diff --git a/BOM.xlsx b/BOM.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..c2d4b4fe83ff57811cc955952aee43de23219b5d
Binary files /dev/null and b/BOM.xlsx differ
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fa09f3d443ec1fff0fdeea6a7da6316e0a904929..82a06bdcc14c2f4be765a886f2ce3aacc7211a3b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,2 +1,4 @@
-Whole group: Initial eschema
-Carl: Added TODO.md and CHANGELOG.md according to assignment instructions.
\ No newline at end of file
+Whole group: Initial eschema<br>
+Carl: Added TODO.md and CHANGELOG.md according to assignment instructions.<br>
+Carl + Alba: Purchase list BOM.xlsx. <br>
+Otto: PCB design. <br>
\ No newline at end of file
diff --git a/kicad/fp-info-cache b/kicad/fp-info-cache
index 78ec0ea325a25e8997d2b48f383440d86720ba5b..5de680ab9a2f67d1debc6287f612ddf3b0022690 100644
--- a/kicad/fp-info-cache
+++ b/kicad/fp-info-cache
@@ -1,3 +1,4 @@
+<<<<<<< HEAD
 19099307843104334
 Battery
 BatteryHolder_Bulgin_BX0036_1xC
@@ -83026,6 +83027,9 @@ varistor SIOV
 0
 2
 2
+=======
+3225411375060
+>>>>>>> 1b1f6167b2f0255b4b7074daec4af4d1f2225aa5
 pmw
 D2F-L2
 
diff --git a/kicad/mouse.sch b/kicad/mouse.sch
index 34c2a9ae403c05e5e6b640f01880e5e2d7c568f5..438e0f6afaece8404eb2295923d3b363a71e923e 100644
--- a/kicad/mouse.sch
+++ b/kicad/mouse.sch
@@ -1411,10 +1411,17 @@ NoConn ~ 6350 5000
 NoConn ~ 4950 4200
 NoConn ~ 4950 4100
 $Comp
+<<<<<<< HEAD
 L Connector:Conn_01x05_Male Mextras1
 U 1 1 601D4B07
 P 8300 5300
 F 0 "Mextras1" H 8408 5681 50  0000 C CNN
+=======
+L Connector:Conn_01x05_Male J3
+U 1 1 601D4B07
+P 8300 5300
+F 0 "J3" H 8408 5681 50  0000 C CNN
+>>>>>>> 1b1f6167b2f0255b4b7074daec4af4d1f2225aa5
 F 1 "Conn_01x05_Male" H 8408 5590 50  0000 C CNN
 F 2 "Connector_PinHeader_2.00mm:PinHeader_1x05_P2.00mm_Vertical" H 8300 5300 50  0001 C CNN
 F 3 "~" H 8300 5300 50  0001 C CNN
@@ -1422,10 +1429,17 @@ F 3 "~" H 8300 5300 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
+<<<<<<< HEAD
 L Connector:Conn_01x05_Male USB1
 U 1 1 601F6908
 P 1200 1700
 F 0 "USB1" H 1308 2081 50  0000 C CNN
+=======
+L Connector:Conn_01x05_Male J1
+U 1 1 601F6908
+P 1200 1700
+F 0 "J1" H 1308 2081 50  0000 C CNN
+>>>>>>> 1b1f6167b2f0255b4b7074daec4af4d1f2225aa5
 F 1 "Conn_01x05_Male" H 1308 1990 50  0000 C CNN
 F 2 "Connector_PinHeader_2.00mm:PinHeader_1x05_P2.00mm_Vertical" H 1200 1700 50  0001 C CNN
 F 3 "~" H 1200 1700 50  0001 C CNN
@@ -1449,6 +1463,37 @@ F 3 "~" H 9850 5350 50  0001 C CNN
 	0    1    1    0   
 $EndComp
 $Comp
+<<<<<<< HEAD
+=======
+L Device:C_Small C25
+U 1 1 6023EAE1
+P 10450 5150
+F 0 "C25" H 10542 5196 50  0000 L CNN
+F 1 "100n" H 10542 5105 50  0000 L CNN
+F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder" H 10450 5150 50  0001 C CNN
+F 3 "~" H 10450 5150 50  0001 C CNN
+	1    10450 5150
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	10450 5050 10450 4950
+Wire Wire Line
+	10450 4950 9850 4950
+$Comp
+L power:GND #PWR0141
+U 1 1 6023EAEA
+P 10450 5600
+F 0 "#PWR0141" H 10450 5350 50  0001 C CNN
+F 1 "GND" H 10455 5427 50  0000 C CNN
+F 2 "" H 10450 5600 50  0001 C CNN
+F 3 "" H 10450 5600 50  0001 C CNN
+	1    10450 5600
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	10450 5600 10450 5250
+$Comp
+>>>>>>> 1b1f6167b2f0255b4b7074daec4af4d1f2225aa5
 L power:GND #PWR0142
 U 1 1 6023EAF1
 P 9850 5600
@@ -1485,6 +1530,37 @@ F 3 "~" H 9850 4050 50  0001 C CNN
 	0    1    1    0   
 $EndComp
 $Comp
+<<<<<<< HEAD
+=======
+L Device:C_Small C24
+U 1 1 60249EAA
+P 10450 3850
+F 0 "C24" H 10542 3896 50  0000 L CNN
+F 1 "100n" H 10542 3805 50  0000 L CNN
+F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder" H 10450 3850 50  0001 C CNN
+F 3 "~" H 10450 3850 50  0001 C CNN
+	1    10450 3850
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	10450 3750 10450 3650
+Wire Wire Line
+	10450 3650 9850 3650
+$Comp
+L power:GND #PWR0143
+U 1 1 60249EB3
+P 10450 4300
+F 0 "#PWR0143" H 10450 4050 50  0001 C CNN
+F 1 "GND" H 10455 4127 50  0000 C CNN
+F 2 "" H 10450 4300 50  0001 C CNN
+F 3 "" H 10450 4300 50  0001 C CNN
+	1    10450 4300
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	10450 4300 10450 3950
+$Comp
+>>>>>>> 1b1f6167b2f0255b4b7074daec4af4d1f2225aa5
 L power:GND #PWR0144
 U 1 1 60249EBA
 P 9850 4300
@@ -1536,6 +1612,10 @@ F 3 "" H 8650 5550 50  0001 C CNN
 	1    8650 5550
 	1    0    0    -1  
 $EndComp
+<<<<<<< HEAD
+=======
+Connection ~ 9850 4950
+>>>>>>> 1b1f6167b2f0255b4b7074daec4af4d1f2225aa5
 Text GLabel 4950 4900 0    50   Input ~ 0
 SCLK
 Text GLabel 4950 5100 0    50   Output ~ 0