Slim Apple AirTag Card DIY Kit User Guide

This guide is made specifically for this product.

Building Guide

I. Required Tools

  1. Soldering iron.
  2. Heat gun or hair dryer.
  3. Hot glue gun.
  4. Small flat head screwdriver.
  5. Box cutter.
  6. Flush cutter pliers.
  7. Safety goggles.

II. Build Video

III. Troubleshooting & Tips

  • If you find the speaker volume to be too low, try rotating the speaker magnet in place and testing the speaker volume until you find the "sweet spot". This is not always the same orientation as it was before the modification.
  • If you break one of the pads, please refer to minute 8:26 in the video for a workaround.
  • Using a multimeter in continuity mode, after bridging the top two circular pads as seen in minute 15:58 in the video, the left and right copper wires should test positive for continuity.
  • Using a multimeter in continuity mode, the middle copper wire and any one of the ground points seen here should test positive for continuity.
  • Using a multimeter in resistance mode, probing the middle copper wire and either left or right wire should indicate a resistance of 3 MΩ or more. If the resistance is too low, the AirTag will not power on, which indicates a short circuit. In that case:
    • Ensure that the two top circular pads seen in minute 15:58 in the video are not bridged with the bottom pad.
    • Ensure that the three connections to the copper wires are all isolated and no bridges are present.
    • Verify the rest of the board for damage or accidental bridging.