OngoingArduino MetalDetector
STDArduino MetalDetector
License
：Public Domain
Description
This Arduino Colpitts Metal Detector is a continuation and modification of two previous projects. The code and circuit is a complete re-write by S. Zihlmann of the version by Evan Kale (both projects found online) that improves the reliability of the circuit. I added a couple features to the circuit and code- specifically an OLED Display that shows the Oscillator Frequency (and any deviation if metal is detected) and a Battery Level Monitor.
This version uses an Arduino ProMini 5v ATmega328 instead of the Nano. For ease of assembly, all thru-hole parts as used.
The Search Coil that must be constructed consists of a 20 to 25 Turns of 24guage Magnet Wire on a round 20inch form.
Inductance of the coil (L1) should be approximately 280uH to 420uH, which should oscillate approximately 110KHz to 135KHz.
No other adjustments are needed for this circuit.
Circuit is unverified, but code does compile!
Design Drawing
The preview image was not generated, please save it again in the editor.BOM
Bom empty
CloneProject Members
Intellectual Property Statement & Reproduction Instructions
This is an open-source hardware project. All intellectual property rights belong to the creator. The project is shared on the platform for learning, communication, and research only; any commercial use is prohibited. If your intellectual property rights are infringed on EasyEDA, please notify us by submitting relevant materials in accordance with the Rules for Complaints and Appeals of IPR Infringement.
Users must independently verify the circuit design and suitability when replicating this project. All risks and consequences are borne by the user, and the platform assumes no liability.
Empty
Comment