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#327
02-21-2021, 12:41 AM
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Good night to all friends! Inside the detector head there is a coil equal to the DCH, with no surprises of finding something different. The Infrared model used is the L14G2 TO-18 DIP3 Silicon phototransistor. I already had the FG-80, FG-90 and all of them the infrared scheme only brought me false signals, because when pointing in the direction where there was sun and then towards a shade of a tree, the infrared already gave a sign, this change of infrared visual frequency caused him to trigger the detector. I was able to resolve and eliminate these false signals by placing a piece of electrical tape over the infrared. These infrared do not have a filtering system, and any change in the visual spectrum it triggers, to be efficient, it would have to have a filtering system for about 700 to 740 nanometers, this visual frequency would be within what we want to use in our detectors.
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#329
02-21-2021, 09:03 AM
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I haven't the same problem and tried to do some stuff..I needed base LED direction ,and not outside from the box . I Place it inside to the box with a distance 1cm from one small hole .Even the distance from the small hole into the box was critical..
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#334
02-22-2021, 06:07 AM
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Good evening everyone!
The infrared he uses on the yellow pistol is a 3-pin model mentioned in another post. I have a friend who has another model that Alonso manufactures in Paraguay. It's a handmade detector, but it works, because he went out to test the detector and the detector located an old rusty bucket buried some 25 meters away in the middle of some trees and vegetation. He paid $ 2,200 for the detector, but wants to sell for the same amount he paid, the detector is here with me, works with two 9v batteries in series. The system is very interesting, there are 5 PCBs, it is two detectors in one, and through a selector switch it is changed to one or the other detector, for long distance and short distance, and one of the detection plates is made by it , and another one is made by Mineoro, but it was crossed out to try to erase the name and model of this PCB. According to my friend who bought directly with Alonso, he said that this detector is the same as the FG-90, although I didn't see much similarity because it is all analog and does not have ATMEGA in the circuit. In this model, Alonso did not use any IR system, it is only a detection system and nothing else.
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#336
02-22-2021, 11:29 PM
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Goodnight,
I already had the FG-80 and FG-90 but I never opened any to see the circuit, a friend who opened said he had an Atmega on the circuit. I was never interested in opening one and examining it ... not to lose my guarantee of the calibration that Alonso did when he was still giving such assistance. After Alonso broke off relations with Mineoro, and no longer provides assistance with upgrades and repairs, I lost interest in Mineoro detectors. Now Alonso no longer comes to Brazil every month, and receives his commercial participation from sales there in Paraguay, and there in a small room, he builds his detectors to order.
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#338
02-23-2021, 04:09 PM
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#341
02-23-2021, 08:55 PM
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It seems that this PD also detect rusty IRON ?
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#343
02-24-2021, 05:05 AM
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Alonso never had the first word, Damasio was he!!. If i remember right.... Esteban had say that Alonso had a small percentage in the company. Now the first word has the son of Damasio... so nothing has change.
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Geo
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#344
02-24-2021, 12:58 PM
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#347
02-25-2021, 06:30 AM
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Geo
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