diff --git a/.gitignore b/.gitignore
index 22fbdbe..f41585c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 node_modules
 yarn.lock
 package-lock.json
+config.json
+config.default.json
\ No newline at end of file
diff --git a/PrinterDev.js b/PrinterDev.js
index 22982ea..528af3d 100644
--- a/PrinterDev.js
+++ b/PrinterDev.js
@@ -20,8 +20,9 @@ class PrinterDevice {
   }
 
   async connect () {
+    let self = this
     let chkSerial = await new Promise((resolve, reject) => {
-      fs.access(this._serial, err => {
+      fs.access(self._serial, err => {
         if (err) return resolve(false)
         return resolve(true)
       })
@@ -34,13 +35,14 @@ class PrinterDevice {
       this._type = 'console'
     }
     this._printer = new escpos.Printer(this._device)
-    this.openSerial()
+    await this.openSerial()
   }
 
   async openSerial () {
+    let self = this
     if (!this._device || this._type !== 'serial') return
     this._isOpen = await new Promise((resolve, reject) => {
-      this._device.open(err => {
+      self._device.open(err => {
         if (err) return resolve(false)
         return resolve(true)
       })
@@ -88,11 +90,12 @@ class PrinterDevice {
     await this.connect()
     if (!this._isOpen) return false
     this._printer.align('ct')
-    this._printer.size(1, 1)
+    this._printer.size(1, 2)
     this._printer.text('Print Test Page')
     this._printer.align('lt')
     this._printer.size(1, 1)
     this._printer.text('Test Page Content')
+    this._printer.cut(true, this._feed)
     await this.close()
     return true
   }
diff --git a/app.js b/app.js
index 196a63d..2ebcdbe 100644
--- a/app.js
+++ b/app.js
@@ -1,2 +1,5 @@
+// set global env
+process.env.PROJECT_ROOT = __dirname
+
 require('top-level-await')
 require('./server')
diff --git a/config.default.json b/config.default.json
deleted file mode 100644
index 58bd2f0..0000000
--- a/config.default.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-	"uuid":{
-		"main": "930da73d-1b80-4d3e-a8b6-d9b4e7e771bd",
-		"service":{
-			"id":"dd535b71-8f05-4e30-beb0-6fa7ea3dfc3e",
-			"func":{
-				"data":"00000001-8f05-4e30-beb0-6fa7ea3dfc3e"
-			}
-		}
-	},
-	"printer": {
-		"serial": "/dev/ttyUSB0",
-		"cutFeed": 8
-	}
-}
diff --git a/route/install.js b/route/install.js
index e0e058a..1adeb64 100644
--- a/route/install.js
+++ b/route/install.js
@@ -11,9 +11,11 @@ router.use(async (c, n) => {
   c.data = {
     title: 'Printer System Setup'
   }
+  let status = 1
   try {
     await n()
   } catch (err) {
+    status = 0
     if (typeof err === 'string') {
       c.body = err
     } else {
@@ -23,7 +25,7 @@ router.use(async (c, n) => {
 
   if (c.async) {
     c.body = {
-      status: 0,
+      status,
       msg: c.body
     }
   }
@@ -40,7 +42,7 @@ router
         if (err) return resolve([])
         let arr = []
         for (let it of list) {
-          if (it.startsWith('tty')) {
+          if (/^tty[A-z]/.test(it)) {
             arr.push(path.resolve('/dev', it))
           }
         }
@@ -63,7 +65,7 @@ router
     Printer.feed = feed
 
     let status = await Printer.printTestPage()
-
+  
     if (!status) c.body = '測試失敗'
     else c.body = '測試成功'
   })
@@ -83,11 +85,11 @@ router
           main: '',
           service: '',
           characteristic: ''
-        },
-        printer: {
-          serial: '',
-          feed: 8
         }
+      },
+      printer: {
+        serial: '',
+        feed: 8
       }
     }
 
@@ -95,6 +97,23 @@ router
     json.ble.uuid.main = uuid.v4()
     json.ble.uuid.service = uuid.v4()
     json.ble.uuid.characteristic = uuid.v4()
+
+    json.printer.serial = arr.tty
+    json.printer.feed = feed
+
+    let wconfig = await new Promise((resolve, reject) => {
+      fs.writeFile(path.resolve(process.env.PROJECT_ROOT, 'config.json'), JSON.stringify(json, null, 2), {
+        mode: 0664,
+        encoding: 'utf8',
+        flag: 'w'
+      }, err => {
+        if (err) return resolve(false)
+        return resolve(true)
+      })
+    })
+
+    if (!wconfig) throw '設定檔寫入失敗'
+    c.body = '設定檔寫入成功'
   })
 
 module.exports = router
diff --git a/server.js b/server.js
index 755a261..fb8a118 100644
--- a/server.js
+++ b/server.js
@@ -58,4 +58,11 @@ if (router !== null) {
   // set Route
   app.use(router.routes())
   app.use(router.allowedMethods())
+
+  router.put('/reboot_sys', async (c, n) => {
+    setTimeout(function(){
+      process.exit(1)
+    }, 2000)
+    c.body = '1'
+  })
 }
\ No newline at end of file
diff --git a/views/install/index.ejs b/views/install/index.ejs
index 2951cb8..bdda728 100644
--- a/views/install/index.ejs
+++ b/views/install/index.ejs
@@ -35,4 +35,90 @@
   </form>
 </div>
 
+<div class="ui dimmer" id="loader">
+  <div class="ui loader text">Rebooting...</div>
+</div>
+
+<script>
+  function getValue(obj){
+    if(!obj || !('value' in obj)) return ''
+    return obj.value
+  }
+
+  $('#test-printer').click(function(){
+    let json = {
+      device: '',
+      feed: 0
+    }
+    let dev = getValue(document.querySelector('select#tty'))
+    let feed = getValue(document.querySelector('input#feed'))
+
+    if(!dev) return alert('請選擇印表機連接埠')
+    if (!isFinite(feed) || feed < 0) return alert('切紙前空行請輸入整數')
+
+    json.device = dev
+    json.feed = Math.floor(parseInt(feed))
+
+    $.ajax({
+      url: '/install/printer_test',
+      type: 'post',
+      data: json,
+      success: function(e){
+        alert(e.msg || '資料傳送失敗')
+      }
+    })
+
+  })
+
+  $('form#setup').submit(function(e) {
+    e.preventDefault()
+
+    let json = {
+      tty: '',
+      feed: 0,
+      ble: ''
+    }
+    let dev = getValue(document.querySelector('select#tty'))
+    let feed = getValue(document.querySelector('input#feed'))
+    let elBle = document.querySelector('input#en-ble')
+    let ble = ''
+    if(elBle != null && 'checked' in elBle) ble = elBle.checked ? 'yes' : 'no'
+
+    if(!dev) return alert('請選擇印表機連接埠')
+    if (!isFinite(feed) || feed < 0) return alert('切紙前空行請輸入整數')
+
+    json.tty = dev
+    json.feed = Math.floor(parseInt(feed))
+    json.ble = ble
+
+    $.ajax({
+      url: '/install/write_config',
+      type: 'post',
+      data: json,
+      success: function(e){
+        if(e.status != 1) {
+          alert(e.msg || '寫入失敗')
+          return
+        }
+
+        $.ajax({
+          url: '/reboot_sys',
+          type: 'put',
+          success: function(){
+            setTimeout(function(){
+              location.replace('/')
+            }, 30000)
+            $('#loader').addClass('active')
+          },
+          error: function(){
+            alert('系統重新啟動失敗')
+          }
+        })
+      }
+    })
+
+    return false
+  })
+</script>
+
 <%- include ../includes/footer.ejs %>
\ No newline at end of file