Motion vs Non-Motion Metal Detectors

[ivconic]

Motion detectors:
Require constant movement of the search coil to detect metal objects. The coil transmits an electromagnetic field and receives a signal when the field encounters a conductive object. As you move the coil, the signal changes and triggers an audio or visual alert.
Non-motion detectors:
Do not require constant movement of the search coil. They continuously transmit and receive electromagnetic fields, and any change in the received signal indicates the presence of metal. You can sweep the coil slowly or hold it still while detecting.

Motion Detectors
- Ease of use - Simpler to operate for beginners.
- Detection speed - Faster to cover large areas.
- Target depth - Generally less deep than non-motion detectors.
- Discrimination - Limited discrimination capabilities.
- Pinpointing - Requires switching to a "pinpoint mode" for precise location.
- Battery life - Generally longer battery life due to simpler electronics.
- Ideal for beginners, casual hobbyists, and those who want to cover large areas quickly.

Non-Motion Detectors
- Ease of use - Requires more practice and understanding of signal interpretation.
- Detection speed - Slower, but allows for more precise target location.
- Target depth - Can detect deeper targets.
- Discrimination - Offer more advanced discrimination features for filtering out unwanted targets.
- Pinpointing - Easier to pinpoint targets due to continuous signal feedback.
- Battery life - May have shorter battery life due to continuous operation.
- Preferred by experienced users who prioritize deep target detection, precise location, and advanced discrimination capabilities.
- Non-motion detectors can be more susceptible to interference from ground mineralization.

[ivconic]

That's what it looks like when the AI (Bard) is asked about it.

[ivconic]

Why I prefer the non-motion type detector?
- Because I can continuously monitor the behavior of the signal in a very small space, without moving the coil.
- Because by subtle changes in the height of the coil and by moving the coil very slightly to the left, right, forward, back, in a very small space in relation to the soil, I can judge the size, depth and shape of the target.
- Because in recent years there is not much left from findings on the sites from targets such as whole coins and whole pieces of jewelry, parts of weapons, personal items, etc.
What remains are very small coins, even up to 4mm in diameter, mostly silver or gold, mostly silver or gold pieces of jewelry, personal items... very difficult targets for motion type detectors.
Often completely "invisible" to motion type detectors.
- In order to have any success in the search, in recent years, detailed "scanning" of small areas is recommended. Sometimes I stay for half an hour on an area of one square meter.
- My search for coins (my favorite target), in recent years, has become more and more like a search for small gold nuggets.
I believe that few colleagues will know that there are such small silver prehistoric silver and gold coins, only a few millimeters in diameter, often irregular in shape.
- Non-motion also has advantages in searching for deep larger targets. Which motion detector "skips" very easily and "doesn't see" a bit.

[Olly]

Very impressive, some of the bottom coins look almost Celtic...

[gurdal]

hello ivconic master,
Non-Motion Dedectors
Do you have any pcb layout recommendations?

Thank you
yours truly

[ivconic]

Very impressive, some of the bottom coins look almost Celtic...

Those at left photo are from Ottoman empire, XIV to XVII century (not an expert, others told me), which I have discovered (280 pcs) 50 meters away from my home!!! I was shocked!
Those at right photo are indeed Celtic coins. There areas were inhabitated by Celtic tribes in the ancient past. I keep finding more and more proofs of their existence here.

[ivconic]

hello ivconic master,
Non-Motion Dedectors
Do you have any pcb layout recommendations?

Thank you
yours truly

At the moment nothing new and enough interesting.
At the moment I am fighting with windmills in an attempt to persuade our dear experts to devote themselves to the development of a good non-motion detector.
"Stay tuned"... maybe we will do something!

[ysabxe]

There are benefits from non-motion design, but need to know where to use it with max effectiveness. In my case it gives best separation and Disc on iron infested sites. Other thing is to make stable and sensitive design not easy task... AI will not help to do that task. Carl is testing one of my units now

[Carl-NC]

[FONT=Comic Sans MS]Motion Detectors
- Discrimination - Limited discrimination capabilities.

[FONT=Comic Sans MS]Non-Motion Detectors
- Discrimination - Offer more advanced discrimination features for filtering out unwanted targets.

Please explain how non-motion disc differs.

Also, a primary difference between motion & non-motion is the motion filters. If you bypass/disable the motion filters, you have a non-motion detector. This is how pinpoint mode is done in many designs. The Bandido is a good example, which has motion disc, motion AM, and static AM modes.

Finally, if you want to develop a non-motion detector, why don't you propose that and lead the effort?

[ivconic]

It may be not differs from technical aspect but it differs much in the field and in "feeling".
Static coil over the small target center will always give same audio pitch (having CS1220B in mind), there is similar behavior at Deus in AM mode, yet after 11 years I can't manage it the way I did with CS., so I don't use it at all.
While motion - moving - sweeping coil over the same target will always mix VDI numbers and pitches. In many cases will not even register the small target as non ferrous.
Those small 6mm silver coins are not rare here. Usually Deus announce them as small chunks of iron.
Only relying to rich previous experience I manage to find some of those, by suspecting it is coin and checking more detailed, sometimes is enough to "foot-wipe" the leaves and first layer of dirt and it gives suspicious response then.
Same audio pitch as on many White's in AM mode is not helping at all. I did recently attempt with Tesoro based non-motion, I think you remember, you helped with hints.
It is mere AM mode, for pinpointing as you said. It is not the non-motion I would like to see.
Also you will remember from recently that I have here White's CM5000 GEB/D in almost mint state. Not exactly the non-motion i would like to see here as new project.
Non-motion with good GEB feature and changing pitch audio should be starting point to develop and improve further.
Cscope 1220B is the closest to my desire. But it need improvements, first in course of stability, I mentioned auto-zeroing, to prevent often drifting and need for constant retuning.
Well I've already suggested it multiple times here, my neck has turned blood red from suggesting it!
But no one reacts, everyone ignores, obviously no one reads my posts. Everyone suddenly pays attention only when I write some provocation. And then everyone is suddenly ready to fight.
Moodz is right and I'm a fool. It is best to be silent, not to write anything and wait for someone to post something good here for nothing.

[ivconic]

There are benefits from non-motion design, but need to know where to use it with max effectiveness. In my case it gives best separation and Disc on iron infested sites. Other thing is to make stable and sensitive design not easy task... AI will not help to do that task. Carl is testing one of my units now

Finally someone who says the right things!
Now I can die happy!
Do you have a video of that detector?
To see and hear even a few seconds of behavior?
...
I only use AI for mockery and joking. And of course, because I'm lazy, the AI writes me a super templates for the codes I want to work on.
I noticed a difference, Bard is much more "sensible" and acts "human" but ChatGPT knows better programming!
I requested the same code from both. I had less work to correct what ChatGPT wrote to me than what Bard wrote.

[j570]

The White's XLT detector can be set to be fully static. And I'm not writing about the pinpoint here. I don't remember how to do it, but if you read the instructions carefully you can do it. It was set to Coarse GEB and probably something else. I don't remember. But it even identified metals and by adjusting the Coarse GEB it was possible to make it so that he did not see small and medium-sized pieces of iron. The disadvantage of this solution was the high instability of the detector, requiring frequent reset. However, it was very deep.

[ysabxe]

Finally someone who says the right things!
Now I can die happy!
Do you have a video of that detector?
To see and hear even a few seconds of behavior?

There are tests on my chanel, I think you'll like separation in the ground

https://youtube.com/shorts/0FlbCPPxI...MRgNSAorzyaLF1

[ivconic]

I like it!

[ivconic]

"Master"... "Bro".... give us schematic and pcb, I need it so badly!
(Joke of course, that's the usual what you can expect up from now on... if more people see that video)