Methods and apparatus are provided for manufacturing an analyte detecting device. In one embodiment, the apparatus comprises a housing； a penetrating member driver； a cartridge containing a plurality of penetrating members； a display on the cartridge； a linear slider on the housing, the slider coupled to a rod； and the rod moving with the slider, the rod having at least one roller. The device uses the linear motion of the slider to rotate the cartridge, punch open a new cavity and load a new penetrating member.
