northwest QED update
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australian electronic gold prospecting forum.com  |  Pi metal detector by Bugwhiskers  |  QED Detector ,latest updates  |  Topic: QED update 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: QED update  (Read 56158 times)
redcaveman
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« Reply #300 on: Friday January 13 2017 07:58:05 AEDT AM »

hi bugs ,
from all reports so far, looking good  whohoo Clap Hands
red
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Davent
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« Reply #301 on: Friday January 13 2017 11:00:18 AEDT AM »

I reckon it was looking good as soon as the big company men started bagging it! I made my mind up to buy one the 2nd day of the announcement, one of the reasons being the attack from the knockers, personal attack, and the way they tried to tell us all how much of a failure it would be, then they went on the attack about warrenty etc, sounded desperate, like they were threatens by it or something. I will order mine as soon as I've paid some badly timed bills.
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redcaveman
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« Reply #302 on: Friday January 13 2017 11:29:56 AEDT AM »

hi davent
i have noticed some backing off with the boots or even gone silent by some hmmmm,
maybe they have placed an order for  Qed and dont want any of there ml mates to find out ,lol
im just glad we have an oz detector again
small company , listening to what people want
cheers red
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Huego
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« Reply #303 on: Friday January 13 2017 12:01:02 AEDT PM »

  

I reckon it was looking good as soon as the big company men started bagging it! I made my mind up to buy one the 2nd day of the announcement, one of the reasons being the attack from the knockers, personal attack, and the way they tried to tell us all how much of a failure it would be, then they went on the attack about warrenty etc, sounded desperate, like they were threatens by it or something. I will order mine as soon as I've paid some badly timed bills.


Yes Dave, for many years the QEDs existence was denied then disparaged, (as have its developer Bugs & its supporters), even accused of being a copy etc etc. A sure sign they were worried what was being said about it here was right on the money. Unconscionable delaying methods were even applied to Bugs. A saying goes “it requires a common enemy to unite (polarise) us” . How true that has been!

Test reports will be coming in from a number of quarters from most states it seems over the next few months. Then prospective buyers & skeptics can make up their own mind, accept it or not, buy one or not, find gold with one or not.

But I was wrong about Reg having "a production model". He was SOLD, so he didnt have to a wait, a pre-production prototype (with a port for software modification, if required). But as Inhere says, thats not unusual. Reg & designers would also know that from the past. If its functionaly is the same as a production model it will make no difference to what Reg finds about its performance. A production model would have reduced the suspicions some have, but delayed his assessment.

You can see the defenders of the status quo on 4-umer already calling Reg a "joker with an agenda", and putting pressure on him for “proof”. For me his word as an experienced apostle is enough, others want more visual proof. Others want him to make a comparison with ML top performers ASAP, as if their life or future savings depended on buying or not buying it.

This stormy weather here will test its resistance to lighting-induced interference.

 happy face
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« Reply #304 on: Friday January 13 2017 12:03:24 AEDT PM »

  

im just glad we have an oz detector again
small company , listening to what people want
cheers red



Red, this is likely the hush (or rush) before the storm …. The QED will speak for itself through testers and conciencious users, not through its knockers.

Yes, great to have an Aussie designed and built PI detector available, one that’s easy to handle and affordable (without the Gold Tax). I hope Bugs can keep up with orders.

 happy face
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Davent
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« Reply #305 on: Friday January 13 2017 13:43:11 AEDT PM »

I hope he can keep up as well, I'm doing a trip to WA in August/sept and want to get some time with one here in the NT before I go. Still about a month before I can order one, and I reckon the order list will be pretty long in a months time!
Hope Dean has a good supply of 12$ evo,s!
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Doug
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« Reply #306 on: Friday January 13 2017 22:14:04 AEDT PM »

 On the  production model of the QED the only person that can update the firmware is BW. The firmware is also  very securely  "locked up" and can only be accessed by BW. The firmware in Regs detector is the same as the production QED.
doug smile
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« Reply #307 on: Friday January 13 2017 22:26:22 AEDT PM »

  
On the  production model of the QED the only person that can update the firmware is BW. The firmware is also  very securely  "locked up" and can only be accessed by BW. The firmware in Regs detector is the same as the production QED.
doug smile

BW has not only designed  the circuit and its layout for the QED but also written the S code(firmware) for the QED which is not a trivial task!
doug smile
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gef12
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« Reply #308 on: Friday January 13 2017 22:42:58 AEDT PM »

Cant imagine how many pages of code there is for the QED ..and how many pain staking hours at the keyboard Bugs had put into it... My hat goes off to him.
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bugwhiskers
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« Reply #309 on: Sunday January 15 2017 18:03:13 AEDT PM »

  
Cant imagine how many pages of code there is for the QED ..and how many pain staking hours at the keyboard Bugs had put into it... My hat goes off to him.

The QED sourcecode is around 1300 lines which equates to around 1300 instructions/data. This efficiency is achieved by writing in Assembly Language. It produces the fastest and most compact programs.

The Mode function (menu item #5) in the QED is a very important innovation, it allows the detector to be adjusted to suit the coil.
While it is generally accepted that a PI needs to sample as early as possible to detect very small/short TC targets sometimes things aren't what they seem.
A test with two 8" MONO coils on a 0.04g "nugget" (~ 1mm spherical) resulted in the following.

Coil #1 could be run in mode #1 and detect the target at a bit over 1.5".
Coil #2 needed to be in mode #3 and picked up the nugget at an additional 0.5 - 0.75 inches.

Mode #3 samples 0.8 uS later than Mode #1 yet the same sized coil gave a better result.
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greylourie
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« Reply #310 on: Sunday January 15 2017 18:10:36 AEDT PM »

What was the difference between Coil #1 and Coil #2, that made it necessary to use different modes for each one ?
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bugwhiskers
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« Reply #311 on: Sunday January 15 2017 18:28:12 AEDT PM »

  
What was the difference between Coil #1 and Coil #2, that made it necessary to use different modes for each one ?

Parasitic capacitance either from the coax or shielding.
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gef12
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« Reply #312 on: Sunday January 15 2017 20:59:42 AEDT PM »

Yes many paramaters of a coil to consider ... coax cable type and capacitance, coil to shield capacitance , coil inductance and impedance, coil wire type used , so one would think the manufactures would replicate the parent coil .. maybe they dont or should I say not exact.
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« Reply #313 on: Monday January 16 2017 09:35:49 AEDT AM »

Re  Reg Wilson.
A few things need clarification with regard to  Reg wilson.
Firstly Reg is not a member of this forum and I have had no personal contact with him at all .Nor have I ever met him except perhaps in the past at PMAV general meetings. As far as BW  goes I believe that its only very recently that  Reg made contact with him and asked could he test a QED after seeing it work in BW backyard. Reg has had no input into the design and has no pecuniary or other vested interest in the QED other than it may be useful addition to his prospecting armory due to the QED's ability to scan the ground at high sweep speeds without losing any signal  resolution or  apparently  any sensitivity/depth although more testing on deeper targets needs to be done.
The QED's very light weight and ease of use and good GB  and easy pinpointing would further enhance the ability of the QED to  very quickly cover a lot of ground when hunting for new patches which is what Reg is all about. Reg has no QED agenda other than it may be another useful tool for his prospecting endeavors.
doug smile
Edited:Monday January 16 2017 09:40:38 AEDT AM
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« Reply #314 on: Monday January 16 2017 23:05:02 AEDT PM »

 See the latest QED post on finders by  "Yellowfin."
doug smile
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greylourie
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« Reply #315 on: Tuesday January 17 2017 07:54:36 AEDT AM »

I find the two coils example fascinating. Its like Coil #2 had more "gain", enough to offer better depth than Coil #1 even though it was receiving the sample later (Mode #3).
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redcaveman
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« Reply #316 on: Tuesday January 17 2017 08:49:31 AEDT AM »

 Cool thumbs up!
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bugwhiskers
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« Reply #317 on: Tuesday January 17 2017 09:03:47 AEDT AM »

  
I find the two coils example fascinating. Its like Coil #2 had more "gain", enough to offer better depth than Coil #1 even though it was receiving the sample later (Mode #3).

The signal from the coil is amplified by the PREAMP and then processed by the the Integrator that is used as a null summation/averaging means as published by Eric Foster in 1968. An integrator works on amplitude and time. Perhaps the slower coils parasitic capacitance extends the time and faster coils provide greater amplitude.
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mylab
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« Reply #318 on: Tuesday January 17 2017 11:17:32 AEDT AM »

  

See the latest QED post on finders by  "Yellowfin."
doug


Yellowfin's reports on Page 32 are excellent examples of the QED's Mode functionality.  

Also the settings he posted for the 11" coil shows the QED does not need or require the amount / array of settings that the GPX or GPZ has on offer which could confuse the operator to use for best results.

Sometimes less is better and it appears this may be the case with the QED as more results filter in from the goldfield.
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gef12
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« Reply #319 on: Tuesday January 17 2017 12:43:19 AEDT PM »

Ye Bugs has kept it simple using the KIS strategy "Keep It Simple"
no frustrating menus to navigate thru ..less the better so you can get on with your prospecting ..thumbs up  whohoo whohoo
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australian electronic gold prospecting forum.com  |  Pi metal detector by Bugwhiskers  |  QED Detector ,latest updates  |  Topic: QED update « previous next »
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