DIY Metal Detector (Spirit PI ESP32 project)

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I built a ESP32 pulse injection metal detector based on the Spirit PI project (links below) and required appropriate hardware to:

• Create a 200mm coil base with adjustable angle hinge (connects to a length of 25mm PVC pipe).
• Create a arm rest and wrist handle for easy movement.
• Create a mounting box for the electronics.
• Create a Galaxy S9 phone holder that sits on top of the mounting box (to interface with the detector).

Print with PETG-CF for good toughness and durability.

 

Zip ties are used to secure the components to the 25mm PVC pipe. 

 

No battery holder as I use a 12v battery with cable to a backpack (makes the detector very light to use).

 

The phone holder is required as the ESP32 uses Bluetooth to control the detector from the “Spirit PI” android app.

 

Links to this project:

DIY -Spirit PI- ESP32 + Smartphone Metal Detector | Hackaday.io 

"Spirit PI" Wireless Metal Detector | N.E.C.O

Metal Detector Project – Apps on Google Play

 

Bolt/Nut was generated using the following Maker World project:
https://makerworld.com/en/models/1055250-screw-generator-parametric-screws-nuts-washer#profileId-1042636