From 244a3ee1a9d987e52ad12b3cc86ea9e96b617c4b Mon Sep 17 00:00:00 2001
From: Dan Buch <dan@meatballhat.com>
Date: Sun, 29 Dec 2013 22:22:50 -0500
Subject: [PATCH] Adding slightly more reliable switch solution

---
 arduino/MoreReliableSwitch/Makefile           |  1 +
 .../MoreReliableSwitch/MoreReliableSwitch.ino | 27 +++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 120000 arduino/MoreReliableSwitch/Makefile
 create mode 100644 arduino/MoreReliableSwitch/MoreReliableSwitch.ino

diff --git a/arduino/MoreReliableSwitch/Makefile b/arduino/MoreReliableSwitch/Makefile
new file mode 120000
index 0000000..51c7f30
--- /dev/null
+++ b/arduino/MoreReliableSwitch/Makefile
@@ -0,0 +1 @@
+../arduino.mk
\ No newline at end of file
diff --git a/arduino/MoreReliableSwitch/MoreReliableSwitch.ino b/arduino/MoreReliableSwitch/MoreReliableSwitch.ino
new file mode 100644
index 0000000..2b67b72
--- /dev/null
+++ b/arduino/MoreReliableSwitch/MoreReliableSwitch.ino
@@ -0,0 +1,27 @@
+const unsigned int BUTTON_PIN = 7;
+const unsigned int LED_PIN = 13;
+
+int oldButtonState = LOW;
+int ledState = LOW;
+
+void setup() {
+    pinMode(LED_PIN, OUTPUT);
+    pinMode(BUTTON_PIN, INPUT);
+}
+
+void loop() {
+    const int CURRENT_BUTTON_STATE = digitalRead(BUTTON_PIN);
+
+    if (CURRENT_BUTTON_STATE != oldButtonState &&
+        CURRENT_BUTTON_STATE == HIGH) {
+        if (ledState == LOW) {
+            ledState = HIGH;
+        } else {
+            ledState = LOW;
+        }
+
+        digitalWrite(LED_PIN, ledState);
+    }
+
+    oldButtonState = CURRENT_BUTTON_STATE;
+}