Smart lock

A smart lock for securing a closure, the smart lock comprising:

• a drive train for actuating a lock mechanism between a first mechanical end stop and a second mechanical end stop, corresponding to an unlocked position and a locked position or vice-versa, wherein the lock mechanism comprises a bolt for securing the closure;
• an electric actuator arranged to drive the drive train to actuate the lock mechanism;
• a position sensor arranged to output a location signal indicative of a position of the drive train;
• a current sensor arranged to output a current signal indicative of an electrical current flowing through the electric actuator;
• and
• a processor configured to:
• a. control the electric actuator to actuate the lock mechanism in a first direction;
• b. monitor the current signal;
• c. determine a position of the first mechanical end stop for the lock mechanism based upon the current signal;
• d. define a first operational end stop for the lock mechanism as a distance from the respective mechanical end stop, the first operational end stop spaced from the first mechanical end stop;
• e. control the electric actuator to actuate the lock mechanism to stop at the first operational end stop based upon the location signal;
• f. determine a position of engagement between the drive train and the bolt based upon the current signal;
• g. define a third operational end stop for the lock mechanism based upon the position of engagement;
• h. select one of the first operational end stop or the third operational end stop;
• and
• i. control the electric actuator to actuate the lock mechanism to stop at the selected operational end stop based upon the location signal.