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Offline popka-ru
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« Reply #80 on: July 20, 2016, 02:21:00 pm »
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sorry Embarrassed difficulties with English.

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« Reply #81 on: August 16, 2016, 01:08:30 pm »
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What is the maximum range of this detector?

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« Reply #82 on: August 16, 2016, 03:04:08 pm »
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Not sure.  No one said anything about it.  

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http://www.digiwood.ee/8-electronic-projects/2-metal-detector-circuit


There is a extensive post on the Geotech forum.

I found this post.



Teemo
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    Working prototype with same firmware as published, can detect 10cent euro coin at about 5cm in air. Coil is 20 cm diameter, 27 turns of 0.75mm2 electrical installation wire on wood former, very robust, without shielding.
    So it is not very sensitive, by treasure hunters standards, i guess. Still more like poor man's, ultra simple to build detector.
    I can't do field tests outside this time of year, because of thick snow and cold weather. But i have scanned some logs for for hidden metal, for this it was perfect. This is why I got into this metal detector building the first place. Havn't done treasure hunting at all.
    Teemo



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« Last Edit: August 16, 2016, 03:19:18 pm by homefire »
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« Reply #83 on: September 30, 2016, 06:31:48 am »
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Hello I have built this detector but I am having trouble getting it to work I have tried different coils and capacitors and can see decaying oscillations on the oscilloscope but all the pic does is a single beep and flash of the led.closing the push switch just causes a reset of the pic ,any ideas?

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« Reply #84 on: September 30, 2016, 07:25:51 am »
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Quote:Posted by jaypay
Hello I have built this detector but I am having trouble getting it to work I have tried different coils and capacitors and can see decaying oscillations on the oscilloscope but all the pic does is a single beep and flash of the led.closing the push switch just causes a reset of the pic ,any ideas?


Hello.
One thing that comes to mind is that the swich may accidentally be normally closed contact. Must be normally open contact. Worth to check.
Also I have updated the firmware hex file on my webpage for this project some days ago. Accidentally it was from the older version, different from the source code. Should be fine now.
Regards
Teemo

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« Reply #85 on: September 30, 2016, 03:14:21 pm »
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Thanks for the fast reply Teemo I will check the hex file that I have been using.

Posted on: September 30, 2016, 01:56:28 pm
the hex file I flashed is 5K and the new one from your site is 4.78k so will flash it and report back.

Posted on: September 30, 2016, 02:02:34 pm
flashed metaldetector.X.production180.hex now get Four quick bleeps and led comes on .push switch seems to reset .maybe I have a pic programmer problem.

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« Reply #86 on: October 02, 2016, 12:16:23 am »
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Hello. filled the new firmware in the controller PIC12F1840. does not work. then I noted in the description that the controller under this firmware has changed, and the scheme remains the same. explain the controllers to be installed on the same card, you need to change the conclusions or they compatible? scheme has changed or remained the same?  or is it just a typo but you name PIC12F1840 and PIC12F1480?

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« Last Edit: October 02, 2016, 12:28:31 am by popka-ru »
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Offline TeemoTopic starter
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« Reply #87 on: October 02, 2016, 02:36:40 am »
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Quote:Posted by popka-ru
Hello. filled the new firmware in the controller PIC12F1840. does not work. then I noted in the description that the controller under this firmware has changed, and the scheme remains the same. explain the controllers to be installed on the same card, you need to change the conclusions or they compatible? scheme has changed or remained the same?  or is it just a typo but you name PIC12F1840 and PIC12F1480?


Hello popka-ru

I understand you had it working with some previous firmware version. What exactly do not work with the new version? Do not power up at all, or no detection, or something else?
The PIC and the circuit is still the same and compatible from the first version. With the name it is just a typo.

Regards
Teemo

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« Reply #88 on: October 02, 2016, 04:41:08 am »
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not now in general is included. from a previous run, and through at least once.

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« Reply #89 on: May 13, 2017, 07:23:21 am »
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thanhs teemo for this project .
can you send me source coad plz
not hex or asm file i need full source coad
i want to edit soft ware for another pic please

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« Last Edit: May 13, 2017, 07:26:45 am by ashrafatteya2005 »
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