Exercise machine with load cell

An exercise machine comprising:

• a plurality of structural elements including a main vertical beam and a base frame operable to be positioned on the ground, said main vertical beam extending vertically from the base frame;
• a plurality of pulleys mounted to the plurality of structural elements;
• a plurality of exercise cables running through the plurality of pulleys;
• a plurality of handles coupled to the plurality of exercise cables;
• a weight assembly including a weight and a weight beam where the weight is movable along the weight beam and where the weight beam is mounted to the base frame at a pivot point, wherein moving the weight on the weight beam relative to the pivot point increases or decreases the weight, and wherein one of the plurality of pulleys is a weight lifting pulley that lifts the weight beam;
• a load cell coupled to the weight assembly, said load cell providing an output signal identifying a load on the weight;
• a seat mounted to the vertical beam, wherein the configuration and orientation of the plurality of structural elements, the plurality of pulleys, the plurality of cables and the plurality of handles are configured to allow a user seated in the seat to exercise the user's shoulder muscles;
• and
• a stop bar mounted to the base frame and positioned adjacent to the weight beam, said stop bar including a stop pin that prevents the weight beam from being lifted higher than the stop pin.