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