diff --git a/README.md b/README.md
index 91dc2ab7a6a625b9505f20cd8d9d6f6f216d1f40..9ebbfe91826dfc1225a7dba576f7085612b3007e 100644
--- a/README.md
+++ b/README.md
@@ -89,14 +89,14 @@ There is an internal pull-up resistor keeping the pin high (allowing the MCU to
 
 Later we will add a Reset Button, so that you can force reset even when the MCU is powered and running.
 
-### 5) Pull-down resistor to BOOT0 (boot mode)
+### 5) <span style="color: green;"> Pull-down resistor to BOOT0 (boot mode) *Done* </span>
 
 The microcontroller can boot in different modes, similar to how you can enter the BIOS when booting your PC by pressing the F2-key (or other F-key). This can save you in tricky situations, for example if you are playing with the main clock or with sleep modes and it crashes, making you unable to upload (flash) a new binary to the microcontroller. You can boot in "safe mode" by pulling this pin high (so it does not run you code on startup) allowing you to upload a new binary even if your code would otherwise brick your MCU.
 
 - Add a 10k pull-down resistor to the BOOT0 pin.
 - Add a "jumper" between BOOT0 and +3.3v, so that you can easily boot into "safe mode" by shorting these two terminals. You could make this a 3-pin header and "no-connect" the third terminal in order to provide a place to store the jumper when not in use.
 
-### 6) Crystal
+### 6) <span style="color: green;"> Crystal *Done* </span>
 
 The crystal will resonate at a specified frequency. Its waveform will be used as an input to the PLL (Phase Locked Loop) that will multiply the crystal’s frequency. This is the crystal that will be used: https://www.elfa.se/sv/kristall-ytmontering-16mhz-iqd-lfxtal029370/p/30131284
 
@@ -112,7 +112,7 @@ where `Cload` is the load capacitance value specified in the crystal's [datashee
 - Connect the component with wires to the mentioned pins. Value 16MHz.
 - Connect one 22pF capacitor to each pin on the crystal and connect the other end of the capacitors to GND.
 
-### 7) Serial Wire Debug (SWD) connector
+### 7)  <span style="color: green;">  Serial Wire Debug (SWD) connector *Done* </span>
 
 To program and debug the MCU we will use a SWD connector (6 pin header). Sometimes it can be tricky to find all the information in the datasheet and user manual for the microcontroller, all the information you need is there, it will just take time to find it. However, it can then be useful to follow proven examples like your Nucleo board. This is the type of connector that will be used: https://www.elfa.se/en/straight-male-pcb-header-through-hole-rows-contacts-54mm-pitch-rnd-connect-rnd-205-00627/p/30093647
 
@@ -122,20 +122,20 @@ To program and debug the MCU we will use a SWD connector (6 pin header). Sometim
 - You can connect pins without wires going everywhere. Use ”net labels” (button to the right) to name one wire. It will connect all wires with the same name in the local sheet.
 - VDDTARGET→+3.3V. GND→GND. NRST→NRST. SWCLK→SWCLK (PA14). SWDIO→SWDIO (PA13). SWO→SWO (PB3)
 
-### 8) Power from USB
+### 8) <span style="color: green;"> Power from USB *Done* </span>
 
 One easy way to get power to your project is through USB. It can deliver up to 100mA without any negotiations.
 
 - Add a ”USBOTG” connector to your schematic. Already here you can think about how you should connect your mouse and use a suitable connector (mini, micro or even usb-c).
 - Find the USB pinout for your connector.
 
-### 9) 3.3V Power Supply
+### 9) <span style="color: green;"> 3.3V Power Supply *Done* </span>
 
 The MCU wants to be powered from a 3.3V rail. To this end we will use a fixed LDO (low dropout) linear regulator, to convert a 5V input (from the USB connector) to a 3.3V output. We will use the [AP2125N-3.3TRG1](https://www.elfa.se/en/ldo-voltage-regulator-3v-360ma-sot-23-diodes-incorporated-ap2125n-3trg1/p/30041163) for this.
 
 Look in the [datasheet](https://www.elfa.se/Web/Downloads/_t/ds/AP2125_eng_tds.pdf) for a typical application circuit. Later we will design the power supply for the PWM3389 sensor, which is a bit trickier.
 
-### 10) PWM3389DM-T3QU Schematic Symbol
+### 10) <span style="color: green;"> PWM3389DM-T3QU Schematic Symbol *Done* </span>
 
 Download the general [datasheet](https://www.pixart.com/products-detail/4/PMW3389DM-T3QU), and look at section 3. There you will find a reference schematic.
 
@@ -151,7 +151,8 @@ For some components (like the PMW3389DM-T3QU) there might not exist a pre-made l
 
 Hint. Never, never ever, change the grid settings when placing the pins in the symbol.
 
-### 11) 1.9V Power Supply
+### 11) <span style="color: green;"> 1.9V Power Supply *Done* </span>
+<span style="color: red;"> Need to figure out R1 and R2 </span>
 
 As you can see in the PWM3389DM-T3QU datasheet and reference schematics, the sensor requires a 1.9v power supply. This is a much less common voltage for a fixed output LDO (try finding one from Elfa or rs-online and you will likely fail).
 
diff --git a/lab1/lab1-cache.lib b/lab1/lab1-cache.lib
index 06871c709815bc8f6d8707de84e37ec243184f4a..905809da789f4bf5d43c223d95116592f36d43f0 100644
--- a/lab1/lab1-cache.lib
+++ b/lab1/lab1-cache.lib
@@ -1,6 +1,23 @@
 EESchema-LIBRARY Version 2.4
 #encoding utf-8
 #
+# Connector_Conn_01x01_Male
+#
+DEF Connector_Conn_01x01_Male J 0 40 Y N 1 F N
+F0 "J" 0 100 50 H V C CNN
+F1 "Connector_Conn_01x01_Male" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*
+$ENDFPLIST
+DRAW
+S 34 5 0 -5 1 1 6 F
+P 2 1 1 6 50 0 34 0 N
+X Pin_1 1 200 0 150 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Connector_Conn_01x06_Male
 #
 DEF Connector_Conn_01x06_Male J 0 40 Y N 1 F N
@@ -33,6 +50,23 @@ X Pin_6 6 200 -300 150 L 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Connector_TestPoint
+#
+DEF Connector_TestPoint TP 0 30 N N 1 F N
+F0 "TP" 0 270 50 H V C CNN
+F1 "Connector_TestPoint" 0 200 50 H V C CNN
+F2 "" 200 0 50 H I C CNN
+F3 "" 200 0 50 H I C CNN
+$FPLIST
+ Pin*
+ Test*
+$ENDFPLIST
+DRAW
+C 0 130 30 0 1 0 N
+X 1 1 0 0 100 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Connector_USB_C_Plug_USB2.0
 #
 DEF Connector_USB_C_Plug_USB2.0 P 0 40 Y Y 1 F N
@@ -83,41 +117,6 @@ X SHIELD S1 -300 -900 200 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# Connector_USB_OTG
-#
-DEF Connector_USB_OTG J 0 40 Y Y 1 F N
-F0 "J" -200 450 50 H V L CNN
-F1 "Connector_USB_OTG" -200 350 50 H V L CNN
-F2 "" 150 -50 50 H I C CNN
-F3 "" 150 -50 50 H I C CNN
-$FPLIST
- USB*
-$ENDFPLIST
-DRAW
-C -150 85 25 0 1 10 F
-C -25 135 15 0 1 10 F
-S -200 -300 200 300 0 1 10 f
-S -5 -300 5 -270 0 1 0 N
-S 10 50 -20 20 0 1 10 F
-S 200 -205 170 -195 0 1 0 N
-S 200 -105 170 -95 0 1 0 N
-S 200 -5 170 5 0 1 0 N
-S 200 195 170 205 0 1 0 N
-P 2 0 1 10 -75 85 25 85 N
-P 4 0 1 10 -125 85 -100 85 -50 135 -25 135 N
-P 4 0 1 10 -100 85 -75 85 -50 35 0 35 N
-P 4 0 1 10 25 110 25 60 75 85 25 110 F
-P 5 0 1 0 -170 220 -70 220 -80 190 -160 190 -170 220 F
-P 9 0 1 0 -185 230 -185 220 -175 190 -175 180 -65 180 -65 190 -55 220 -55 230 -185 230 N
-X VBUS 1 300 200 100 L 50 50 1 1 P
-X D- 2 300 -100 100 L 50 50 1 1 B
-X D+ 3 300 0 100 L 50 50 1 1 B
-X ID 4 300 -200 100 L 50 50 1 1 P
-X GND 5 0 -400 100 U 50 50 1 1 P
-X Shield 6 -100 -400 100 U 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
 # Device_C
 #
 DEF Device_C C 0 10 N Y 1 F N
@@ -368,6 +367,21 @@ X MOTION 9 450 -500 100 L 50 50 1 1 O
 ENDDRAW
 ENDDEF
 #
+# power_+1.9V
+#
+DEF power_+1.9V #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_+1.9V" 0 140 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 2 0 1 0 -30 50 0 100 N
+P 2 0 1 0 0 0 0 100 N
+P 2 0 1 0 0 100 30 50 N
+X +1.9V 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
 # power_+3.3V
 #
 DEF power_+3.3V #PWR 0 0 Y Y 1 F P
diff --git a/lab1/lab1.sch b/lab1/lab1.sch
index ecb1de44f54781628a7ad23cf9280fa46e74abe5..bf0139fecbbdc68649366deb40c96cdcc0b1cc3b 100644
--- a/lab1/lab1.sch
+++ b/lab1/lab1.sch
@@ -183,43 +183,6 @@ $EndComp
 Text GLabel 7150 2000 0    50   Input ~ 0
 BOOT0
 $Comp
-L Connector:USB_OTG J?
-U 1 1 600E3B60
-P 2750 1300
-F 0 "J?" H 2807 1767 50  0000 C CNN
-F 1 "USB_OTG" H 2807 1676 50  0000 C CNN
-F 2 "" H 2900 1250 50  0001 C CNN
-F 3 " ~" H 2900 1250 50  0001 C CNN
-	1    2750 1300
-	1    0    0    -1  
-$EndComp
-NoConn ~ 3050 1500
-NoConn ~ 2650 1700
-$Comp
-L power:GND #PWR0108
-U 1 1 600E55E8
-P 2750 1750
-F 0 "#PWR0108" H 2750 1500 50  0001 C CNN
-F 1 "GND" H 2755 1577 50  0000 C CNN
-F 2 "" H 2750 1750 50  0001 C CNN
-F 3 "" H 2750 1750 50  0001 C CNN
-	1    2750 1750
-	1    0    0    -1  
-$EndComp
-$Comp
-L power:+5V #PWR0109
-U 1 1 600E640E
-P 3150 1100
-F 0 "#PWR0109" H 3150 950 50  0001 C CNN
-F 1 "+5V" H 3165 1273 50  0000 C CNN
-F 2 "" H 3150 1100 50  0001 C CNN
-F 3 "" H 3150 1100 50  0001 C CNN
-	1    3150 1100
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	3050 1100 3150 1100
-$Comp
 L Switch:SW_MEC_5G SW?
 U 1 1 600E8EB3
 P 9900 2350
@@ -233,79 +196,79 @@ $EndComp
 $Comp
 L Regulator_Linear:MIC5205-3.3YM5 U?
 U 1 1 600F072A
-P 2700 2650
-F 0 "U?" H 2700 2992 50  0000 C CNN
-F 1 "PWM3389DM-T3QU" H 2700 2901 50  0000 C CNN
-F 2 "Package_TO_SOT_SMD:SOT-23-5" H 2700 2975 50  0001 C CNN
-F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/20005785A.pdf" H 2700 2650 50  0001 C CNN
-	1    2700 2650
+P 3950 2550
+F 0 "U?" H 3950 2892 50  0000 C CNN
+F 1 "PWM3389DM-T3QU" H 3950 2801 50  0000 C CNN
+F 2 "Package_TO_SOT_SMD:SOT-23-5" H 3950 2875 50  0001 C CNN
+F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/20005785A.pdf" H 3950 2550 50  0001 C CNN
+	1    3950 2550
 	1    0    0    -1  
 $EndComp
 $Comp
 L Regulator_Linear:AP2127N-3.3 U?
 U 1 1 600F5B49
-P 4200 1000
-F 0 "U?" H 4200 1242 50  0000 C CNN
-F 1 "AP2125N-3.3TRG1" H 4200 1151 50  0000 C CNN
-F 2 "Package_TO_SOT_SMD:SOT-23" H 4200 1225 50  0001 C CIN
-F 3 "https://www.diodes.com/assets/Datasheets/AP2127.pdf" H 4200 1000 50  0001 C CNN
-	1    4200 1000
+P 4000 1000
+F 0 "U?" H 4000 1242 50  0000 C CNN
+F 1 "AP2125N-3.3TRG1" H 4000 1151 50  0000 C CNN
+F 2 "Package_TO_SOT_SMD:SOT-23" H 4000 1225 50  0001 C CIN
+F 3 "https://www.diodes.com/assets/Datasheets/AP2127.pdf" H 4000 1000 50  0001 C CNN
+	1    4000 1000
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:+5V #PWR?
 U 1 1 600F7A77
-P 2250 2450
-F 0 "#PWR?" H 2250 2300 50  0001 C CNN
-F 1 "+5V" H 2265 2623 50  0000 C CNN
-F 2 "" H 2250 2450 50  0001 C CNN
-F 3 "" H 2250 2450 50  0001 C CNN
-	1    2250 2450
+P 3500 2350
+F 0 "#PWR?" H 3500 2200 50  0001 C CNN
+F 1 "+5V" H 3515 2523 50  0000 C CNN
+F 2 "" H 3500 2350 50  0001 C CNN
+F 3 "" H 3500 2350 50  0001 C CNN
+	1    3500 2350
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:C C?
 U 1 1 600F8FFC
-P 2250 2900
-F 0 "C?" H 2365 2946 50  0000 L CNN
-F 1 "1μF" H 2365 2855 50  0000 L CNN
-F 2 "" H 2288 2750 50  0001 C CNN
-F 3 "~" H 2250 2900 50  0001 C CNN
-	1    2250 2900
+P 3500 2800
+F 0 "C?" H 3615 2846 50  0000 L CNN
+F 1 "1μF" H 3615 2755 50  0000 L CNN
+F 2 "" H 3538 2650 50  0001 C CNN
+F 3 "~" H 3500 2800 50  0001 C CNN
+	1    3500 2800
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2250 2750 2250 2650
+	3500 2650 3500 2550
 Wire Wire Line
-	2400 2550 2250 2550
-Connection ~ 2250 2550
+	3650 2450 3500 2450
+Connection ~ 3500 2450
 Wire Wire Line
-	2250 2550 2250 2450
-Connection ~ 2250 2650
+	3500 2450 3500 2350
+Connection ~ 3500 2550
 Wire Wire Line
-	2250 2650 2250 2550
+	3500 2550 3500 2450
 Wire Wire Line
-	2250 2650 2400 2650
+	3500 2550 3650 2550
 $Comp
 L power:GND #PWR?
 U 1 1 600FB3E7
-P 2700 3300
-F 0 "#PWR?" H 2700 3050 50  0001 C CNN
-F 1 "GND" H 2705 3127 50  0000 C CNN
-F 2 "" H 2700 3300 50  0001 C CNN
-F 3 "" H 2700 3300 50  0001 C CNN
-	1    2700 3300
+P 3950 3200
+F 0 "#PWR?" H 3950 2950 50  0001 C CNN
+F 1 "GND" H 3955 3027 50  0000 C CNN
+F 2 "" H 3950 3200 50  0001 C CNN
+F 3 "" H 3950 3200 50  0001 C CNN
+	1    3950 3200
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 600FC23A
-P 2250 3300
-F 0 "#PWR?" H 2250 3050 50  0001 C CNN
-F 1 "GND" H 2255 3127 50  0000 C CNN
-F 2 "" H 2250 3300 50  0001 C CNN
-F 3 "" H 2250 3300 50  0001 C CNN
-	1    2250 3300
+P 3500 3200
+F 0 "#PWR?" H 3500 2950 50  0001 C CNN
+F 1 "GND" H 3505 3027 50  0000 C CNN
+F 2 "" H 3500 3200 50  0001 C CNN
+F 3 "" H 3500 3200 50  0001 C CNN
+	1    3500 3200
 	1    0    0    -1  
 $EndComp
 Connection ~ 6600 2900
@@ -374,9 +337,6 @@ Wire Wire Line
 Wire Wire Line
 	10550 1350 10200 1350
 Connection ~ 10550 1350
-Wire Wire Line
-	10550 1650 10200 1650
-Connection ~ 10550 1650
 $Comp
 L Device:C C?
 U 1 1 601209D1
@@ -444,7 +404,6 @@ Connection ~ 9500 1650
 Connection ~ 9850 1350
 Connection ~ 9850 1650
 Connection ~ 10200 1350
-Connection ~ 10200 1650
 Wire Wire Line
 	8800 1350 8200 1350
 Connection ~ 8800 1350
@@ -585,23 +544,23 @@ Connection ~ 8100 5150
 $Comp
 L Device:C C?
 U 1 1 601EFA0D
-P 4750 1150
-F 0 "C?" H 4865 1196 50  0000 L CNN
-F 1 "4u7" H 4865 1105 50  0000 L CNN
-F 2 "" H 4788 1000 50  0001 C CNN
-F 3 "~" H 4750 1150 50  0001 C CNN
-	1    4750 1150
+P 4550 1150
+F 0 "C?" H 4665 1196 50  0000 L CNN
+F 1 "4u7" H 4665 1105 50  0000 L CNN
+F 2 "" H 4588 1000 50  0001 C CNN
+F 3 "~" H 4550 1150 50  0001 C CNN
+	1    4550 1150
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:C C?
 U 1 1 601F13F1
-P 3650 1150
-F 0 "C?" H 3765 1196 50  0000 L CNN
-F 1 "4u7" H 3765 1105 50  0000 L CNN
-F 2 "" H 3688 1000 50  0001 C CNN
-F 3 "~" H 3650 1150 50  0001 C CNN
-	1    3650 1150
+P 3450 1150
+F 0 "C?" H 3565 1196 50  0000 L CNN
+F 1 "4u7" H 3565 1105 50  0000 L CNN
+F 2 "" H 3488 1000 50  0001 C CNN
+F 3 "~" H 3450 1150 50  0001 C CNN
+	1    3450 1150
 	1    0    0    -1  
 $EndComp
 $Comp
@@ -615,21 +574,19 @@ F 3 "https://www.usb.org/sites/default/files/documents/usb_type-c.zip" H 1350 15
 	1    1200 1550
 	1    0    0    -1  
 $EndComp
-Text Notes 2100 1300 0    50   ~ 0
-VS
 $Comp
 L power:+5V #PWR?
 U 1 1 60219DE1
-P 1900 950
-F 0 "#PWR?" H 1900 800 50  0001 C CNN
-F 1 "+5V" H 1915 1123 50  0000 C CNN
-F 2 "" H 1900 950 50  0001 C CNN
-F 3 "" H 1900 950 50  0001 C CNN
-	1    1900 950 
+P 2100 950
+F 0 "#PWR?" H 2100 800 50  0001 C CNN
+F 1 "+5V" H 2115 1123 50  0000 C CNN
+F 2 "" H 2100 950 50  0001 C CNN
+F 3 "" H 2100 950 50  0001 C CNN
+	1    2100 950 
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	1800 950  1900 950 
+	1800 950  2100 950 
 NoConn ~ 900  2450
 $Comp
 L power:GND #PWR?
@@ -642,83 +599,81 @@ F 3 "" H 1200 2500 50  0001 C CNN
 	1    1200 2500
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	2750 1700 2750 1750
 Wire Wire Line
 	1200 2500 1200 2450
 Wire Wire Line
-	4500 1000 4750 1000
+	4300 1000 4550 1000
 Wire Wire Line
-	3650 1000 3900 1000
+	3450 1000 3700 1000
 Wire Wire Line
-	2700 2950 2700 3300
+	3950 2850 3950 3200
 Wire Wire Line
-	2250 3050 2250 3300
+	3500 2950 3500 3200
 Wire Wire Line
-	4200 1300 4200 1350
+	4000 1300 4000 1350
 Wire Wire Line
-	4750 1300 4750 1350
+	4550 1300 4550 1350
 Wire Wire Line
-	3650 1300 3650 1350
+	3450 1300 3450 1350
 Wire Wire Line
-	4750 1000 4750 950 
-Connection ~ 4750 1000
+	4550 1000 4550 950 
+Connection ~ 4550 1000
 Wire Wire Line
-	3650 1000 3650 950 
-Connection ~ 3650 1000
+	3450 1000 3450 950 
+Connection ~ 3450 1000
 $Comp
 L power:+5V #PWR?
 U 1 1 6024BC1F
-P 3650 950
-F 0 "#PWR?" H 3650 800 50  0001 C CNN
-F 1 "+5V" H 3665 1123 50  0000 C CNN
-F 2 "" H 3650 950 50  0001 C CNN
-F 3 "" H 3650 950 50  0001 C CNN
-	1    3650 950 
+P 3450 950
+F 0 "#PWR?" H 3450 800 50  0001 C CNN
+F 1 "+5V" H 3465 1123 50  0000 C CNN
+F 2 "" H 3450 950 50  0001 C CNN
+F 3 "" H 3450 950 50  0001 C CNN
+	1    3450 950 
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:+3.3V #PWR?
 U 1 1 6024E05C
-P 4750 950
-F 0 "#PWR?" H 4750 800 50  0001 C CNN
-F 1 "+3.3V" H 4765 1123 50  0000 C CNN
-F 2 "" H 4750 950 50  0001 C CNN
-F 3 "" H 4750 950 50  0001 C CNN
-	1    4750 950 
+P 4550 950
+F 0 "#PWR?" H 4550 800 50  0001 C CNN
+F 1 "+3.3V" H 4565 1123 50  0000 C CNN
+F 2 "" H 4550 950 50  0001 C CNN
+F 3 "" H 4550 950 50  0001 C CNN
+	1    4550 950 
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 602505FC
-P 3650 1350
-F 0 "#PWR?" H 3650 1100 50  0001 C CNN
-F 1 "GND" H 3655 1177 50  0000 C CNN
-F 2 "" H 3650 1350 50  0001 C CNN
-F 3 "" H 3650 1350 50  0001 C CNN
-	1    3650 1350
+P 3450 1350
+F 0 "#PWR?" H 3450 1100 50  0001 C CNN
+F 1 "GND" H 3455 1177 50  0000 C CNN
+F 2 "" H 3450 1350 50  0001 C CNN
+F 3 "" H 3450 1350 50  0001 C CNN
+	1    3450 1350
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 602527C6
-P 4200 1350
-F 0 "#PWR?" H 4200 1100 50  0001 C CNN
-F 1 "GND" H 4205 1177 50  0000 C CNN
-F 2 "" H 4200 1350 50  0001 C CNN
-F 3 "" H 4200 1350 50  0001 C CNN
-	1    4200 1350
+P 4000 1350
+F 0 "#PWR?" H 4000 1100 50  0001 C CNN
+F 1 "GND" H 4005 1177 50  0000 C CNN
+F 2 "" H 4000 1350 50  0001 C CNN
+F 3 "" H 4000 1350 50  0001 C CNN
+	1    4000 1350
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 602549E4
-P 4750 1350
-F 0 "#PWR?" H 4750 1100 50  0001 C CNN
-F 1 "GND" H 4755 1177 50  0000 C CNN
-F 2 "" H 4750 1350 50  0001 C CNN
-F 3 "" H 4750 1350 50  0001 C CNN
-	1    4750 1350
+P 4550 1350
+F 0 "#PWR?" H 4550 1100 50  0001 C CNN
+F 1 "GND" H 4555 1177 50  0000 C CNN
+F 2 "" H 4550 1350 50  0001 C CNN
+F 3 "" H 4550 1350 50  0001 C CNN
+	1    4550 1350
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
@@ -735,105 +690,82 @@ F 3 "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/da
 	1    0    0    -1  
 $EndComp
 $Comp
-L lab1:PWM3389 U?
-U 1 1 60265B7D
-P 1900 4100
-F 0 "U?" H 1900 4525 50  0000 C CNN
-F 1 "PWM3389" H 1900 4434 50  0000 C CNN
-F 2 "" H 1900 4550 50  0001 C CNN
-F 3 "" H 1900 4550 50  0001 C CNN
-	1    1900 4100
-	1    0    0    -1  
-$EndComp
-$Comp
 L Device:C C?
 U 1 1 602687A5
-P 3550 2700
-F 0 "C?" H 3665 2746 50  0000 L CNN
-F 1 "2.2μF" H 3665 2655 50  0000 L CNN
-F 2 "" H 3588 2550 50  0001 C CNN
-F 3 "~" H 3550 2700 50  0001 C CNN
-	1    3550 2700
+P 4800 2250
+F 0 "C?" H 4915 2296 50  0000 L CNN
+F 1 "2.2μF" H 4915 2205 50  0000 L CNN
+F 2 "" H 4838 2100 50  0001 C CNN
+F 3 "~" H 4800 2250 50  0001 C CNN
+	1    4800 2250
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:R R?
 U 1 1 6026B464
-P 3200 2700
-F 0 "R?" H 3270 2746 50  0000 L CNN
-F 1 "R" H 3270 2655 50  0000 L CNN
-F 2 "" V 3130 2700 50  0001 C CNN
-F 3 "~" H 3200 2700 50  0001 C CNN
-	1    3200 2700
+P 4450 2600
+F 0 "R?" H 4520 2646 50  0000 L CNN
+F 1 "R" H 4520 2555 50  0000 L CNN
+F 2 "" V 4380 2600 50  0001 C CNN
+F 3 "~" H 4450 2600 50  0001 C CNN
+	1    4450 2600
 	1    0    0    -1  
 $EndComp
 $Comp
 L Device:R R?
 U 1 1 6026CB47
-P 3200 3100
-F 0 "R?" H 3270 3146 50  0000 L CNN
-F 1 "R" H 3270 3055 50  0000 L CNN
-F 2 "" V 3130 3100 50  0001 C CNN
-F 3 "~" H 3200 3100 50  0001 C CNN
-	1    3200 3100
+P 4450 3000
+F 0 "R?" H 4520 3046 50  0000 L CNN
+F 1 "R" H 4520 2955 50  0000 L CNN
+F 2 "" V 4380 3000 50  0001 C CNN
+F 3 "~" H 4450 3000 50  0001 C CNN
+	1    4450 3000
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	3000 2550 3200 2550
-Connection ~ 3200 2550
+	4250 2450 4450 2450
 Wire Wire Line
-	3200 2550 3550 2550
-Connection ~ 3550 2550
+	4450 2100 4800 2100
+Connection ~ 4800 2100
 Wire Wire Line
-	3000 2650 3000 2900
+	4250 2550 4250 2800
 Wire Wire Line
-	3000 2900 3200 2900
+	4250 2800 4450 2800
 Wire Wire Line
-	3200 2900 3200 2850
+	4450 2800 4450 2750
 Wire Wire Line
-	3200 2900 3200 2950
-Connection ~ 3200 2900
+	4450 2800 4450 2850
+Connection ~ 4450 2800
 Wire Wire Line
-	3200 3250 3200 3300
+	4450 3150 4450 3200
 Wire Wire Line
-	3550 2850 3550 2900
+	4800 2400 4800 2450
 $Comp
 L power:GND #PWR?
 U 1 1 602874B9
-P 3200 3300
-F 0 "#PWR?" H 3200 3050 50  0001 C CNN
-F 1 "GND" H 3205 3127 50  0000 C CNN
-F 2 "" H 3200 3300 50  0001 C CNN
-F 3 "" H 3200 3300 50  0001 C CNN
-	1    3200 3300
+P 4450 3200
+F 0 "#PWR?" H 4450 2950 50  0001 C CNN
+F 1 "GND" H 4455 3027 50  0000 C CNN
+F 2 "" H 4450 3200 50  0001 C CNN
+F 3 "" H 4450 3200 50  0001 C CNN
+	1    4450 3200
 	1    0    0    -1  
 $EndComp
 $Comp
 L power:GND #PWR?
 U 1 1 60289F31
-P 3550 2900
-F 0 "#PWR?" H 3550 2650 50  0001 C CNN
-F 1 "GND" H 3555 2727 50  0000 C CNN
-F 2 "" H 3550 2900 50  0001 C CNN
-F 3 "" H 3550 2900 50  0001 C CNN
-	1    3550 2900
-	1    0    0    -1  
-$EndComp
-$Comp
-L power:+3.3V #PWR?
-U 1 1 6028EF6B
-P 3550 2450
-F 0 "#PWR?" H 3550 2300 50  0001 C CNN
-F 1 "+3.3V" H 3565 2623 50  0000 C CNN
-F 2 "" H 3550 2450 50  0001 C CNN
-F 3 "" H 3550 2450 50  0001 C CNN
-	1    3550 2450
+P 4800 2450
+F 0 "#PWR?" H 4800 2200 50  0001 C CNN
+F 1 "GND" H 4805 2277 50  0000 C CNN
+F 2 "" H 4800 2450 50  0001 C CNN
+F 3 "" H 4800 2450 50  0001 C CNN
+	1    4800 2450
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	3550 2450 3550 2550
-Text Notes 3500 3500 0    50   ~ 0
-Vout=Vref(1+R1/R2)   (Vref = 1.24V) => \n1.9/1.24-1=0.5322=R1/R2=> \nR2*0.5322=R1\nNeed to ask about heat and power.
+	4800 2000 4800 2100
+Text Notes 3400 3850 0    50   ~ 0
+Vref(1+R1/R2) =Vout  (Vref = 1.24V) => \n1.24(1+10000/18000)= 1.93.....\nNeed to ask about heat and power.
 $Comp
 L Device:C C?
 U 1 1 600A3108
@@ -860,4 +792,429 @@ F 3 "" H 6900 2600 50  0001 C CNN
 	1    6900 2600
 	1    0    0    -1  
 $EndComp
+Text Label 1800 950  0    50   ~ 0
+100mA
+$Comp
+L power:GND #PWR?
+U 1 1 600CDA78
+P 2500 6750
+F 0 "#PWR?" H 2500 6500 50  0001 C CNN
+F 1 "GND" H 2505 6577 50  0000 C CNN
+F 2 "" H 2500 6750 50  0001 C CNN
+F 3 "" H 2500 6750 50  0001 C CNN
+	1    2500 6750
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2500 6750 2550 6750
+$Comp
+L lab1:PWM3389 U?
+U 1 1 60265B7D
+P 3000 6250
+F 0 "U?" H 3000 6675 50  0000 C CNN
+F 1 "PWM3389" H 3000 6584 50  0000 C CNN
+F 2 "" H 3000 6700 50  0001 C CNN
+F 3 "" H 3000 6700 50  0001 C CNN
+	1    3000 6250
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
+U 1 1 600F86E3
+P 2800 5600
+F 0 "#PWR?" H 2800 5350 50  0001 C CNN
+F 1 "GND" H 2805 5427 50  0000 C CNN
+F 2 "" H 2800 5600 50  0001 C CNN
+F 3 "" H 2800 5600 50  0001 C CNN
+	1    2800 5600
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2600 5600 2800 5600
+Connection ~ 2800 5600
+Wire Wire Line
+	2800 5600 3000 5600
+$Comp
+L Device:C C?
+U 1 1 60107FE9
+P 1850 6600
+F 0 "C?" H 1965 6646 50  0000 L CNN
+F 1 "1μF" H 1965 6555 50  0000 L CNN
+F 2 "" H 1888 6450 50  0001 C CNN
+F 3 "~" H 1850 6600 50  0001 C CNN
+	1    1850 6600
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C?
+U 1 1 60107FEF
+P 1450 6600
+F 0 "C?" H 1565 6646 50  0000 L CNN
+F 1 "1μF" H 1565 6555 50  0000 L CNN
+F 2 "" H 1488 6450 50  0001 C CNN
+F 3 "~" H 1450 6600 50  0001 C CNN
+	1    1450 6600
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
+U 1 1 60107FF5
+P 1650 6750
+F 0 "#PWR?" H 1650 6500 50  0001 C CNN
+F 1 "GND" H 1655 6577 50  0000 C CNN
+F 2 "" H 1650 6750 50  0001 C CNN
+F 3 "" H 1650 6750 50  0001 C CNN
+	1    1650 6750
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1450 6750 1650 6750
+Connection ~ 1650 6750
+Wire Wire Line
+	1650 6750 1850 6750
+Wire Wire Line
+	1450 6450 1850 6450
+$Comp
+L Device:C C?
+U 1 1 6010C2FE
+P 2200 5800
+F 0 "C?" H 2315 5846 50  0000 L CNN
+F 1 "1μF" H 2315 5755 50  0000 L CNN
+F 2 "" H 2238 5650 50  0001 C CNN
+F 3 "~" H 2200 5800 50  0001 C CNN
+	1    2200 5800
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C?
+U 1 1 6010C304
+P 1800 5800
+F 0 "C?" H 1915 5846 50  0000 L CNN
+F 1 "1μF" H 1915 5755 50  0000 L CNN
+F 2 "" H 1838 5650 50  0001 C CNN
+F 3 "~" H 1800 5800 50  0001 C CNN
+	1    1800 5800
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
+U 1 1 6010C30A
+P 2000 5950
+F 0 "#PWR?" H 2000 5700 50  0001 C CNN
+F 1 "GND" H 2005 5777 50  0000 C CNN
+F 2 "" H 2000 5950 50  0001 C CNN
+F 3 "" H 2000 5950 50  0001 C CNN
+	1    2000 5950
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1800 5950 2000 5950
+Connection ~ 2000 5950
+Wire Wire Line
+	2000 5950 2200 5950
+Wire Wire Line
+	1800 5650 2200 5650
+$Comp
+L Device:C C?
+U 1 1 60111179
+P 4250 5750
+F 0 "C?" H 4365 5796 50  0000 L CNN
+F 1 "1μF" H 4365 5705 50  0000 L CNN
+F 2 "" H 4288 5600 50  0001 C CNN
+F 3 "~" H 4250 5750 50  0001 C CNN
+	1    4250 5750
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C?
+U 1 1 6011117F
+P 3850 5750
+F 0 "C?" H 3965 5796 50  0000 L CNN
+F 1 "1μF" H 3965 5705 50  0000 L CNN
+F 2 "" H 3888 5600 50  0001 C CNN
+F 3 "~" H 3850 5750 50  0001 C CNN
+	1    3850 5750
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
+U 1 1 60111185
+P 4050 5900
+F 0 "#PWR?" H 4050 5650 50  0001 C CNN
+F 1 "GND" H 4055 5727 50  0000 C CNN
+F 2 "" H 4050 5900 50  0001 C CNN
+F 3 "" H 4050 5900 50  0001 C CNN
+	1    4050 5900
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3850 5900 4050 5900
+Connection ~ 4050 5900
+Wire Wire Line
+	4050 5900 4250 5900
+Wire Wire Line
+	3850 5600 4250 5600
+$Comp
+L Device:R R?
+U 1 1 60124B5A
+P 3500 5750
+F 0 "R?" H 3570 5796 50  0000 L CNN
+F 1 "13Ω" H 3570 5705 50  0000 L CNN
+F 2 "" V 3430 5750 50  0001 C CNN
+F 3 "~" H 3500 5750 50  0001 C CNN
+	1    3500 5750
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:R R?
+U 1 1 601285C0
+P 3850 6550
+F 0 "R?" H 3920 6596 50  0000 L CNN
+F 1 "10kΩ" H 3920 6505 50  0000 L CNN
+F 2 "" V 3780 6550 50  0001 C CNN
+F 3 "~" H 3850 6550 50  0001 C CNN
+	1    3850 6550
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+1.9V #PWR?
+U 1 1 6013BBDD
+P 4800 2000
+F 0 "#PWR?" H 4800 1850 50  0001 C CNN
+F 1 "+1.9V" H 4815 2173 50  0000 C CNN
+F 2 "" H 4800 2000 50  0001 C CNN
+F 3 "" H 4800 2000 50  0001 C CNN
+	1    4800 2000
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C?
+U 1 1 600DE1C6
+P 3000 5450
+F 0 "C?" H 3115 5496 50  0000 L CNN
+F 1 "4.7μF/10V" H 3115 5405 50  0000 L CNN
+F 2 "" H 3038 5300 50  0001 C CNN
+F 3 "~" H 3000 5450 50  0001 C CNN
+	1    3000 5450
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C C?
+U 1 1 600DB4DB
+P 2600 5450
+F 0 "C?" H 2715 5496 50  0000 L CNN
+F 1 "10μF" H 2715 5405 50  0000 L CNN
+F 2 "" H 2638 5300 50  0001 C CNN
+F 3 "~" H 2600 5450 50  0001 C CNN
+	1    2600 5450
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2500 6250 2550 6250
+Wire Wire Line
+	2500 6250 2500 5300
+Wire Wire Line
+	2500 5300 2600 5300
+Connection ~ 2600 5300
+Wire Wire Line
+	2600 5300 3000 5300
+Wire Wire Line
+	2550 6350 2350 6350
+Wire Wire Line
+	2350 6350 2350 5650
+Wire Wire Line
+	2350 5650 2200 5650
+Connection ~ 2200 5650
+Wire Wire Line
+	1800 5650 1800 5600
+Connection ~ 1800 5650
+$Comp
+L power:+1.9V #PWR?
+U 1 1 6017F792
+P 1800 5600
+F 0 "#PWR?" H 1800 5450 50  0001 C CNN
+F 1 "+1.9V" H 1815 5773 50  0000 C CNN
+F 2 "" H 1800 5600 50  0001 C CNN
+F 3 "" H 1800 5600 50  0001 C CNN
+	1    1800 5600
+	1    0    0    -1  
+$EndComp
+Connection ~ 1850 6450
+Wire Wire Line
+	1450 6450 1450 6400
+Connection ~ 1450 6450
+$Comp
+L power:+3.3V #PWR?
+U 1 1 60195A26
+P 1450 6400
+F 0 "#PWR?" H 1450 6250 50  0001 C CNN
+F 1 "+3.3V" H 1465 6573 50  0000 C CNN
+F 2 "" H 1450 6400 50  0001 C CNN
+F 3 "" H 1450 6400 50  0001 C CNN
+	1    1450 6400
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3450 6150 3500 6150
+Connection ~ 3850 5600
+$Comp
+L power:+1.9V #PWR?
+U 1 1 601A7A88
+P 4250 5550
+F 0 "#PWR?" H 4250 5400 50  0001 C CNN
+F 1 "+1.9V" H 4265 5723 50  0000 C CNN
+F 2 "" H 4250 5550 50  0001 C CNN
+F 3 "" H 4250 5550 50  0001 C CNN
+	1    4250 5550
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4250 5550 4250 5600
+Connection ~ 4250 5600
+Wire Wire Line
+	3500 5600 3850 5600
+Wire Wire Line
+	3500 5900 3500 6150
+Wire Wire Line
+	1850 6450 2550 6450
+Wire Wire Line
+	3450 6450 3700 6450
+Wire Wire Line
+	3850 6400 3850 6350
+$Comp
+L power:+3.3V #PWR?
+U 1 1 6022F7BC
+P 3850 6350
+F 0 "#PWR?" H 3850 6200 50  0001 C CNN
+F 1 "+3.3V" H 3865 6523 50  0000 C CNN
+F 2 "" H 3850 6350 50  0001 C CNN
+F 3 "" H 3850 6350 50  0001 C CNN
+	1    3850 6350
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:TestPoint TP?
+U 1 1 60234DCF
+P 1150 3000
+F 0 "TP?" H 1208 3118 50  0000 L CNN
+F 1 "Test 5V" H 1208 3027 50  0000 L CNN
+F 2 "" H 1350 3000 50  0001 C CNN
+F 3 "~" H 1350 3000 50  0001 C CNN
+	1    1150 3000
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+5V #PWR?
+U 1 1 602971EE
+P 1000 3000
+F 0 "#PWR?" H 1000 2850 50  0001 C CNN
+F 1 "+5V" H 1015 3173 50  0000 C CNN
+F 2 "" H 1000 3000 50  0001 C CNN
+F 3 "" H 1000 3000 50  0001 C CNN
+	1    1000 3000
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+3.3V #PWR?
+U 1 1 6029BF55
+P 1000 3300
+F 0 "#PWR?" H 1000 3150 50  0001 C CNN
+F 1 "+3.3V" H 1015 3473 50  0000 C CNN
+F 2 "" H 1000 3300 50  0001 C CNN
+F 3 "" H 1000 3300 50  0001 C CNN
+	1    1000 3300
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+1.9V #PWR?
+U 1 1 602A0D20
+P 1000 3600
+F 0 "#PWR?" H 1000 3450 50  0001 C CNN
+F 1 "+1.9V" H 1015 3773 50  0000 C CNN
+F 2 "" H 1000 3600 50  0001 C CNN
+F 3 "" H 1000 3600 50  0001 C CNN
+	1    1000 3600
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR?
+U 1 1 602A594F
+P 1000 3850
+F 0 "#PWR?" H 1000 3600 50  0001 C CNN
+F 1 "GND" H 1005 3677 50  0000 C CNN
+F 2 "" H 1000 3850 50  0001 C CNN
+F 3 "" H 1000 3850 50  0001 C CNN
+	1    1000 3850
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:TestPoint TP?
+U 1 1 602AF417
+P 1150 3300
+F 0 "TP?" H 1208 3418 50  0000 L CNN
+F 1 "Test 3.3V" H 1208 3327 50  0000 L CNN
+F 2 "" H 1350 3300 50  0001 C CNN
+F 3 "~" H 1350 3300 50  0001 C CNN
+	1    1150 3300
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:TestPoint TP?
+U 1 1 602B4100
+P 1150 3600
+F 0 "TP?" H 1208 3718 50  0000 L CNN
+F 1 "Test 1.9V" H 1208 3627 50  0000 L CNN
+F 2 "" H 1350 3600 50  0001 C CNN
+F 3 "~" H 1350 3600 50  0001 C CNN
+	1    1150 3600
+	1    0    0    -1  
+$EndComp
+$Comp
+L Connector:TestPoint TP?
+U 1 1 602B8EED
+P 1150 3850
+F 0 "TP?" H 1208 3968 50  0000 L CNN
+F 1 "Test GND" H 1208 3877 50  0000 L CNN
+F 2 "" H 1350 3850 50  0001 C CNN
+F 3 "~" H 1350 3850 50  0001 C CNN
+	1    1150 3850
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	1000 3000 1150 3000
+Wire Wire Line
+	1000 3300 1150 3300
+Wire Wire Line
+	1000 3600 1150 3600
+Wire Wire Line
+	1150 3850 1000 3850
+$Comp
+L Connector:TestPoint TP?
+U 1 1 602E4D25
+P 10450 2150
+F 0 "TP?" H 10508 2268 50  0000 L CNN
+F 1 "Test 3.3V" H 10508 2177 50  0000 L CNN
+F 2 "" H 10650 2150 50  0001 C CNN
+F 3 "~" H 10650 2150 50  0001 C CNN
+	1    10450 2150
+	1    0    0    -1  
+$EndComp
+Connection ~ 10200 1650
+Connection ~ 10550 1650
+Wire Wire Line
+	10550 1650 10200 1650
+$Comp
+L Connector:Conn_01x01_Male J?
+U 1 1 602F84E9
+P 4650 2800
+F 0 "J?" H 4622 2732 50  0000 R CNN
+F 1 "TestPoint" H 4622 2823 50  0000 R CNN
+F 2 "" H 4650 2800 50  0001 C CNN
+F 3 "~" H 4650 2800 50  0001 C CNN
+	1    4650 2800
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	4450 2100 4450 2450
+Connection ~ 4450 2450
 $EndSCHEMATC