diff --git a/src/blocks/block_arduino.js b/src/blocks/block_arduino.js
index e8449be976..275e00b3d5 100644
--- a/src/blocks/block_arduino.js
+++ b/src/blocks/block_arduino.js
@@ -46,6 +46,7 @@ Entry.SensorBoard = {
 
 Entry.dplay = {
     name: 'dplay',
+    vel_value : 255,        
     setZero: Entry.Arduino.setZero,
     timeouts: [],
     removeTimeout: function(id) {