diff --git a/lab1/lab1.sch b/lab1/lab1.sch
index 13ef5151a116eb40f48b7adc0e71bef678e49d60..ef2bd2c1d330551faf6806498a8729f1bd9f3e38 100644
--- a/lab1/lab1.sch
+++ b/lab1/lab1.sch
@@ -824,44 +824,31 @@ F 3 "" H 3400 6300 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L power:+5V #PWR0130
-U 1 1 602971EE
+L power:+3.3V #PWR0131
+U 1 1 6029BF55
 P 3050 3950
-F 0 "#PWR0130" H 3050 3800 50  0001 C CNN
-F 1 "+5V" H 3065 4123 50  0000 C CNN
+F 0 "#PWR0131" H 3050 3800 50  0001 C CNN
+F 1 "+3.3V" H 3065 4123 50  0000 C CNN
 F 2 "" H 3050 3950 50  0001 C CNN
 F 3 "" H 3050 3950 50  0001 C CNN
 	1    3050 3950
 	1    0    0    -1  
 $EndComp
 $Comp
-L power:+3.3V #PWR0131
-U 1 1 6029BF55
-P 3800 3950
-F 0 "#PWR0131" H 3800 3800 50  0001 C CNN
-F 1 "+3.3V" H 3815 4123 50  0000 C CNN
-F 2 "" H 3800 3950 50  0001 C CNN
-F 3 "" H 3800 3950 50  0001 C CNN
-	1    3800 3950
-	1    0    0    -1  
-$EndComp
-$Comp
 L lab1-rescue:+1.9V-power #PWR0132
 U 1 1 602A0D20
-P 4500 4050
-F 0 "#PWR0132" H 4500 3900 50  0001 C CNN
-F 1 "+1.9V" H 4515 4223 50  0000 C CNN
-F 2 "" H 4500 4050 50  0001 C CNN
-F 3 "" H 4500 4050 50  0001 C CNN
-	1    4500 4050
+P 3750 4050
+F 0 "#PWR0132" H 3750 3900 50  0001 C CNN
+F 1 "+1.9V" H 3765 4223 50  0000 C CNN
+F 2 "" H 3750 4050 50  0001 C CNN
+F 3 "" H 3750 4050 50  0001 C CNN
+	1    3750 4050
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
 	3050 3950 3200 3950
 Wire Wire Line
-	3800 3950 3950 3950
-Wire Wire Line
-	4500 4050 4650 4050
+	3750 4050 3900 4050
 $Comp
 L Connector:Conn_01x01_Male J3
 U 1 1 602F84E9
@@ -1168,105 +1155,68 @@ Connection ~ 4250 6200
 Wire Wire Line
 	4150 6350 4250 6350
 $Comp
-L Device:LED D1
-U 1 1 603EAF1A
-P 3350 4500
-F 0 "D1" H 3343 4717 50  0000 C CNN
-F 1 "KPTD-2012SURCK" H 3343 4626 50  0000 C CNN
-F 2 "LED_SMD:LED_1206_3216Metric" H 3350 4500 50  0001 C CNN
-F 3 "~" H 3350 4500 50  0001 C CNN
-	1    3350 4500
-	-1   0    0    -1  
-$EndComp
-$Comp
-L Device:R R1
-U 1 1 60480488
+L Device:R R2
+U 1 1 604F2FD8
 P 3200 4100
-F 0 "R1" H 3270 4146 50  0000 L CNN
-F 1 "150Ω" H 3270 4055 50  0000 L CNN
+F 0 "R2" H 3270 4146 50  0000 L CNN
+F 1 "68Ω" H 3270 4055 50  0000 L CNN
 F 2 "" V 3130 4100 50  0001 C CNN
 F 3 "~" H 3200 4100 50  0001 C CNN
 	1    3200 4100
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	3200 4250 3200 4500
-Wire Wire Line
-	3500 4500 3600 4500
-$Comp
-L power:GND #PWR0136
-U 1 1 604D4DA7
-P 3600 4500
-F 0 "#PWR0136" H 3600 4250 50  0001 C CNN
-F 1 "GND" H 3605 4327 50  0000 C CNN
-F 2 "" H 3600 4500 50  0001 C CNN
-F 3 "" H 3600 4500 50  0001 C CNN
-	1    3600 4500
-	1    0    0    -1  
-$EndComp
-$Comp
-L Device:R R2
-U 1 1 604F2FD8
-P 3950 4100
-F 0 "R2" H 4020 4146 50  0000 L CNN
-F 1 "68Ω" H 4020 4055 50  0000 L CNN
-F 2 "" V 3880 4100 50  0001 C CNN
-F 3 "~" H 3950 4100 50  0001 C CNN
-	1    3950 4100
-	1    0    0    -1  
-$EndComp
 $Comp
 L Device:LED D3
 U 1 1 604FA4E1
-P 4800 4250
-F 0 "D3" H 4793 4467 50  0000 C CNN
-F 1 "KPTD-2012SURCK" H 4793 4376 50  0000 C CNN
-F 2 "LED_SMD:LED_1206_3216Metric" H 4800 4250 50  0001 C CNN
-F 3 "~" H 4800 4250 50  0001 C CNN
-	1    4800 4250
+P 4050 4250
+F 0 "D3" H 4043 4467 50  0000 C CNN
+F 1 "KPTD-2012SURCK" H 4043 4376 50  0000 C CNN
+F 2 "LED_SMD:LED_1206_3216Metric" H 4050 4250 50  0001 C CNN
+F 3 "~" H 4050 4250 50  0001 C CNN
+	1    4050 4250
 	-1   0    0    -1  
 $EndComp
 Wire Wire Line
-	4950 4250 5050 4250
+	4200 4250 4300 4250
 $Comp
 L power:GND #PWR0137
 U 1 1 604FA4E8
-P 5050 4250
-F 0 "#PWR0137" H 5050 4000 50  0001 C CNN
-F 1 "GND" H 5055 4077 50  0000 C CNN
-F 2 "" H 5050 4250 50  0001 C CNN
-F 3 "" H 5050 4250 50  0001 C CNN
-	1    5050 4250
+P 4300 4250
+F 0 "#PWR0137" H 4300 4000 50  0001 C CNN
+F 1 "GND" H 4305 4077 50  0000 C CNN
+F 2 "" H 4300 4250 50  0001 C CNN
+F 3 "" H 4300 4250 50  0001 C CNN
+	1    4300 4250
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	4650 4050 4650 4250
+	3900 4050 3900 4250
 Text Notes 3150 5200 0    50   ~ 0
 LED has forward voltage drop of 1.95 \nand forward current of 20 mA\nSo no resistor from +1.9V to GND\n3.3V:(3.3-1.95)/20mA = 67.5 ≈ 68\n5V: (5V-1.95V)/20mA = 152.5 ≈ 150 \n
 $Comp
 L Device:LED D2
 U 1 1 6055211D
-P 4100 4500
-F 0 "D2" H 4093 4717 50  0000 C CNN
-F 1 "KPTD-2012SURCK" H 4093 4626 50  0000 C CNN
-F 2 "LED_SMD:LED_1206_3216Metric" H 4100 4500 50  0001 C CNN
-F 3 "~" H 4100 4500 50  0001 C CNN
-	1    4100 4500
+P 3350 4500
+F 0 "D2" H 3343 4717 50  0000 C CNN
+F 1 "KPTD-2012SURCK" H 3343 4626 50  0000 C CNN
+F 2 "LED_SMD:LED_1206_3216Metric" H 3350 4500 50  0001 C CNN
+F 3 "~" H 3350 4500 50  0001 C CNN
+	1    3350 4500
 	-1   0    0    -1  
 $EndComp
 Wire Wire Line
-	3950 4250 3950 4500
+	3200 4250 3200 4500
 Wire Wire Line
-	4250 4500 4350 4500
+	3500 4500 3600 4500
 $Comp
 L power:GND #PWR0138
 U 1 1 60552125
-P 4350 4500
-F 0 "#PWR0138" H 4350 4250 50  0001 C CNN
-F 1 "GND" H 4355 4327 50  0000 C CNN
-F 2 "" H 4350 4500 50  0001 C CNN
-F 3 "" H 4350 4500 50  0001 C CNN
-	1    4350 4500
+P 3600 4500
+F 0 "#PWR0138" H 3600 4250 50  0001 C CNN
+F 1 "GND" H 3605 4327 50  0000 C CNN
+F 2 "" H 3600 4500 50  0001 C CNN
+F 3 "" H 3600 4500 50  0001 C CNN
+	1    3600 4500
 	1    0    0    -1  
 $EndComp
 Connection ~ 1250 6550