fixed piface sensor support

app/Http/Business/Sensors/PiFaceSensor.php

 
         $device = intval(isset($data['Device']) ? $data['Device'] : 0);
         $pin = intval(isset($data['Pin']) ? $data['Pin'] : 0);
-        $trueValue = intval(isset($data['True']) ? $data['True'] : 0);
-        $falseValue = intval(isset($data['False']) ? $data['False'] : 0);
+        $trueValue = isset($data['True']) ? $data['True'] : 'Yes';
+        $falseValue = isset($data['False']) ? $data['False'] : 'No';
 
         $args = [
             'camotion-piface',
         }
 
         $value = new SensorsValueDbo();
-        $value->setValue($output);
+        if ($output[0] == "0") {
+          $value->setValue($falseValue);
+        }
+        else {
+          $value->setValue($trueValue);
+        }
         return $value;
     }
 }