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CIRCUIT · SPIRIT PI METAL DETECTOR

Spirit Pi Metal Detector Circuit Diagrams

The Spirit Pi is a popular open-source pulse induction metal detector. These circuit diagrams illustrate its core subsystems—power supply, microcontroller, transmitter/receiver, and preamp—helping hobbyists and engineers understand the design and adapt it for custom builds.

4 EXAMPLES· UPDATED 2026-09-19
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Spirit Pi Metal Detector Circuit

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Spirit Pi ESP32-S3 Metal Detector Circuit

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Spirit Pi TX/RX & Preamp Interface

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Spirit Pi Metal Detector

ABOUT

About these examples.

Use the generator below to create your own Spirit Pi circuit diagram. Start from one of the examples or build from scratch with an extensive component library.

HOW TO

Make one yourself.

  1. 1

    Choose a starting point

    Open the circuit diagram maker and either select a Spirit Pi template from the gallery or begin with a blank canvas.

  2. 2

    Add components

    Drag and drop resistors, capacitors, transistors, microcontrollers, and connectors from the circuit symbol library onto the canvas.

  3. 3

    Connect the components

    Draw wires between component pins to create the electrical connections, following the reference schematic if needed.

  4. 4

    Label and annotate

    Add component values, net labels, and notes to make the diagram clear and buildable.

  5. 5

    Export or share

    Save the diagram as an image or PDF, or share a live link for collaboration or documentation.

FAQ

Frequently asked questions

What is the Spirit Pi metal detector?01
The Spirit Pi is an open-source metal detector project based on pulse induction technology. Its circuit diagram typically includes a microcontroller, a transmitter coil driver, a receiver amplifier, and a power supply section.
Can I use these diagrams to build my own Spirit Pi?02
Yes, the examples in the gallery are intended as reference schematics. You can fork any of them in the generator, modify components, and produce a diagram tailored to your exact parts.
Is there an ESP32 version of the Spirit Pi circuit?03
Yes, one of the gallery examples shows a Spirit Pi circuit built around the ESP32-S3. You can use that as a starting point if you want Wi-Fi or Bluetooth capabilities in your metal detector.
How do I export a circuit diagram for PCB design?04
After creating your diagram, you can export it as an image or PDF. For PCB layout, you will typically redraw the schematic in a dedicated EDA tool, but the exported diagram serves as a clear blueprint.
What software should I use to draw a Spirit Pi circuit diagram?05
You can use ChatDiagram’s circuit diagram maker. It provides a rich library of electronic symbols, easy wire routing, and collaborative editing, making it suitable for both quick sketches and detailed schematics.
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