PI metal detector (Project)

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Attention! This is not a real device - only project for direct manufacturing (PCB and assembling)

Pulse induction metal detector

Model on the New Hobby: NH-250-v1

Type of the components: THT

Number of layers: 2

Dimension of the PCB: 91 x 79 mm

The downloadable ZIP file contain files:




Pick and Place

High resolution schematic

List of components

Short manual

PCB files for printing (top and bottom)

No any brands on the board.


Low reaction for stones, consists iron and ferrous oxides

Possibility to use small, normal and big coils

Easy mounting in a box

You can use this metal detector for:

- General purpose metal detector 

- Searching on the beach 

- Underwater metal detector 

- Searching meteorites 

- Searching gold (nugget) 

- Detector for deep searching


Model on New Hobby: NH-250

Principle: Pulse Induction

Mode: non-motion


Search coil: RED (not included, choose diameter from the site)

Indication: LCD display, sound

Ground compensation

Power: 18V,  reverse polarity protection (Also you can use 4-12V battery with DC-DC Step Up Power Module like NH-202)

Low battery alarm

Consumption: 140 mА

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PI metal detector (Project)

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