diff --git a/lib/interrupt.js b/lib/interrupt.js
index f2b3d2c..7629333 100644
--- a/lib/interrupt.js
+++ b/lib/interrupt.js
@@ -19,15 +19,15 @@ class Interrupt extends EventEmitter {
     this.num = pin_number;
     this.hook = opts.hook // will be passed back with the emit
     this.path = GPIO_ROOT_PATH + 'gpio' + this.num + '/'
-    this.edge = opts.edge // default 'falling'
+    this.edge = opts.edge // default 'both'
     this.delay = opts.delay // default = 50
     this.pullup = opts.pullup ? opts.pullup : (num, state) => { return `raspi-gpio set ${num} ${state}` } // default rpi using raspi-gpio
       // this.pullup = (num, state) => { return `raspi-gpio set ${num} ${state}` }
-    this.dbt = opts.debounce ? opts.debounce : 300
+    this.dbt = opts.debounce ? opts.debounce : 200
     this.poller = new Epoll(
       debounce((err, fd, events) => {
         if (err) { this.emit('error', err) } else { this.clear().then(this.emit('fired', this.hook)) }
-      }, this.dbt, true)
+      }, this.dbt, true) // true = leading
     )
   }
 
@@ -42,7 +42,7 @@ class Interrupt extends EventEmitter {
       this._pull(this.num),
       this._export(this.num),
       this._direction('in', this.delay),
-      () => this._edge(this.edge),
+      () => this._edge(this.edge), // TODO determine why these need additional function
       () => this._fd(),
       () => this.clear().then(() => {
         this.start()
@@ -95,7 +95,7 @@ class Interrupt extends EventEmitter {
     this.poller.remove(this.valuefd).close();
   }
 
-  /**************/
+  /*******private methods*********/
 
   _pull(num, state = 'pu') {
     if (this.pullup === 'external') { return Promise.resolve('pull must be set externally') } else {
@@ -131,7 +131,7 @@ class Interrupt extends EventEmitter {
       })
   }
 
-  _edge(edge = 'falling') {
+  _edge(edge = 'both') {
     return fs.writeFile(this.path + 'edge', edge)
       .then(() => {
         return Promise.resolve('edge set')