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Directory Topics Posts Last Post
General
Can't Register? Can't Log In? START HERE
Please read BEFORE contacting admins
Topics: 3 Posts: 3
Last Post: Other Issues
3 3
Carl-NC
by Carl-NC
Announcements
Read this first before posting
Topics: 2 Posts: 2
2 2
Inside the Metal Detector
ITMD1&2
Discussions concerning content, circuitry, source code, etc for the 1st & 2nd editions.
Topics: 59 Posts: 668
59 668
Carl-NC
by Carl-NC
ITMD3
Discussions concerning content, circuitry, source code, etc for the 3rd edition.
Topics: 19 Posts: 537
Last Post: PI-GB Design
19 537
karakus
by karakus
Sub-Forums:
IB Designs (4/5)
PI designs (5/64)
Technology
Tech Forum
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.
Topics: 5,519 Posts: 84,330
5,519 84,330
Pep_T
by Pep_T
PI Technology
Tech discussions specific to Pulse Induction
Topics: 394 Posts: 23,358
394 23,358
Coils
Same as the Tech forum, but coil-specific.
Topics: 2,312 Posts: 24,637
2,312 24,637
Modifications
Detector mods, plus any other useful add-ons.
Topics: 756 Posts: 7,771
756 7,771
Schematics
If you have a schematic to share, post it here. Please read the Intro post for rules on posting schematics.
Topics: 1,593 Posts: 30,355
1,593 30,355
General Detectors
A place to discuss the non-technical aspects of metal detectors. Your favorite detectors, favorite features, or favorite accessories.
Topics: 62 Posts: 1,269
62 1,269
Malospelos
Magnetometers
Tech discussions on mags.
Topics: 741 Posts: 4,181
741 4,181
Technical Books, Papers, and Literature
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.
Topics: 12 Posts: 169
12 169
Side Scan Sonar
Tech discussions on sonar, transducers, and towfish construction.
Topics: 873 Posts: 3,293
Last Post: JW Fishers Pulse 12
873 3,293
Yury
by Yury
Geophysics
Other geophysics techniques, including earth resistivity, GPR, infrared, induced polarization, etc.
Topics: 374 Posts: 3,353
374 3,353
Tools & Techniques
Vacuum forming, coil winding, packaging... anything mechanical.
Topics: 204 Posts: 2,124
Last Post: Terrain mapping
204 2,124
ivconic
by ivconic
General Electronics
Cool circuits, tips, techniques, PCB methods, test equipment, etc.
Topics: 592 Posts: 5,878
Last Post: OMG
592 5,878
kt315
OMG
by kt315
Programming
This is a special section dedicated to coding techniques, tips, tricks, methodology, programming various modules, MCUs, digital filters, etc. Basically, anything code-related.
Topics: 50 Posts: 450
50 450
Projects
Project Competition
Got a something in mind you would like to see designed? Post it here and see who can come up with the best solution.
Topics: 10 Posts: 607
10 607
Completed Projects
Projects that have been reasonably completed
Sub-Forums:
Arduino Nano PI (9/951)
Baracuda PI (80/3,688)
Beachmaster PI (3/287)
Geotech Baracuda (53/872)
Hammerhead PI (412/3,525)
Hammerhead II PI (23/688)
Minipulse Plus (191/4,261)
SPI-MX 3b (16/164)
Stuart I & II PI (38/277)
Voodoo (5/1,773)
Active Projects
Projects that are currently being developed
Sub-Forums:
AMX Project (10/884)
Abandoned Projects
Project that were never completed but may still have good info
Sub-Forums:
GPR Project (38/506)
Kingfisher PI (2/56)
Surfmaster II (19/568)
Tinkerer's IB-PI (32/1,822)
USB Projects (10/1,887)
Misc
Buy-Sell-Trade
Detectors, parts, electronics, and so forth. No dealer restrictions.
Topics: 1,061 Posts: 5,619
1,061 5,619
Treasure Magazines & Books
Buy-Sell-Trade-Discussion specifically for treasure mags, books, & other publications.
Topics: 213 Posts: 456
213 456
Vintage & Collectable
Pics & info on vintage detectors, for those who like "the good ol' days" of digging everything.
Topics: 187 Posts: 1,019
187 1,019
Melbeta's Vintage Files
Unique vintage metal detector info donated by denizen 'Melbeta'.
Topics: 86 Posts: 581
86 581
Free Advertising
Those who have products & services they would like to advertise may do so here. Please read the Intro post.
Topics: 122 Posts: 135
122 135
Forum Issues & Feedback
Problems with the forums? Suggestions for improvements? Post them here.
Topics: 1 Posts: 3
Last Post: Forum changes
1 3
Carl-NC
by Carl-NC
Offsite Forums
Advanced Metal Detecting Research Lab
Italian website run by Leonardo Ciocca. Since 2009, a technical reference point. Objective and impartial to all lovers of the metal detector.
Topics: 0 Posts: 0
0 0
Topics: 0 Posts: 0
0 0
Eric Foster's PI Tech Forum
at Findmall.com
Topics: 0 Posts: 0
0 0
Pulsdetektor Forums
Tech forums dealing with the various Pulsdetektor projects. German only, Click Here for a BabelFish English translation.
Topics: 0 Posts: 0
0 0
Russian Metal Detecting forums
Lots of technical forums, but all in Russian. Click Here for a BabelFish English translation.
Topics: 0 Posts: 0
0 0
THunting.com
THunting.com is the former host for Geotech. These are general Treasure Hunting forums.
Topics: 1 Posts: 7
Last Post: End of an era
1 7
Tanu
by Tanu
LongRangeLocators.com
The world's largest forum dedicated to the discussion of LRLs and related devices.
Topics: 0 Posts: 0
0 0

What's Going On?

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There are currently 1514 users online. 92 members and 1422 guests.

Most users ever online was 9,312 at 04:42 PM on 04-26-2025.

Geotech Forums Statistics

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Topics: 17,593   Posts: 245,318   Members: 6,962   Active Members: 455
Welcome to our newest member, pasakoylu.

Latest Topics

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  • Prince Zhakata
    Voodoo project
    by Prince Zhakata
    I'm looking for the schematic for voodoo metal detector and its source code
    Any one can help with that please.
    Yesterday, 03:04 PM
  • hykj888
    Regarding the fluxgate sensor and the gradiometer
    by hykj888
    it is important to clarify two distinct concepts resolution and sensitivity. These two parameters are often confused. For fluxgate sensors, the core parameter is resolution, and sensitivity can be improved through operational amplifiers or other means.
    Feedback types can be divided into two categories:...
    05-27-2025, 07:52 AM
  • dbanner
    Pulse Induction (PI) Bifilar DD Coil with Active Nulling
    by dbanner
    "A bifilar coil where the Tx and Rx coil are co-located(hence bifilar). How can we null such a coil, or do we even have to? See, you can have a DD bifilar, so you have an inductively balanced arrangement in which each half contains a co-located Tx and Rx coil. When the Tx is on(on both sides),...
    05-26-2025, 04:30 PM

trending

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  • hykj888
    Regarding the fluxgate sensor and the gradiometer
    by hykj888
    it is important to clarify two distinct concepts resolution and sensitivity. These two parameters are often confused. For fluxgate sensors, the core parameter is resolution, and sensitivity can be improved through operational amplifiers or other means.
    Feedback types can be divided into two categories:...
    05-27-2025, 07:52 AM
  • Detectorist#1
    Hobby Hybrid MD1
    by Detectorist#1
    Hi all MD enthusiasts! Now, I propose one more schematic of hybrid MD. This design is based on the schematic of DFBowers and previous my designs. First, this design uses ready search 15"x12"DD coil of SEF type. This avoid the manufacturing of the search coil - the hardest work for me and maybe...
    02-11-2025, 08:17 AM
  • Prince Zhakata
    Voodoo project
    by Prince Zhakata
    I'm looking for the schematic for voodoo metal detector and its source code
    Any one can help with that please.
    Yesterday, 03:04 PM
  • Ivont
    Ground balance compensation coil
    by Ivont
    Hello guys. I apologize in advance if this has been discussed, but I couldn't find a topic. Has anyone made a coil with a built-in ground balance compensation coil?
    05-19-2025, 09:35 AM
  • algan
    looking for the source code for a CLONE PI AVR
    by algan
    Hello colleagues, I am looking for the source code for a CLONE PI AVR that works with the ATmega 8. Thank you..
    05-24-2025, 08:14 AM
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