3D Printed Parts
Print the base and case -- these were derived from this Ruiz Bros. design, the IoT Battery Monitor.
STL files for 3D printing are oriented to print "as-is" on FDM style machines. Parts are designed to 3D print without any support material using PLA filament. You can download the CAD models, STLs, and 3MF file using the link below.
w.FL Antenna Connector
Flip the Feather over and carefully press the w.FL cable into the w.FL connector on the board.
Note that w.FL connectors are on the fragile side and not made for many repeated connections. Exercise caution pitting it on and plan to leave it on for best results.
Base Mount
Screw the Feather to the base using two M2.5 x 6mm and two M2 x 6mm screws (for the smaller holes near the antenna end of the board).
Film Peel
Gather friends and family around so you may share with them the glory of the satisfying screen protection film peel!
Mount Antenna Connector to Case
Feed the RP-SMA antenna connector through the case, then fit on the retention washers and nut. Tighten the nut -- you don't need to go berserk with it, the inner hex shape will prevent it from turning.
Case Closed
Tuck the excess wire down to the bottom of the case and then snap fit it shut.
Be mindful that the wire doesn't get trapped in front of the screen or under the button actuators.
Screw on Antenna
You can use either the smaller 2dBi or larger 5dBi 2.4GHz dipole swivel antenna with this project.
Simply screw it onto the RP-SMA connector and you're ready to go!
Page last edited March 25, 2026
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