Getting Started

Videos

I recommend watching the video playlist embedded below, as there is a lot of information to convey. If you’d prefer to watch on another device, it’s easy to find on YouTube by searching for “briffidi getting started”. If the videos are unavailable, a written guide is included below.

Gather these Things

  1. A phone running Android 8.1 (Oreo) or later with:

    • NFC capability
    • a physical (not virtual) gyroscope sensor
    • a shape/size that fits securely in the cradle of the SW1

  2. Approximately 4,000 (1.35 kg) 4.5 mm (.177 cal) steel BBs.

Get the App

If necessary, install the Briffidi SW1 app from Google Play .

Add the Device to the App

  1. Place the phone near the Briffidi decal on the front of the SW1 and move it around until the NFC tag is scanned. The app will open, and the SW1 will be added and selected.
     
    If the tag won’t scan, ensure that NFC is enabled in your phone Settings. You may need to lift the SW1 to get the tag close to the NFC reader of some phones.
    Place iPhone Near Tag Device Added

Fill the SW1 with BBs

  1. Remove the cradle stop.
    Remove Cradle Stop
  2. Disengage the spring and rotate the spring stops out.
    Disengage Spring Disengaged Spring
  3. Remove the cradle support piece.
    Remove Cradle Support
  4. Remove the retention clip at the back of the SW1 and remove the cover.
    Loosen Rear Thumbscrew
  5. Fill the cavity with BBs to just below the level of the internal ribs.
    Fill with BBs
  6. Replace the cover and reinstall the retention clip.

Level the SW1

  1. Place the SW1 where you intend to use it.
  2. Mount the calibration rod in the cradle. Include the weight or fully extend the extendable rod.
    Mount Calibration Rod
  3. Adjust the three leveling feet until the cradle stays nearly stationary when released from any position. How?
    Adjust Leveling Feet
  4. Re-engage the spring with the raised feature on each spring stop.
    Re-engage Spring 1 Re-engage Spring 2
  5. Wait two minutes before measuring. Why?

Calibrate

There are two types of calibration rod.

Type 1 is a PVC pipe with removable calibration weight. The end of the pipe nearest the label goes against the back wall of the cradle. If the calibration weight has an “UP” indicator, orient it appropriately.
Configuration #1: The weight is fully-installed on the end of the rod for the first and third groups.
Configuration #2: The weight is removed for the middle group.

Type 2 is an extendable rod with permanent weight. To extend or retract the rod, twist the octagonal weight counterclockwise to unlock it and clockwise to lock it. When extended, ensure that all four internal sections are exposed (overall length of 29 inches or 74 cm). For greatest accuracy, when locking the rod in the extended position, either let it hang vertically or, if locking it while installed in the SW1, support the weight to keep the rod straight.
Configuration #1: The rod is fully-retracted for the first and third groups.
Configuration #2: The rod is fully-extended for the middle group.

  1. If not already mounted, mount the calibration rod in the cradle in configuration #1.
    Rod Against Rear\
  2. Navigate to the Measure page.
    Navigate To Measure
  3. Place the phone in the cradle. Ensure that it is upright, fully seated, and secure.
    Install Phone
  4. Press and hold the cradle against the spring stop that has an indicating arrow.
    Load Cradle Load Cradle Close
  5. Tap the Measure button.
    Measure Button
  6. Release the cradle to record a measurement. Note: Measurements will be inaccurate until calibration is complete.
  7. When Stop appears in the button, stop the cradle.
    Recording Button
    Stop Button
    Wait Button
  8. Change the calibration rod to configuration #2 and ensure it is still tight against the back of the cradle.
  9. Tap the + button to add a second measurement group.
    Plus Button
  10. Repeat steps 4-7 two times to record two measurements.
  11. Change the calibration rod back to configuration #1 and ensure it is still tight against the back of the cradle.
  12. Tap the + button to add a third measurement group.
  13. Repeat steps 4-7 to record a measurement.
  14. Navigate to the Calibrate page.
    Navigate to Calibrate
  15. Verify that the five calibration checks are satisfied. If not, re-measure to correct.
    Calibration Checks
  16. Tap the Calibrate button. The calibration result below the button will update, and calibration is complete.
    Calibrate Button

Measure

  1. To measure the swingweight of a racquet, install the handle against the rear wall of the cradle with the head perpendicular to the ground and use the same technique as used during calibration.
    Racquet in Swingweight Orientation
  2. To measure twistweight, see the Twistweight page.
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