Open Metal Detector Project

thingiverse

I'm launching a project that's destined to create an innovative metal detector. My choice of hardware includes the Arduino microcontroller and electronic components from this fascinating resource: http://hackaday.com/2013/07/25/build-your-own-metal-detector/. As the chief architect, I've designed 3D printable parts with great care. My goal is to gather contributors and new ideas, ensuring our project outperforms high-priced commercial metal detectors. Although we've made progress so far, there's still a long road ahead of us. This endeavor is hosted on https://solar1.net/drupal/metal_detector, where you're invited to contribute. Here are the step-by-step instructions: Begin by printing the base search coil and pivot assembly. Take note that the male part of the pivot should be epoxied securely inside a 3/4-inch PVC pipe. To ensure optimal comfort during operation, bend the handle end of the PVC using a torch until it's just right. The electronics for this project are relatively uncomplicated at present, relying on a simple oscillator found here: http://dzlsevilgeniuslair.blogspot.dk/2013/07/diy-arduino-based-metal-detector.html. Unfortunately, our initial circuit is still somewhat unstable. When detecting metal signals away from the source, we've experienced difficulty in maintaining a stable frequency, making it challenging to register readings on target objects. However, if I'm able to achieve stability in the frequency, it picks up metal signals quite easily. Our next development iteration will focus on upgrading our system with either a BFO (Beat Frequency Oscillator) or VLF technology, which promises enhanced accuracy.