diff --git a/README.md b/README.md
index 20d3eb7..a068286 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,18 @@ Pre-requisites
- "Google Repository" from the Android SDK Manager
- Google Cloud project with Cloud Vision API enabled
- Firebase database
+- The following individual components:
+ - 1 push button
+ - 1 resistor
+ - jumper wires
+ - 1 breadboard
+Schematics
+----------
+
+
+
Setup and Build
===============
@@ -58,11 +68,6 @@ To run the `companionApp` module on your Android phone:
2. Verify that you see a new annotated picture everytime you push the button
-Schematics
-----------
-
-
-
License
-------
diff --git a/app/src/main/java/com/example/androidthings/doorbell/DoorbellActivity.java b/app/src/main/java/com/example/androidthings/doorbell/DoorbellActivity.java
index 6ce8676..9e220bc 100644
--- a/app/src/main/java/com/example/androidthings/doorbell/DoorbellActivity.java
+++ b/app/src/main/java/com/example/androidthings/doorbell/DoorbellActivity.java
@@ -74,7 +74,7 @@ public class DoorbellActivity extends Activity {
/**
* The GPIO pin to activate to listen for button presses.
*/
- private final String BUTTON_GPIO_PIN = "BCM22";
+ private final String BUTTON_GPIO_PIN = "BCM21";
@Override
diff --git a/sample_schematics.png b/sample_schematics.png
deleted file mode 100644
index a673ea1..0000000
Binary files a/sample_schematics.png and /dev/null differ
diff --git a/schematics.png b/schematics.png
new file mode 100644
index 0000000..95d0463
--- /dev/null
+++ b/schematics.png
@@ -0,0 +1,83 @@
+
+android-dot-devsite.googleplex.com - MOMA Single Sign On
+
+
+
+
+ |
+ |
+
+
+
+
+Debug
+
+Stubby HOTP: 0ms
+phab12
+
\ No newline at end of file
+
