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path: root/pressure_control/schematics/pressure_control.sch
blob: 83cf47b700681841cba9209282e2298e73cf4505 (plain)
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EESchema Schematic File Version 1
LIBS:power,/home/mb/Desktop/kicad-lib/Atmega8-16PI,device,conn,linear,regul,74xx,cmos4000,adc-dac,memory,xilinx,special,microcontrollers,dsp,microchip,analog_switches,motorola,texas,intel,audio,interface,digital-audio,philips,display,cypress,siliconi,contrib,valves,./pressure_control.cache
EELAYER 23  0
EELAYER END
$Descr A4 11700 8267
Sheet 1 1
Title "AVR based pressure control"
Date "8 oct 2008"
Rev "0.1"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Connection ~ 5950 7250
Wire Wire Line
	5950 7250 7600 7250
Wire Wire Line
	7600 7250 7600 6600
Wire Wire Line
	6950 5950 7050 5950
Wire Wire Line
	7600 5950 7550 5950
Wire Wire Line
	7350 5600 7600 5600
Wire Wire Line
	7350 5600 7350 2800
Wire Wire Line
	9250 2400 6950 2400
Wire Wire Line
	750  4600 7250 4600
Wire Wire Line
	750  4600 750  4750
Wire Wire Line
	11000 5700 11000 5000
Wire Wire Line
	11000 5000 10200 5000
Wire Wire Line
	10650 4700 10450 4700
Wire Wire Line
	10450 4700 10450 4500
Wire Wire Line
	10450 4500 10200 4500
Connection ~ 10500 3900
Wire Wire Line
	10500 4000 10500 3900
Wire Wire Line
	8600 5200 8100 5200
Wire Wire Line
	8100 5200 8100 4450
Wire Wire Line
	8100 4450 4350 4450
Wire Wire Line
	4350 4450 4350 1800
Wire Wire Line
	4350 1800 4550 1800
Wire Wire Line
	4550 1900 4450 1900
Wire Wire Line
	10200 4800 10900 4800
Wire Wire Line
	10900 4800 10900 4300
Wire Wire Line
	8600 4400 8400 4400
Wire Wire Line
	8400 3900 8600 3900
Wire Wire Line
	10350 900  10400 900 
Wire Wire Line
	9350 900  8550 900 
Wire Wire Line
	8550 900  8550 1800
Wire Wire Line
	8550 1800 6950 1800
Connection ~ 7550 2600
Wire Wire Line
	7600 2600 7550 2600
Wire Wire Line
	8050 2900 8200 2900
Wire Wire Line
	6950 2100 7450 2100
Wire Wire Line
	7450 2100 7450 1100
Wire Wire Line
	7650 1100 7650 1200
Wire Wire Line
	6950 2200 7150 2200
Wire Wire Line
	7150 2200 7150 1100
Wire Wire Line
	4850 900  4950 900 
Wire Wire Line
	3500 1700 4050 1700
Wire Wire Line
	4050 1700 4050 2300
Wire Wire Line
	4050 2300 4550 2300
Wire Wire Line
	3500 3100 4050 3100
Wire Wire Line
	4050 3100 4050 2500
Wire Wire Line
	4050 2500 4550 2500
Wire Wire Line
	1150 1200 1500 1200
Wire Wire Line
	1150 2600 1500 2600
Wire Wire Line
	2100 1200 2650 1200
Wire Wire Line
	2100 2600 2650 2600
Wire Wire Line
	5550 4250 5550 4200
Wire Wire Line
	5650 950  5650 1000
Wire Wire Line
	2950 3100 3000 3100
Wire Wire Line
	2950 1700 3000 1700
Wire Wire Line
	2650 2200 2650 2100
Wire Wire Line
	2650 800  2650 700 
Connection ~ 7000 5950
Wire Wire Line
	4800 6000 4300 6000
Wire Wire Line
	4300 6000 4300 6200
Connection ~ 1400 7400
Wire Wire Line
	5950 7200 5950 7400
Wire Wire Line
	5950 6650 5900 6650
Wire Wire Line
	4300 6750 3800 6750
Wire Wire Line
	3800 6750 3800 6050
Connection ~ 5350 6650
Wire Wire Line
	5400 6650 5300 6650
Connection ~ 4050 6200
Wire Wire Line
	3800 6050 3550 6050
Connection ~ 1400 6550
Wire Wire Line
	1400 6550 2400 6550
Wire Wire Line
	2400 6550 2400 6050
Wire Wire Line
	2400 6050 2600 6050
Connection ~ 1150 7400
Wire Wire Line
	1400 7400 1400 7250
Wire Wire Line
	1150 7400 1150 6450
Wire Wire Line
	1150 5150 1150 6050
Wire Notes Line
	2650 6100 2650 5750
Wire Notes Line
	2650 6100 3500 6100
Wire Notes Line
	3500 6100 3500 5750
Wire Notes Line
	3500 5750 2650 5750
Wire Wire Line
	1800 6200 1800 6250
Wire Wire Line
	1800 5350 1800 5400
Wire Wire Line
	6350 6350 6350 6400
Wire Wire Line
	4700 6200 4700 6250
Wire Wire Line
	4700 4800 4700 4850
Wire Wire Line
	6350 5500 6350 5550
Wire Wire Line
	4700 5650 4700 5700
Wire Wire Line
	4700 7050 4700 7100
Wire Wire Line
	2400 5800 2600 5800
Connection ~ 1150 5700
Wire Wire Line
	1400 5700 1150 5700
Wire Wire Line
	1400 6750 1400 5900
Wire Wire Line
	3550 5800 3800 5800
Wire Wire Line
	3800 5800 3800 5150
Wire Wire Line
	3800 5150 4300 5150
Wire Wire Line
	4050 5650 4050 5350
Wire Wire Line
	4050 5350 4300 5350
Wire Wire Line
	4800 5800 4300 5800
Wire Wire Line
	4300 5800 4300 5600
Wire Wire Line
	4300 5600 4050 5600
Connection ~ 4050 5600
Wire Wire Line
	5300 5800 5350 5800
Wire Wire Line
	5350 5800 5350 5250
Wire Wire Line
	5400 5250 5300 5250
Connection ~ 5350 5250
Wire Wire Line
	6400 5250 5900 5250
Wire Wire Line
	4050 6150 4050 6550
Wire Wire Line
	4050 6550 4300 6550
Wire Wire Line
	5950 5250 5950 5850
Connection ~ 5950 5250
Wire Wire Line
	5950 6700 5950 6050
Connection ~ 5950 6650
Wire Wire Line
	3450 7550 3450 7400
Connection ~ 3450 7400
Wire Wire Line
	5300 6000 5350 6000
Wire Wire Line
	5350 6000 5350 6650
Wire Wire Line
	6900 5250 7000 5250
Wire Wire Line
	7000 5250 7000 5950
Wire Wire Line
	3900 5900 3900 6200
Wire Wire Line
	3900 6200 4300 6200
Wire Wire Line
	2650 1500 2650 1400
Wire Wire Line
	2650 2900 2650 2800
Wire Wire Line
	2950 1000 3000 1000
Wire Wire Line
	2950 2400 3000 2400
Wire Wire Line
	6050 950  6050 1000
Wire Wire Line
	5950 4200 5950 4250
Wire Wire Line
	2100 3300 2650 3300
Wire Wire Line
	2100 1900 2650 1900
Wire Wire Line
	1150 3300 1500 3300
Wire Wire Line
	1150 1900 1500 1900
Wire Wire Line
	6950 2900 7250 2900
Wire Wire Line
	7350 2800 6950 2800
Wire Wire Line
	3500 2400 4550 2400
Wire Wire Line
	3500 1000 4150 1000
Wire Wire Line
	4150 1000 4150 2200
Wire Wire Line
	4150 2200 4550 2200
Wire Wire Line
	5350 900  5450 900 
Wire Wire Line
	5450 900  5450 1000
Wire Wire Line
	7250 1200 7250 1100
Wire Wire Line
	7350 1100 7350 2300
Wire Wire Line
	7350 2300 6950 2300
Wire Wire Line
	7550 1100 7550 3400
Wire Wire Line
	7550 3400 6950 3400
Wire Wire Line
	8150 2600 8100 2600
Wire Wire Line
	7550 2900 7650 2900
Connection ~ 7550 2900
Wire Wire Line
	6950 1900 8650 1900
Wire Wire Line
	8650 1900 8650 1300
Wire Wire Line
	8650 1300 9350 1300
Wire Wire Line
	10350 1300 10400 1300
Wire Wire Line
	10200 4300 10650 4300
Wire Wire Line
	8400 4300 8600 4300
Wire Wire Line
	8400 4800 8600 4800
Wire Wire Line
	10900 3900 10200 3900
Wire Wire Line
	7250 2900 7250 4600
Wire Wire Line
	4450 1900 4450 4350
Wire Wire Line
	4450 4350 8200 4350
Wire Wire Line
	8200 4350 8200 5000
Wire Wire Line
	8200 5000 8600 5000
Connection ~ 1150 4600
Wire Wire Line
	1150 4650 1150 4600
Wire Wire Line
	10300 4500 10300 4600
Connection ~ 10300 4500
Wire Wire Line
	10700 5700 10700 5550
Wire Wire Line
	10200 5200 10900 5200
Wire Wire Line
	10900 5200 10900 5700
Wire Wire Line
	750  5150 750  7400
Wire Wire Line
	750  7400 5950 7400
Wire Wire Line
	7600 5600 7600 6200
Connection ~ 7600 5950
$Comp
L ZENER D2
U 1 1 48ED3996
P 7600 6400
F 0 "D2" H 7600 6500 50  0000 C C
F 1 "4.7V" H 7600 6300 40  0000 C C
	1    7600 6400
	0    -1   -1   0   
$EndComp
$Comp
L R R14
U 1 1 48ED397A
P 7300 5950
F 0 "R14" V 7380 5950 50  0000 C C
F 1 "10k" V 7300 5950 50  0000 C C
	1    7300 5950
	0    1    1    0   
$EndComp
NoConn ~ 8600 5300
NoConn ~ 8600 5100
NoConn ~ 10200 5300
NoConn ~ 10200 5100
NoConn ~ 11100 5700
NoConn ~ 10800 5700
NoConn ~ 10600 5700
NoConn ~ 10500 5700
NoConn ~ 10400 5700
NoConn ~ 10300 5700
$Comp
L GND #PWR31
U 1 1 48EC97E3
P 10700 5550
F 0 "#PWR31" H 10700 5550 30  0001 C C
F 1 "GND" H 10700 5480 30  0001 C C
	1    10700 5550
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR27
U 1 1 48EC97C8
P 10300 4600
F 0 "#PWR27" H 10300 4600 30  0001 C C
F 1 "GND" H 10300 4530 30  0001 C C
	1    10300 4600
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR30
U 1 1 48EC97A6
P 10500 4000
F 0 "#PWR30" H 10500 4090 20  0001 C C
F 1 "+5V" H 10500 4090 30  0000 C C
	1    10500 4000
	-1   0    0    1   
$EndComp
$Comp
L CONN_9 P6
U 1 1 48EC976F
P 10700 6050
F 0 "P6" V 10650 6050 60  0000 C C
F 1 "RS232 serial" V 10750 6050 60  0000 C C
	1    10700 6050
	0    1    1    0   
$EndComp
Text Notes 9500 650  0    60   ~
Quick control
Text Notes 8950 5750 0    60   ~
Control interface
NoConn ~ 4550 2000
$Comp
L C C7
U 1 1 48EC9158
P 10900 4100
F 0 "C7" H 10950 4200 50  0000 L C
F 1 "1uF" H 10950 4000 50  0000 L C
	1    10900 4100
	1    0    0    -1  
$EndComp
$Comp
L C C6
U 1 1 48EC9140
P 10650 4500
F 0 "C6" H 10700 4600 50  0000 L C
F 1 "1uF" H 10700 4400 50  0000 L C
	1    10650 4500
	1    0    0    -1  
$EndComp
$Comp
L C C5
U 1 1 48EC913A
P 8400 4600
F 0 "C5" H 8450 4700 50  0000 L C
F 1 "1uF" H 8450 4500 50  0000 L C
	1    8400 4600
	1    0    0    -1  
$EndComp
$Comp
L C C4
U 1 1 48EC912F
P 8400 4100
F 0 "C4" H 8450 4200 50  0000 L C
F 1 "1uF" H 8450 4000 50  0000 L C
	1    8400 4100
	1    0    0    -1  
$EndComp
$Comp
L MAX232 U3
U 1 1 48EC9022
P 9400 4600
F 0 "U3" H 9400 5450 70  0000 C C
F 1 "MAX232" H 9400 3750 70  0000 C C
	1    9400 4600
	1    0    0    -1  
$EndComp
NoConn ~ 6950 2000
NoConn ~ 6950 2500
NoConn ~ 6950 3000
NoConn ~ 6950 3100
NoConn ~ 6950 3200
NoConn ~ 6950 3300
NoConn ~ 4550 3100
NoConn ~ 4550 3000
NoConn ~ 4550 2100
NoConn ~ 9850 2400
$Comp
L CRYSTAL X1
U 1 1 48EBE465
P 9550 2400
F 0 "X1" H 9550 2550 60  0000 C C
F 1 "16Mhz clock source" H 9550 2250 60  0000 C C
	1    9550 2400
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR29
U 1 1 48EBE347
P 10400 1300
F 0 "#PWR29" H 10400 1300 30  0001 C C
F 1 "GND" H 10400 1230 30  0001 C C
	1    10400 1300
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR28
U 1 1 48EBE340
P 10400 900
F 0 "#PWR28" H 10400 900 30  0001 C C
F 1 "GND" H 10400 830 30  0001 C C
	1    10400 900 
	0    -1   -1   0   
$EndComp
$Comp
L SPST SW2
U 1 1 48EBE316
P 9850 1300
F 0 "SW2" H 9850 1400 70  0000 C C
F 1 "Pressure DOWN" H 9850 1200 70  0000 C C
	1    9850 1300
	1    0    0    -1  
$EndComp
$Comp
L SPST SW1
U 1 1 48EBE309
P 9850 900
F 0 "SW1" H 9850 1000 70  0000 C C
F 1 "Pressure UP" H 9850 800 70  0000 C C
	1    9850 900 
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR26
U 1 1 48EB4074
P 8200 2900
F 0 "#PWR26" H 8200 2900 30  0001 C C
F 1 "GND" H 8200 2830 30  0001 C C
	1    8200 2900
	0    -1   -1   0   
$EndComp
$Comp
L C C3
U 1 1 48EB4067
P 7850 2900
F 0 "C3" H 7900 3000 50  0000 L C
F 1 "47p" H 7900 2800 50  0000 L C
	1    7850 2900
	0    1    1    0   
$EndComp
$Comp
L +5V #PWR23
U 1 1 48EB400B
P 7250 1200
F 0 "#PWR23" H 7250 1290 20  0001 C C
F 1 "+5V" H 7250 1290 30  0000 C C
	1    7250 1200
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR24
U 1 1 48EB3FFE
P 7650 1200
F 0 "#PWR24" H 7650 1200 30  0001 C C
F 1 "GND" H 7650 1130 30  0001 C C
	1    7650 1200
	1    0    0    -1  
$EndComp
$Comp
L CONN_6 P5
U 1 1 48EB3FC9
P 7400 750
F 0 "P5" V 7350 750 60  0000 C C
F 1 "ISP" V 7450 750 60  0000 C C
	1    7400 750 
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR16
U 1 1 48EB3F38
P 4850 900
F 0 "#PWR16" H 4850 900 30  0001 C C
F 1 "GND" H 4850 830 30  0001 C C
	1    4850 900 
	0    1    1    0   
$EndComp
$Comp
L C C2
U 1 1 48EB3F22
P 5150 900
F 0 "C2" H 5200 1000 50  0000 L C
F 1 "47p" H 5200 800 50  0000 L C
	1    5150 900 
	0    1    1    0   
$EndComp
Text Notes 600  800  0    60   ~
Inlet/outlet valve control
$Comp
L +24V #PWR4
U 1 1 48EB372C
P 1150 3300
F 0 "#PWR4" H 1150 3250 20  0001 C C
F 1 "+24V" H 1150 3400 30  0000 C C
	1    1150 3300
	0    -1   -1   0   
$EndComp
$Comp
L +24V #PWR3
U 1 1 48EB3726
P 1150 2600
F 0 "#PWR3" H 1150 2550 20  0001 C C
F 1 "+24V" H 1150 2700 30  0000 C C
	1    1150 2600
	0    -1   -1   0   
$EndComp
$Comp
L +24V #PWR2
U 1 1 48EB371D
P 1150 1900
F 0 "#PWR2" H 1150 1850 20  0001 C C
F 1 "+24V" H 1150 2000 30  0000 C C
	1    1150 1900
	0    -1   -1   0   
$EndComp
$Comp
L +24V #PWR1
U 1 1 48EB3717
P 1150 1200
F 0 "#PWR1" H 1150 1150 20  0001 C C
F 1 "+24V" H 1150 1300 30  0000 C C
	1    1150 1200
	0    -1   -1   0   
$EndComp
$Comp
L INDUCTOR L2
U 1 1 48EB3674
P 1800 1900
F 0 "L2" V 1750 1900 40  0000 C C
F 1 "Valve coil, 270 Ohms" V 1900 1900 40  0000 C C
	1    1800 1900
	0    1    1    0   
$EndComp
$Comp
L INDUCTOR L3
U 1 1 48EB3670
P 1800 2600
F 0 "L3" V 1750 2600 40  0000 C C
F 1 "Valve coil, 270 Ohms" V 1900 2600 40  0000 C C
	1    1800 2600
	0    1    1    0   
$EndComp
$Comp
L INDUCTOR L4
U 1 1 48EB366C
P 1800 3300
F 0 "L4" V 1750 3300 40  0000 C C
F 1 "Valve coil, 270 Ohms" V 1900 3300 40  0000 C C
	1    1800 3300
	0    1    1    0   
$EndComp
$Comp
L INDUCTOR L1
U 1 1 48EB3663
P 1800 1200
F 0 "L1" V 1750 1200 40  0000 C C
F 1 "Valve coil, 270 Ohms" V 1900 1200 40  0000 C C
	1    1800 1200
	0    1    1    0   
$EndComp
$Comp
L +5V #PWR25
U 1 1 48EB35DA
P 8150 2600
F 0 "#PWR25" H 8150 2690 20  0001 C C
F 1 "+5V" H 8150 2690 30  0000 C C
	1    8150 2600
	0    1    1    0   
$EndComp
$Comp
L R R13
U 1 1 48EB35CD
P 7850 2600
F 0 "R13" V 7930 2600 50  0000 C C
F 1 "10k" V 7850 2600 50  0000 C C
	1    7850 2600
	0    1    1    0   
$EndComp
$Comp
L GND #PWR19
U 1 1 48EB35A8
P 5950 4250
F 0 "#PWR19" H 5950 4250 30  0001 C C
F 1 "GND" H 5950 4180 30  0001 C C
	1    5950 4250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR17
U 1 1 48EB35A4
P 5550 4250
F 0 "#PWR17" H 5550 4250 30  0001 C C
F 1 "GND" H 5550 4180 30  0001 C C
	1    5550 4250
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR20
U 1 1 48EB3592
P 6050 950
F 0 "#PWR20" H 6050 1040 20  0001 C C
F 1 "+5V" H 6050 1040 30  0000 C C
	1    6050 950 
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR18
U 1 1 48EB3587
P 5650 950
F 0 "#PWR18" H 5650 1040 20  0001 C C
F 1 "+5V" H 5650 1040 30  0000 C C
	1    5650 950 
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 48EB33AC
P 3250 3100
F 0 "R6" V 3330 3100 50  0000 C C
F 1 "1.5k" V 3250 3100 50  0000 C C
	1    3250 3100
	0    1    1    0   
$EndComp
$Comp
L R R3
U 1 1 48EB33A5
P 3250 1000
F 0 "R3" V 3330 1000 50  0000 C C
F 1 "1.5k" V 3250 1000 50  0000 C C
	1    3250 1000
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 48EB339D
P 3250 2400
F 0 "R5" V 3330 2400 50  0000 C C
F 1 "1.5k" V 3250 2400 50  0000 C C
	1    3250 2400
	0    1    1    0   
$EndComp
$Comp
L R R4
U 1 1 48EB338E
P 3250 1700
F 0 "R4" V 3330 1700 50  0000 C C
F 1 "1.5k" V 3250 1700 50  0000 C C
	1    3250 1700
	0    1    1    0   
$EndComp
$Comp
L GND #PWR7
U 1 1 48EB336B
P 2650 700
F 0 "#PWR7" H 2650 700 30  0001 C C
F 1 "GND" H 2650 630 30  0001 C C
	1    2650 700 
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR8
U 1 1 48EB3367
P 2650 1400
F 0 "#PWR8" H 2650 1400 30  0001 C C
F 1 "GND" H 2650 1330 30  0001 C C
	1    2650 1400
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR10
U 1 1 48EB335F
P 2650 2800
F 0 "#PWR10" H 2650 2800 30  0001 C C
F 1 "GND" H 2650 2730 30  0001 C C
	1    2650 2800
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR9
U 1 1 48EB3357
P 2650 2100
F 0 "#PWR9" H 2650 2100 30  0001 C C
F 1 "GND" H 2650 2030 30  0001 C C
	1    2650 2100
	-1   0    0    1   
$EndComp
$Comp
L NPN Q4
U 1 1 48EB32CD
P 2750 3100
F 0 "Q4" H 2900 3100 50  0000 C C
F 1 "BD139" H 2652 3250 50  0000 C C
	1    2750 3100
	-1   0    0    1   
$EndComp
$Comp
L NPN Q1
U 1 1 48EB32C9
P 2750 1000
F 0 "Q1" H 2900 1000 50  0000 C C
F 1 "BD139" H 2652 1150 50  0000 C C
	1    2750 1000
	-1   0    0    1   
$EndComp
$Comp
L NPN Q3
U 1 1 48EA892D
P 2750 2400
F 0 "Q3" H 2900 2400 50  0000 C C
F 1 "BD139" H 2652 2550 50  0000 C C
	1    2750 2400
	-1   0    0    1   
$EndComp
$Comp
L NPN Q2
U 1 1 48EA8926
P 2750 1700
F 0 "Q2" H 2900 1700 50  0000 C C
F 1 "BD139" H 2652 1850 50  0000 C C
	1    2750 1700
	-1   0    0    1   
$EndComp
Text Notes 2600 7150 0    60   ~
Sensor amplifier
$Comp
L POT RV1
U 1 1 48EA86D8
P 4050 5900
F 0 "RV1" H 4050 5800 50  0000 C C
F 1 "100k" H 4050 5900 50  0000 C C
	1    4050 5900
	0    -1   -1   0   
$EndComp
$Comp
L R R2
U 1 1 48E7F221
P 1400 7000
F 0 "R2" V 1480 7000 50  0000 C C
F 1 "4.7k" V 1400 7000 50  0000 C C
	1    1400 7000
	1    0    0    -1  
$EndComp
Text Label 1500 4600 0    60   ~
Sensor amplifier enable
$Comp
L GND #PWR11
U 1 1 48E7F3CF
P 3450 7550
F 0 "#PWR11" H 3450 7550 30  0001 C C
F 1 "GND" H 3450 7480 30  0001 C C
	1    3450 7550
	1    0    0    -1  
$EndComp
$Comp
L R R11
U 1 1 48E7F3B1
P 5950 6950
F 0 "R11" V 6030 6950 50  0000 C C
F 1 "500k" V 5950 6950 50  0000 C C
	1    5950 6950
	1    0    0    -1  
$EndComp
$Comp
L R R12
U 1 1 48E7F33D
P 6650 5250
F 0 "R12" V 6730 5250 50  0000 C C
F 1 "500k" V 6650 5250 50  0000 C C
	1    6650 5250
	0    1    1    0   
$EndComp
$Comp
L R R10
U 1 1 48E7F311
P 5650 6650
F 0 "R10" V 5730 6650 50  0000 C C
F 1 "200k" V 5650 6650 50  0000 C C
	1    5650 6650
	0    1    1    0   
$EndComp
$Comp
L R R9
U 1 1 48E7F30C
P 5650 5250
F 0 "R9" V 5730 5250 50  0000 C C
F 1 "200k" V 5650 5250 50  0000 C C
	1    5650 5250
	0    1    1    0   
$EndComp
$Comp
L R R8
U 1 1 48E7F2BB
P 5050 6000
F 0 "R8" V 5130 6000 50  0000 C C
F 1 "100k" V 5050 6000 50  0000 C C
	1    5050 6000
	0    1    1    0   
$EndComp
$Comp
L R R7
U 1 1 48E7F2B3
P 5050 5800
F 0 "R7" V 5130 5800 50  0000 C C
F 1 "100k" V 5050 5800 50  0000 C C
	1    5050 5800
	0    1    1    0   
$EndComp
$Comp
L ZENER D1
U 1 1 48E7F1B0
P 1150 6250
F 0 "D1" H 1150 6350 50  0000 C C
F 1 "4.3V" H 1150 6150 40  0000 C C
	1    1150 6250
	0    -1   -1   0   
$EndComp
$Comp
L R R1
U 1 1 48E7F17A
P 1150 4900
F 0 "R1" V 1230 4900 50  0000 C C
F 1 "10k" V 1150 4900 50  0000 C C
	1    1150 4900
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 48E7F16B
P 750 4950
F 0 "C1" H 800 5050 50  0000 L C
F 1 "0.1uF" H 800 4850 50  0000 L C
	1    750  4950
	1    0    0    -1  
$EndComp
Text Notes 2600 6250 0    60   ~
IN-
Text Notes 3400 5700 0    60   ~
OUT-
Text Notes 3400 6250 0    60   ~
OUT+
Text Notes 2600 5700 0    60   ~
IN+
Text Notes 2900 5950 0    60   ~
Sensor
$Comp
L CONN_1 P4
U 1 1 48E7EF57
P 3400 6050
F 0 "P4" H 3480 6050 40  0000 C C
F 1 "CONN_1" H 3350 6090 30  0001 C C
	1    3400 6050
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P3
U 1 1 48E7EF4D
P 3400 5800
F 0 "P3" H 3480 5800 40  0000 C C
F 1 "CONN_1" H 3350 5840 30  0001 C C
	1    3400 5800
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P2
U 1 1 48E7EF47
P 2750 6050
F 0 "P2" H 2830 6050 40  0000 C C
F 1 "CONN_1" H 2700 6090 30  0001 C C
	1    2750 6050
	1    0    0    -1  
$EndComp
$Comp
L CONN_1 P1
U 1 1 48E7EF41
P 2750 5800
F 0 "P1" H 2830 5800 40  0000 C C
F 1 "CONN_1" H 2700 5840 30  0001 C C
	1    2750 5800
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR6
U 1 1 48E7EF04
P 1800 6250
F 0 "#PWR6" H 1800 6250 30  0001 C C
F 1 "GND" H 1800 6180 30  0001 C C
	1    1800 6250
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR5
U 1 1 48E7EF01
P 1800 5350
F 0 "#PWR5" H 1800 5440 20  0001 C C
F 1 "+5V" H 1800 5440 30  0000 C C
	1    1800 5350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR14
U 1 1 48E7EEE0
P 4700 6200
F 0 "#PWR14" H 4700 6200 30  0001 C C
F 1 "GND" H 4700 6130 30  0001 C C
	1    4700 6200
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR21
U 1 1 48E7EEDA
P 6350 5500
F 0 "#PWR21" H 6350 5500 30  0001 C C
F 1 "GND" H 6350 5430 30  0001 C C
	1    6350 5500
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR13
U 1 1 48E7EED3
P 4700 5700
F 0 "#PWR13" H 4700 5700 30  0001 C C
F 1 "GND" H 4700 5630 30  0001 C C
	1    4700 5700
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR22
U 1 1 48E7EEBD
P 6350 6400
F 0 "#PWR22" H 6350 6490 20  0001 C C
F 1 "+5V" H 6350 6490 30  0000 C C
	1    6350 6400
	-1   0    0    1   
$EndComp
$Comp
L +5V #PWR12
U 1 1 48E7EEB4
P 4700 4800
F 0 "#PWR12" H 4700 4890 20  0001 C C
F 1 "+5V" H 4700 4890 30  0000 C C
	1    4700 4800
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR15
U 1 1 48E7EEA8
P 4700 7100
F 0 "#PWR15" H 4700 7190 20  0001 C C
F 1 "+5V" H 4700 7190 30  0000 C C
	1    4700 7100
	-1   0    0    1   
$EndComp
$Comp
L TL082 U2
U 2 1 48E7EDC6
P 4800 6650
F 0 "U2" H 4750 6850 60  0000 L C
F 1 "TL082" H 4750 6400 60  0000 L C
	2    4800 6650
	1    0    0    1   
$EndComp
$Comp
L TL082 U2
U 1 1 48E7EDC0
P 4800 5250
F 0 "U2" H 4750 5450 60  0000 L C
F 1 "TL082" H 4750 5000 60  0000 L C
	1    4800 5250
	1    0    0    -1  
$EndComp
$Comp
L TL082 U1
U 1 1 48E7EDB9
P 1900 5800
F 0 "U1" H 1850 6000 60  0000 L C
F 1 "TL082" H 1850 5550 60  0000 L C
	1    1900 5800
	1    0    0    -1  
$EndComp
$Comp
L TL082 U1
U 2 1 48E7EDAB
P 6450 5950
F 0 "U1" H 6400 6150 60  0000 L C
F 1 "TL082" H 6400 5700 60  0000 L C
	2    6450 5950
	1    0    0    1   
$EndComp
$Comp
L ATMEGA8-16PI I1
U 1 1 48E7ED06
P 5750 2550
F 0 "I1" H 6450 3950 60  0000 C C
F 1 "ATMEGA8-16PI" H 6400 1100 60  0000 C C
	1    5750 2550
	1    0    0    -1  
$EndComp
$EndSCHEMATC
bues.ch cgit interface