Add a LED for debugging and fix some errors

weather-sensor/weather_station_sensor-cache.lib

 ENDDRAW
 ENDDEF
 #
+# Device_LED
+#
+DEF Device_LED D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "Device_LED" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ LED*
+ LED_SMD:*
+ LED_THT:*
+$ENDFPLIST
+DRAW
+P 2 0 1 8 -50 -50 -50 50 N
+P 2 0 1 0 -50 0 50 0 N
+P 4 0 1 8 50 -50 50 50 -50 0 50 -50 N
+P 5 0 1 0 -120 -30 -180 -90 -150 -90 -180 -90 -180 -60 N
+P 5 0 1 0 -70 -30 -130 -90 -100 -90 -130 -90 -130 -60 N
+X K 1 -150 0 100 R 50 50 1 1 P
+X A 2 150 0 100 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Device_Q_NMOS_GSD
 #
 DEF Device_Q_NMOS_GSD Q 0 0 Y N 1 F N

weather-sensor/weather_station_sensor.sch

 	4350 2500 4350 2600
 NoConn ~ 4850 2700
 NoConn ~ 4850 2800
-NoConn ~ 6050 4500
 Text GLabel 6150 4700 2    50   Input ~ 0
 IRQ
 Wire Wire Line
 	1    9350 5300
 	1    0    0    -1  
 $EndComp
-Text Notes 1250 3050 0    50   ~ 0
-TODO: add some GPIOs that can be accessed via SMD pads
 $Comp
 L Device:C C4
 U 1 1 5E817D49
 	1    7700 5700
 	1    0    0    -1  
 $EndComp
+$Comp
+L Device:LED D?
+U 1 1 5E7DCBE7
+P 7000 1200
+F 0 "D?" H 6993 1416 50  0000 C CNN
+F 1 "150060SS75000" H 6993 1325 50  0000 C CNN
+F 2 "Diodes_SMD:D_0603" H 7000 1200 50  0001 C CNN
+F 3 "https://katalog.we-online.de/led/datasheet/150060SS75000.pdf" H 7000 1200 50  0001 C CNN
+F 4 "732-4979-1-ND" H 7000 1200 50  0001 C CNN "Digikey PN"
+F 5 "https://www.digikey.de/product-detail/de/w%C3%BCrth-elektronik/150060SS75000/732-4979-1-ND/448990" H 7000 1200 50  0001 C CNN "Digikey link"
+	1    7000 1200
+	1    0    0    -1  
+$EndComp
+Text GLabel 7250 1200 2    50   Input ~ 0
+LED
+Wire Wire Line
+	7250 1200 7150 1200
+$Comp
+L Device:R R?
+U 1 1 5E7C7865
+P 6550 1200
+F 0 "R?" V 6343 1200 50  0000 C CNN
+F 1 "47" V 6434 1200 50  0000 C CNN
+F 2 "Resistors_SMD:R_0603_HandSoldering" V 6480 1200 50  0001 C CNN
+F 3 "~" H 6550 1200 50  0001 C CNN
+	1    6550 1200
+	0    1    1    0   
+$EndComp
+Wire Wire Line
+	6700 1200 6850 1200
+$Comp
+L power:GND #PWR?
+U 1 1 5E7CCDAC
+P 6300 1200
+F 0 "#PWR?" H 6300 950 50  0001 C CNN
+F 1 "GND" H 6305 1027 50  0000 C CNN
+F 2 "" H 6300 1200 50  0001 C CNN
+F 3 "" H 6300 1200 50  0001 C CNN
+	1    6300 1200
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	6300 1200 6400 1200
+Text GLabel 6150 4500 2    50   Input ~ 0
+LED
+Wire Wire Line
+	6050 4500 6150 4500
 $EndSCHEMATC