made changes in tanks start and stop

src/models/tanks.js

@@ -23,7 +23,7 @@ const tanksSchema = new mongoose.Schema({
     motor_status: { type: String, default: 0 },
     connections: {
         source: { type: String},
-        inputConnections: [{ inputConnections: String,input_type:String,motor_status:String }],
+        inputConnections: [{ inputConnections: String,input_type:String,motor_status:"0" }],
         outputConnections: [{ outputConnections: String,output_type:String }]
     }