Powered fastener driver

A powered fastener driver comprising:

• a housing;
• a cylinder within the housing, the cylinder containing a pressurized gas;
• a piston within the cylinder and moveable from a top-dead-center position to a bottom-dead-center position;
• a driver blade moveably coupled to the piston for driving a fastener into a workpiece;
• a lifter mechanism for providing torque to move the driver blade from the bottom-dead-center position toward the top-dead-center position, the lifter mechanism including a motor;
• an optical sensor configured to monitor a position of the driver blade;
• and
• a controller electrically connected to the motor and the optical sensor, the controller configured to:
• monitor the position of the driver blade,
• correlate, using an algorithm stored in the controller, the position of the driver blade to an acceleration value of the driver blade,
• correlate, using an algorithm stored in the controller, the acceleration value of the driver blade to a pressure value of the cylinder,
• compare the pressure value to a predetermined pressure range, and
• activate an indicator when the pressure value is outside the predetermined pressure range.

A powered fastener driver comprising:

• a housing;
• a cylinder within the housing, the cylinder containing a pressurized gas;
• a piston within the cylinder and moveable from a top-dead-center position to a bottom-dead-center position;
• a driver blade moveably coupled to the piston for driving a fastener into a workpiece;
• a lifter mechanism for providing torque to move the driver blade from the bottom-dead-center position toward the top-dead-center position, the lifter mechanism including a motor;
• a current sensor configured to monitor a current draw of the motor;
• an optical sensor configured to monitor a position of the driver blade;
• and
• a controller electrically connected to the motor, the current sensor, and the optical sensor, the controller configured to:
• monitor the current draw of the motor using the current sensor and the position of the driver blade using the optical sensor,
• correlate, using a first algorithm stored in the controller, the current draw to a first pressure value,
• correlate, using a second algorithm stored in the controller, the position of the driver blade to an acceleration value of the driver blade and the acceleration value to a second pressure value of the cylinder,
• compare the first pressure value and the second pressure value to a predetermined pressure range, and
• activate an indicator when the first pressure value or the second pressure value is outside the predetermined pressure range.