Kitchen device having a magnetometer

A kitchen device having:

• a base with a coupling for receiving an accessory, the accessory comprising a magnet and being configured for performing an operation when operated by the kitchen device;
• a controller configured to operate the kitchen device, and thereby the accessory, to perform the operation;
• and
• a magnetometer located in the base and configured to interact with the magnet when the accessory is coupled to the base to provide an accessory signal indicative of a presence of the accessory to the controller,
• wherein the magnetometer includes three or more sensor elements, each sensor element comprising a magnetoresistor, at least one sensor element being aligned with a respective orthogonal axis for providing an accessory signal including a component for a respective orthogonal axis, each component being indicative of a magnetic field strength in the direction of the respective orthogonal axis;
• wherein the controller is configured to receive the accessory signal and transform the components of the accessory signal to provide a transformed signal, the transformed signal including a component for a respective transformed sensor axis, each component being indicative of a magnetic field strength in the direction of the respective transformed sensor axis, and wherein the transformed sensor axes intersect at an expected position of the magnet when the accessory is used with the kitchen device;
• wherein the controller is configured to determine, based on the transformed signal and calibration data, a distance of the magnet from the expected position;
• and
• wherein the controller is configured to, when the distance of the magnet from the expected position is within a predetermined tolerance, operate the kitchen device.