The present invention is directed to a method of preparing dehydrated blood products, comprising the steps of: providing a hydrated blood product; spray-drying the hydrated blood product to produce a dehydrated blood product, as well as dehydrated blood products made by the method. In particular, the present invention provides a game platform, a biofeedback sensor, and a biofeedback signal interface connection between the game platform and the biofeedback sensor. By monitoring a driving parameter of an actuator that effects the clamping andor firing, the systems and methods provide an indication of failure in response to the monitored drive parameter. The attachment mechanism includes a rotary shaft passing through the interior wall of the housing and rotatable in relation to the housing.