General tech discussions on all types of metal detectors: VLF, 2-box, BFO, off-resonance, PLL, etc. Questions, ideas, and anything else that moves you.

Tech discussions specific to Pulse Induction

Same as the Tech forum, but coil-specific.

Detector mods, plus any other useful add-ons.

If you have a schematic to share, post it here. Please read the Intro post for rules on posting schematics.

A place to discuss the non-technical aspects of metal detectors. Your favorite detectors, favorite features, or favorite accessories.

Tech discussions on mags.

Technical books, papers, and literature related to treasure hunting technology. Any books written by Geotech members are made sticky at the top of the forum.

Tech discussions on sonar, transducers, and towfish construction.

Other geophysics techniques, including earth resistivity, GPR, infrared, induced polarization, etc.

Vacuum forming, coil winding, packaging... anything mechanical.

Cool circuits, tips, techniques, PCB methods, test equipment, etc.

This is a special section dedicated to coding techniques, tips, tricks, methodology, programming various modules, MCUs, digital filters, etc. Basically, anything code-related.