EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Device:R R2
U 1 1 5E6508F4
P 3800 3950
F 0 "R2" H 3870 3996 50  0000 L CNN
F 1 "R" H 3870 3905 50  0000 L CNN
F 2 "" V 3730 3950 50  0001 C CNN
F 3 "~" H 3800 3950 50  0001 C CNN
	1    3800 3950
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Variable R1
U 1 1 5E651FB8
P 2950 3250
F 0 "R1" H 3078 3296 50  0000 L CNN
F 1 "R_Variable" H 3078 3205 50  0000 L CNN
F 2 "" V 2880 3250 50  0001 C CNN
F 3 "~" H 2950 3250 50  0001 C CNN
	1    2950 3250
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5E652322
P 3450 3850
F 0 "C2" H 3565 3896 50  0000 L CNN
F 1 "C" H 3565 3805 50  0000 L CNN
F 2 "" H 3488 3700 50  0001 C CNN
F 3 "~" H 3450 3850 50  0001 C CNN
	1    3450 3850
	1    0    0    -1  
$EndComp
$Comp
L Device:CP1 C1
U 1 1 5E652852
P 2950 3850
F 0 "C1" H 3065 3896 50  0000 L CNN
F 1 "CP1" H 3065 3805 50  0000 L CNN
F 2 "" H 2950 3850 50  0001 C CNN
F 3 "~" H 2950 3850 50  0001 C CNN
	1    2950 3850
	1    0    0    -1  
$EndComp
$Comp
L Timer:NE555 U1
U 1 1 5E65334F
P 4450 3600
F 0 "U1" H 4450 4181 50  0000 C CNN
F 1 "NE555" H 4450 4090 50  0000 C CNN
F 2 "" H 4450 3600 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/ne555.pdf" H 4450 3600 50  0001 C CNN
	1    4450 3600
	1    0    0    -1  
$EndComp
$Comp
L Device:LED D1
U 1 1 5E653F2E
P 6900 4050
F 0 "D1" V 6939 3933 50  0000 R CNN
F 1 "LED" V 6848 3933 50  0000 R CNN
F 2 "" H 6900 4050 50  0001 C CNN
F 3 "~" H 6900 4050 50  0001 C CNN
	1    6900 4050
	0    -1   -1   0   
$EndComp
$Comp
L Device:LED D2
U 1 1 5E65437A
P 7350 4050
F 0 "D2" V 7389 3933 50  0000 R CNN
F 1 "LED" V 7298 3933 50  0000 R CNN
F 2 "" H 7350 4050 50  0001 C CNN
F 3 "~" H 7350 4050 50  0001 C CNN
	1    7350 4050
	0    -1   -1   0   
$EndComp
$Comp
L Device:LED D3
U 1 1 5E65494E
P 7750 4050
F 0 "D3" V 7789 3933 50  0000 R CNN
F 1 "LED" V 7698 3933 50  0000 R CNN
F 2 "" H 7750 4050 50  0001 C CNN
F 3 "~" H 7750 4050 50  0001 C CNN
	1    7750 4050
	0    -1   -1   0   
$EndComp
$Comp
L Device:LED D4
U 1 1 5E654CB6
P 8300 4050
F 0 "D4" V 8339 3933 50  0000 R CNN
F 1 "LED" V 8248 3933 50  0000 R CNN
F 2 "" H 8300 4050 50  0001 C CNN
F 3 "~" H 8300 4050 50  0001 C CNN
	1    8300 4050
	0    -1   -1   0   
$EndComp
$Comp
L Device:LED D5
U 1 1 5E655127
P 8800 4050
F 0 "D5" V 8839 3933 50  0000 R CNN
F 1 "LED" V 8748 3933 50  0000 R CNN
F 2 "" H 8800 4050 50  0001 C CNN
F 3 "~" H 8800 4050 50  0001 C CNN
	1    8800 4050
	0    -1   -1   0   
$EndComp
$Comp
L Device:LED D6
U 1 1 5E656EE2
P 9250 4050
F 0 "D6" V 9289 3933 50  0000 R CNN
F 1 "LED" V 9198 3933 50  0000 R CNN
F 2 "" H 9250 4050 50  0001 C CNN
F 3 "~" H 9250 4050 50  0001 C CNN
	1    9250 4050
	0    -1   -1   0   
$EndComp
$Comp
L Device:LED D7
U 1 1 5E657285
P 9700 4050
F 0 "D7" V 9739 3933 50  0000 R CNN
F 1 "LED" V 9648 3933 50  0000 R CNN
F 2 "" H 9700 4050 50  0001 C CNN
F 3 "~" H 9700 4050 50  0001 C CNN
	1    9700 4050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6400 3250 6900 3250
Wire Wire Line
	6900 3250 6900 3900
Wire Wire Line
	6400 3350 7350 3350
Wire Wire Line
	7350 3350 7350 3900
Wire Wire Line
	6400 3450 8000 3450
Wire Wire Line
	8000 3450 8000 3750
Wire Wire Line
	8000 3750 7750 3750
Wire Wire Line
	7750 3750 7750 3900
Wire Wire Line
	8000 3750 8300 3750
Wire Wire Line
	8300 3750 8300 3900
Connection ~ 8000 3750
Wire Wire Line
	9250 3550 9250 3750
Wire Wire Line
	9250 3750 8800 3750
Wire Wire Line
	8800 3750 8800 3900
Connection ~ 9250 3750
Wire Wire Line
	9250 3750 9250 3900
Wire Wire Line
	9250 3750 9700 3750
Wire Wire Line
	9700 3750 9700 3900
Wire Wire Line
	9700 4200 9250 4200
Wire Wire Line
	9250 4200 8800 4200
Connection ~ 9250 4200
Wire Wire Line
	8800 4200 8300 4200
Connection ~ 8800 4200
Wire Wire Line
	8300 4200 7750 4200
Connection ~ 8300 4200
Wire Wire Line
	7750 4200 7350 4200
Connection ~ 7750 4200
Wire Wire Line
	7350 4200 6900 4200
Connection ~ 7350 4200
Wire Wire Line
	5400 3750 5300 3750
Wire Wire Line
	5300 3750 5300 4250
Connection ~ 5400 3750
Wire Wire Line
	5400 3350 5250 3350
Wire Wire Line
	5250 3350 5250 3100
Wire Wire Line
	5250 3100 6400 3100
Wire Wire Line
	6400 3100 6400 3250
Wire Wire Line
	5400 3250 4950 3250
Wire Wire Line
	4950 3250 4950 3400
Wire Wire Line
	4450 4000 4450 4250
Wire Wire Line
	4450 4250 5300 4250
Connection ~ 5300 4250
Wire Wire Line
	3950 3600 3450 3600
Wire Wire Line
	3450 3600 3450 3700
Wire Wire Line
	3450 4000 3450 4250
Wire Wire Line
	3450 4250 4450 4250
Connection ~ 4450 4250
Wire Wire Line
	3950 3800 3800 3800
Wire Wire Line
	3800 3800 3800 2950
Wire Wire Line
	3800 2950 4450 2950
Wire Wire Line
	4450 3200 4450 2950
Connection ~ 4450 2950
Wire Wire Line
	4450 2950 5100 2950
$Comp
L power:PWR_FLAG #FLG01
U 1 1 5E671AB6
P 4450 2950
F 0 "#FLG01" H 4450 3025 50  0001 C CNN
F 1 "PWR_FLAG" H 4450 3123 50  0000 C CNN
F 2 "" H 4450 2950 50  0001 C CNN
F 3 "~" H 4450 2950 50  0001 C CNN
	1    4450 2950
	1    0    0    -1  
$EndComp
Connection ~ 3800 3800
Wire Wire Line
	4950 3600 5150 3600
Wire Wire Line
	5150 3600 5150 4100
Wire Wire Line
	5150 4100 3800 4100
Wire Wire Line
	4950 3800 4950 4500
Wire Wire Line
	4950 4500 3900 4500
Wire Wire Line
	3900 4500 3900 3400
Wire Wire Line
	3900 3400 3950 3400
Wire Wire Line
	3900 3400 2950 3400
Connection ~ 3900 3400
Wire Wire Line
	2950 3100 4950 3100
Wire Wire Line
	4950 3100 4950 3250
Connection ~ 4950 3250
Wire Wire Line
	2950 3400 2950 3700
Connection ~ 2950 3400
Wire Wire Line
	2950 4000 2950 4250
Wire Wire Line
	2950 4250 3450 4250
Connection ~ 3450 4250
Connection ~ 5900 4250
Wire Wire Line
	5300 4250 5900 4250
Wire Wire Line
	6900 4200 6900 4250
Wire Wire Line
	6900 4250 5900 4250
Connection ~ 6900 4200
$Comp
L power:GND #PWR01
U 1 1 5E68C90F
P 4450 4250
F 0 "#PWR01" H 4450 4000 50  0001 C CNN
F 1 "GND" H 4450 4100 50  0000 C CNN
F 2 "" H 4450 4250 50  0001 C CNN
F 3 "" H 4450 4250 50  0001 C CNN
	1    4450 4250
	1    0    0    -1  
$EndComp
$Comp
L power:PWR_FLAG #FLG0101
U 1 1 5E693E22
P 5900 4250
F 0 "#FLG0101" H 5900 4325 50  0001 C CNN
F 1 "PWR_FLAG" H 5900 4423 50  0000 C CNN
F 2 "" H 5900 4250 50  0001 C CNN
F 3 "~" H 5900 4250 50  0001 C CNN
	1    5900 4250
	-1   0    0    1   
$EndComp
Connection ~ 6400 3250
Connection ~ 5400 3850
Wire Wire Line
	5400 3750 5400 3850
Wire Wire Line
	5400 3850 5400 3950
Connection ~ 5400 3650
Wire Wire Line
	5400 3650 5400 3750
Wire Wire Line
	5400 3550 5400 3650
Wire Wire Line
	6400 3550 9250 3550
$Comp
L 74xx:74LS90 U2
U 1 1 5E64FBE6
P 5900 3550
F 0 "U2" H 5900 4331 50  0000 C CNN
F 1 "74LS90" H 5900 4240 50  0000 C CNN
F 2 "" H 5900 3550 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS90" H 5900 3550 50  0001 C CNN
	1    5900 3550
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR02
U 1 1 5E698F02
P 5100 2950
F 0 "#PWR02" H 5100 2800 50  0001 C CNN
F 1 "VCC" H 5117 3123 50  0000 C CNN
F 2 "" H 5100 2950 50  0001 C CNN
F 3 "" H 5100 2950 50  0001 C CNN
	1    5100 2950
	1    0    0    -1  
$EndComp
Connection ~ 5100 2950
Wire Wire Line
	5100 2950 5900 2950
$EndSCHEMATC