Beverage preparation machine

A food or beverage preparation machine comprising a controller and a control panel, the control panel comprising a set of actuators and a corresponding set of pressure sensors, the control panel is configured for a user to select a volume value, and each of the actuators and each of the corresponding pressure sensors are associated with a different volume value than the other actuators and the other pressure sensors, the set of actuators are each pressure-sensitive and comprise a first end with a first deformable surface which is configured to receive a press action from a user, a second end with a second deformable surface which is in physical contact with the corresponding pressure sensor, and a first elongated portion connecting the first end and the second end, the first elongated portion is configured to transfer to the second end a pressure that has been generated at the first end, such that when the press action is applied to the first deformable surface, the corresponding pressure is transferred to the second deformable surface by the first elongated portion and is applied to the pressure sensor, the pressure sensor is configured to detect the pressure and generate a pressure signal, the pressure sensor is electronically connected to the controller and configured to communicate the pressure signal to the controller, the controller is configured to detect the press action applied to set of actuators based on the pressure signal to set the volume value, wherein the first elongated portion is non-deformable and comprises a hollow cavity filled with a fluid, wherein the first elongated portion comprise a material configured to reflect light, and a reflective index of the material configured to reflect light is greater than a reflective index of the fluid in the hollow cavity, and a machine head having a receptacle for accommodating a portioned beverage ingredient and in which a fluid is injected for preparing a food or a beverage, and a machine body comprising a water pump and a water heater, wherein the control panel is situated at the machine head, and the set of pressure sensors is situated at the machine body, wherein machine head and the machine body are separated by a leak-tight wall.