diff --git a/AC-LED-Control/AC-LED-Control-cache.lib b/AC-LED-Control/AC-LED-Control-cache.lib
index da3b17b..1101e9c 100644
--- a/AC-LED-Control/AC-LED-Control-cache.lib
+++ b/AC-LED-Control/AC-LED-Control-cache.lib
@@ -116,6 +116,42 @@ X P4 4 -200 -150 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# FOD814-D
+#
+DEF FOD814-D U 0 40 Y Y 1 F N
+F0 "U" 0 -250 60 H V C CNN
+F1 "FOD814-D" -50 450 60 H V C CNN
+F2 "" -50 0 60 H V C CNN
+F3 "" -50 0 60 H V C CNN
+DRAW
+S -400 400 350 -200 0 1 0 N
+P 2 0 1 0  -300 50  -200 50 N
+P 2 0 1 0  -250 -50  -250 -100 N
+P 2 0 1 0  -250 50  -250 -50 N
+P 2 0 1 0  -250 150  -250 250 N
+P 2 0 1 0  -250 250  -250 300 N
+P 2 0 1 0  -150 150  -50 150 N
+P 2 0 1 0  -100 50  -100 -50 N
+P 2 0 1 0  50 100  0 150 N
+P 2 0 1 0  100 150  100 50 N
+P 2 0 1 0  100 200  100 0 N
+P 2 0 1 0  150 -100  350 -100 N
+P 2 0 1 0  250 -100  200 -150 N
+P 2 0 1 0  250 -100  200 -50 N
+P 3 0 1 0  -100 -50  -100 -100  -400 -100 N
+P 3 0 1 0  -100 150  -100 300  -400 300 N
+P 3 0 1 0  -50 100  50 100  0 50 N
+P 3 0 1 0  100 50  150 0  150 -100 N
+P 4 0 1 0  -300 150  -200 150  -250 50  -300 150 N
+P 4 0 1 0  -150 50  -100 150  -50 50  -150 50 N
+P 4 0 1 0  100 150  150 200  150 300  350 300 N
+X AC 1 -400 300 200 R 50 50 1 1 I N
+X AC 2 -400 -100 200 R 50 50 1 1 I N
+X EMITTER 3 350 -100 200 L 50 50 1 1 I N
+X COLLECTOR 4 350 300 200 L 50 50 1 1 I N
+ENDDRAW
+ENDDEF
+#
 # GND
 #
 DEF GND #PWR 0 0 Y Y 1 F P
diff --git a/AC-LED-Control/AC-LED-Control.pro b/AC-LED-Control/AC-LED-Control.pro
index fd46c31..3dcfc54 100644
--- a/AC-LED-Control/AC-LED-Control.pro
+++ b/AC-LED-Control/AC-LED-Control.pro
@@ -1,4 +1,4 @@
-update=Tue 10 Jul 2018 04:04:44 PM MDT
+update=Wed 11 Jul 2018 10:13:06 AM MDT
 version=1
 last_client=kicad
 [pcbnew]
@@ -60,3 +60,4 @@ LibName28=contrib
 LibName29=valves
 LibName30=digikey-UltraLibrarian/KiCAD/symbols
 LibName31=stm32f030f4p6
+LibName32=fod814-d
diff --git a/AC-LED-Control/AC-LED-Control.sch b/AC-LED-Control/AC-LED-Control.sch
index 5b6196f..98afb8b 100644
--- a/AC-LED-Control/AC-LED-Control.sch
+++ b/AC-LED-Control/AC-LED-Control.sch
@@ -30,6 +30,7 @@ LIBS:contrib
 LIBS:valves
 LIBS:symbols
 LIBS:stm32f030f4p6
+LIBS:fod814-d
 LIBS:AC-LED-Control-cache
 EELAYER 25 0
 EELAYER END
@@ -423,7 +424,7 @@ NoConn ~ 2850 1700
 NoConn ~ 1550 1100
 NoConn ~ 1550 1200
 Text Label 1550 1300 2    60   ~ 0
-STWM_~RST
+STM_~RST
 Text Label 3150 4050 0    60   ~ 0
 STM_~RST
 Wire Wire Line
@@ -556,4 +557,97 @@ Wire Notes Line
 	1950 6550 800  6550
 Wire Notes Line
 	800  6550 800  5750
+Text Notes 4950 4500 0    60   ~ 0
+Zero Cross Detector
+$Comp
+L R R?
+U 1 1 5B46350A
+P 5700 4900
+F 0 "R?" V 5780 4900 50  0000 C CNN
+F 1 "16K" V 5700 4900 50  0000 C CNN
+F 2 "" V 5630 4900 50  0000 C CNN
+F 3 "" H 5700 4900 50  0000 C CNN
+	1    5700 4900
+	0    1    1    0   
+$EndComp
+$Comp
+L FOD814-D U?
+U 1 1 5B46379C
+P 6250 5200
+F 0 "U?" H 6250 4950 60  0000 C CNN
+F 1 "FOD814-D" H 6200 5650 60  0000 C CNN
+F 2 "" H 6200 5200 60  0000 C CNN
+F 3 "" H 6200 5200 60  0000 C CNN
+	1    6250 5200
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R?
+U 1 1 5B463817
+P 5700 5300
+F 0 "R?" V 5780 5300 50  0000 C CNN
+F 1 "16K" V 5700 5300 50  0000 C CNN
+F 2 "" V 5630 5300 50  0000 C CNN
+F 3 "" H 5700 5300 50  0000 C CNN
+	1    5700 5300
+	0    1    1    0   
+$EndComp
+Wire Wire Line
+	5550 4900 5200 4900
+Wire Wire Line
+	5550 5300 5200 5300
+Text Label 5200 4900 2    60   ~ 0
+AC_H
+Text Label 5200 5300 2    60   ~ 0
+AC_N
+Wire Wire Line
+	6600 4900 7100 4900
+$Comp
+L R R?
+U 1 1 5B463CCD
+P 6850 4750
+F 0 "R?" V 6930 4750 50  0000 C CNN
+F 1 "2K" V 6850 4750 50  0000 C CNN
+F 2 "" V 6780 4750 50  0000 C CNN
+F 3 "" H 6850 4750 50  0000 C CNN
+	1    6850 4750
+	1    0    0    -1  
+$EndComp
+$Comp
+L +3V3 #PWR?
+U 1 1 5B463D3E
+P 6850 4600
+F 0 "#PWR?" H 6850 4450 50  0001 C CNN
+F 1 "+3V3" H 6850 4740 50  0000 C CNN
+F 2 "" H 6850 4600 50  0000 C CNN
+F 3 "" H 6850 4600 50  0000 C CNN
+	1    6850 4600
+	1    0    0    -1  
+$EndComp
+Connection ~ 6850 4900
+Text Label 7100 4900 0    60   ~ 0
+ZERO_CROSS
+Wire Wire Line
+	6600 5300 6850 5300
+Wire Wire Line
+	6850 5300 6850 5400
+$Comp
+L GND #PWR?
+U 1 1 5B464157
+P 6850 5400
+F 0 "#PWR?" H 6850 5150 50  0001 C CNN
+F 1 "GND" H 6850 5250 50  0000 C CNN
+F 2 "" H 6850 5400 50  0000 C CNN
+F 3 "" H 6850 5400 50  0000 C CNN
+	1    6850 5400
+	1    0    0    -1  
+$EndComp
+Wire Notes Line
+	4950 4400 7700 4400
+Wire Notes Line
+	7700 4400 7700 5600
+Wire Notes Line
+	7700 5600 4950 5600
+Wire Notes Line
+	4950 5600 4950 4400
 $EndSCHEMATC
diff --git a/AC-LED-Control/notes.md b/AC-LED-Control/notes.md
index 26ae4d8..3f23b3d 100644
--- a/AC-LED-Control/notes.md
+++ b/AC-LED-Control/notes.md
@@ -46,3 +46,11 @@ QH' is an output pin, it clocks out the value in QH.
 STM32F030 I2C Pins:
 - PA9: I2C1_SCL
 - PA10: I2C1_SDA
+
+How do I determine the I2C address?
+- I can hardcode it (annoying to change, have to have seperate binaries)
+- I can listen on I2C...
+
+I know what to do. Have a default address to listen to, but you can change it over I2C. It stores this address in EEPROM so it persists across reflashes.
+
+Easy-peasy.