 6200 5650 60  0000 C CNN
F 3 "" H 6200 5650 60  0000 C CNN
	1    6200 5650
	1    0    0    -1  
$EndComp
$Comp
L +3V3 #PWR06
U 1 1 55EE886B
P 5600 4350
F 0 "#PWR06" H 5600 4200 50  0001 C CNN
F 1 "+3V3" H 5600 4490 50  0000 C CNN
F 2 "" H 5600 4350 60  0000 C CNN
F 3 "" H 5600 4350 60  0000 C CNN
	1    5600 4350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR07
U 1 1 55EE9D8B
P 7300 3650
F 0 "#PWR07" H 7300 3400 50  0001 C CNN
F 1 "GND" H 7300 3500 50  0000 C CNN
F 2 "" H 7300 3650 60  0000 C CNN
F 3 "" H 7300 3650 60  0000 C CNN
	1    7300 3650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR08
U 1 1 55EECA60
P 3450 2300
F 0 "#PWR08" H 3450 2050 50  0001 C CNN
F 1 "GND" H 3450 2150 50  0000 C CNN
F 2 "" H 3450 2300 60  0000 C CNN
F 3 "" H 3450 2300 60  0000 C CNN
	1    3450 2300
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR09
U 1 1 55EF3731
P 4700 1600
F 0 "#PWR09" H 4700 1450 50  0001 C CNN
F 1 "+12V" H 4700 1740 50  0000 C CNN
F 2 "" H 4700 1600 60  0000 C CNN
F 3 "" H 4700 1600 60  0000 C CNN
	1    4700 1600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR010
U 1 1 55EF447B
P 2800 4700
F 0 "#PWR010" H 2800 4450 50  0001 C CNN
F 1 "GND" H 2800 4550 50  0000 C CNN
F 2 "" H 2800 4700 60  0000 C CNN
F 3 "" H 2800 4700 60  0000 C CNN
	1    2800 4700
	1    0    0    -1  
$EndComp
$Comp
L BC547 Q2
U 1 1 55EF5B64
P 7200 2350
F 0 "Q2" H 7400 2425 50  0000 L CNN
F 1 "BC547" H 7400 2350 50  0000 L CNN
F 2 "Housings_TO-92:TO-92_Molded_Narrow" H 7400 2275 50  0001 L CIN
F 3 "" H 7200 2350 50  0000 L CNN
	1    7200 2350
	1    0    0    -1  
$EndComp
Text Notes 3700 6050 0    60   ~ 0
Optional laser focus control
$Comp
L +12V #PWR011
U 1 1 55EFF0AF
P 4250 4950
F 0 "#PWR011" H 4250 4800 50  0001 C CNN
F 1 "+12V" H 4250 5090 50  0000 C CNN
F 2 "" H 4250 4950 60  0000 C CNN
F 3 "" H 4250 4950 60  0000 C CNN
	1    4250 4950
	1    0    0    -1  
$EndComp
Wire Wire Line
	4300 2350 4300 2900
Wire Wire Line
	5650 2250 5850 2250
Wire Wire Line
	5850 2450 5850 2900
Wire Wire Line
	5850 2900 7300 2900
Wire Wire Line
	7100 2900 7100 3000
Wire Wire Line
	7300 2550 7300 3000
Connection ~ 7100 2900
Wire Wire Line
	5700 2250 5700 2900
Connection ~ 5700 2250
Wire Wire Line
	2700 3150 5400 3150
Wire Wire Line
	5300 3150 5300 3200
Connection ~ 5300 3150
Wire Wire Line
	7300 3300 7300 3650
Wire Wire Line
	5300 3550 5300 3500
Connection ~ 5300 3550
Wire Wire Line
	7100 3550 7100 3300
Connection ~ 7100 3550
Wire Wire Line
	2700 3850 2800 3850
Wire Wire Line
	2800 3550 2800 3950
Connection ~ 2800 3550
Wire Wire Line
	4100 3550 4100 2400
Connection ~ 4100 3550
Wire Wire Line
	4100 1850 4100 1900
Connection ~ 2800 3850
Wire Wire Line
	2700 4050 3200 4050
Wire Wire Line
	2700 3250 3100 3250
Wire Wire Line
	2700 4150 2800 4150
Wire Wire Line
	2800 4050 2800 4250
Connection ~ 2800 4050
Wire Wire Line
	4000 5300 4000 5650
Wire Wire Line
	2700 3050 4000 3050
Wire Wire Line
	4200 4500 4550 4500
Wire Wire Line
	5550 4700 5750 4700
Wire Wire Line
	5550 4800 5750 4800
Wire Wire Line
	5550 4900 5750 4900
Wire Wire Line
	5550 5000 5750 5000
Wire Wire Line
	5550 5200 6300 5200
Wire Wire Line
	6200 5200 6200 5300
Connection ~ 6200 5200
Wire Wire Line
	6200 5650 6200 5600
Wire Wire Line
	5550 4600 5600 4600
Wire Wire Line
	5600 4600 5600 4350
Wire Wire Line
	5550 5100 5600 5100
Wire Wire Line
	5600 5100 5600 5650
Wire Wire Line
	4000 5650 6200 5650
Connection ~ 6200 5650
Wire Wire Line
	4550 4700 4500 4700
Wire Wire Line
	4500 4700 4500 4800
Wire Wire Line
	4500 4800 4550 4800
Wire Wire Line
	5700 3550 5700 3300
Connection ~ 5700 3550
Connection ~ 7300 3550
Wire Wire Line
	3450 1850 3700 1850
Wire Wire Line
	4100 1850 4000 1850
Wire Wire Line
	3450 1750 3450 2300
Wire Wire Line
	2550 2250 3600 2250
Wire Wire Line
	2550 1850 2550 2250
Connection ~ 3450 2250
Wire Wire Line
	3450 1650 3600 1650
Wire Wire Line
	3600 1650 3600 1900
Wire Wire Line
	3600 2250 3600 2200
Connection ~ 3600 1650
Wire Wire Line
	7500 3550 7500 3300
Wire Wire Line
	6800 3550 6800 3300
Wire Wire Line
	2800 3950 2700 3950
Wire Wire Line
	4700 1600 4700 1850
Wire Wire Line
	2800 4550 2800 4700
Wire Wire Line
	2800 4650 3150 4650
Wire Wire Line
	3150 4650 3150 4550
Connection ~ 2800 4650
Connection ~ 2800 4150
Wire Wire Line
	3150 4250 3150 4050
Connection ~ 3150 4050
Wire Wire Line
	6250 3550 6250 2750
Connection ~ 6250 3550
Wire Wire Line
	6850 2350 7000 2350
Connection ~ 7300 2900
Wire Wire Line
	7100 2050 7600 2050
Wire Wire Line
	7600 2050 7600 1900
Wire Wire Line
	7300 2000 7300 2150
Connection ~ 7300 2050
Wire Wire Line
	4700 1650 7600 1650
Wire Wire Line
	7600 1650 7600 1800
Wire Wire Line
	7100 2050 7100 2000
Wire Wire Line
	7100 1700 7100 1650
Connection ~ 7100 1650
Wire Wire Line
	7300 1700 7300 1650
Connection ~ 7300 1650
Connection ~ 6250 1650
Wire Wire Line
	6250 1950 6250 1650
Wire Wire Line
	7500 3000 7500 2050
Connection ~ 7500 2050
Wire Wire Line
	6800 3000 6800 1650
Connection ~ 6800 1650
Wire Wire Line
	2700 3550 7500 3550
Connection ~ 6800 3550
Connection ~ 6250 2750
Wire Wire Line
	6250 2750 4700 2750
Wire Wire Line
	4700 2750 4700 2650
Wire Wire Line
	4300 3650 2700 3650
Wire Wire Line
	4200 3750 4200 4500
Wire Wire Line
	4200 3750 2700 3750
Wire Wire Line
	4550 5200 4500 5200
Wire Wire Line
	4500 5200 4500 5650
Connection ~ 5600 5650
Wire Wire Line
	5850 5200 5850 5300
Connection ~ 5850 5200
Wire Wire Line
	5850 5600 5850 5650
Connection ~ 5850 5650
Wire Wire Line
	5700 4500 5700 5650
Connection ~ 5700 5650
Wire Wire Line
	5550 4500 5700 4500
Wire Notes Line
	3650 4100 6700 4100
Wire Notes Line
	6700 4100 6700 6100
Wire Notes Line
	6700 6100 3650 6100
Wire Notes Line
	3650 6100 3650 4100
Connection ~ 4500 5650
Wire Wire Line
	4250 5000 4250 4950
Wire Wire Line
	4300 2900 5300 2900
Wire Wire Line
	4250 2150 4300 2150
Wire Wire Line
	5300 2900 5300 2250
Wire Wire Line
	5300 2250 5350 2250
Connection ~ 5300 2250
Connection ~ 4700 1650
Wire Wire Line
	4250 5300 4250 5400
Wire Wire Line
	3950 5300 4000 5300
Wire Wire Line
	3950 5200 4000 5200
Wire Wire Line
	4000 5200 4000 3050
Wire Wire Line
	4250 5400 3950 5400
Wire Wire Line
	4300 3650 4300 4600
Wire Wire Line
	4300 4600 4550 4600
$EndSCHEMATC