Help HammerHead Please ....

[nick_f]

Thanks alot...

ok to help me determine the problem...

just tell me where the 78L05 in hammerhead supposed to get the negative volt.

The 78L05 is NOT supposed to get NEGATIVE voltage. If you measure between pin 2 and pin 3 (minus of voltmeter on pin 2 and plus of voltmeter on pin 3), you should have about 8V...12V.

You are probably confusing 78L05 with 79L05. 79L05 requires negative voltage on its input, in reference with the ground.

Thanks alot...
I mean what is it source exactly because when I measure volts found no any negative arrived to it.. all volts are either +v or 0v. for that reason that IC doesn't convert the volt into +5 V.

If you are not reading what I write, what's the point of trying to help you?
I said that 78L05 does not convert negative voltage into positive voltage!

Thanks alot...
and the same thing in Gary Board where the 79L05 IC supposed to get Negative Volt from ...when I measure volts found no any positive arrived to it.. all volts are either -v or 0v. for that reason that IC doesn't convert the volt into -5 V.

In Gary circuit, 79L05 is supplied with -10V on its input. This voltage is straight from the battery, it is not converted. It should be easy to obtain this voltage (-5V at output of 79L05). Are you sure you don't have problems actually with the +5V at the output of IC3?
But, let's take it one at a time. Do not mention about Gary schematic at all.

Thanks alot...
if you help me in this point I think you will solve the entire problem.
just indicate that to me ... after that I will be able to determine the problem place.

I try to help you, but you don't try to help yourself. If you were trying, you would listen to my questions and answer to them, not ask other questions.

Thanks alot...
also I was make HH power supply only without the rest of the board. and still appear the same problem .. the 78L05 doesn't convert to +5V.

You drive me crazy. I told you many times that 78L05 does not convert voltage. It only reduce voltage!!!

Thanks alot...
That I mean the problem are in the power supply in either HH Detector or Gary Detector..

Just forget about Gary detector at this stage. If you will be able to fix HH detector, by that time you will be able to repair Gary's detector as well.
If you are chasing two birds at the same time, you won't catch any...

So, please do what I recommended to you in my previous post and let me know the results. First, replace every component as in original schematic and measure voltage between pins 2 and 3 of IC2. Tell me what you measure. I believe you have 0 volt.

Regards,
Nicolae

[Carl-NC]

I mean what is it source exactly because when I measure volts found no any negative arrived to it.. all volts are either +v or 0v.

Make sure you have the (-) lead of the voltmeter connected to the (+) side of the battery... in HH, the (+) side of the battery is "ground", not the (-) side.

[TheUnderTaker]

Dear Mr. Nick...

you have to know that I am new at this filed at all so excuse me and my errors...

but be sure that I am doing my best to understand the whole thing so there is no need to driven into crazy or even get angry about that..

thanks for the info and I will made a new board and tell you the results when finished it.


Thanks and Regards...

TheUnderTaker

[nick_f]

Dear Mr. Nick...

you have to know that I am new at this filed at all so excuse me and my errors...

but be sure that I am doing my best to understand the whole thing so there is no need to driven into crazy or even get angry about that..

thanks for the info and I will made a new board and tell you the results when finished it.

Thanks and Regards...

TheUnderTaker

Undertaker,

Why are you wasting your energy building a new board, instead of finding out what is wrong with your other board ?

Your problem is not that you are new in the field of electronics. It is that you don't listen and you don't follow what we are telling you. You disregard all my attempts to help you. Every time I ask you some questions, you ignore to answer to them and strongly support your wrong ideas.
If you continue this way, you will never make any progress and any
attempt to help you is futile. There is no magic answer like "replace component X and it will start working". You need to go on a step by step approach.

Regards,
Nicolae

[nick_f]

Dear Mr. Nick...

you have to know that I am new at this filed at all so excuse me and my errors...

but be sure that I am doing my best to understand the whole thing so there is no need to driven into crazy or even get angry about that..

thanks for the info and I will made a new board and tell you the results when finished it.


Thanks and Regards...

TheUnderTaker

Hi Undertaker,

Did you start building the new board for the metal detector?
I was thinking, if you need help with your faulty boards, if you can send them to me (in Australia), I could fix them for a small fee (plus cost of faulty components). I could also let you know what was wrong with the boards. Or I could still try to help you in this forum, provided you answer to my questions.

Regards,
Nicolae

[porkluvr]

you have scope

UnderTaker.

Most wise people who attempt to build projects of this complexity will have an oscilloscope to use for troubleshooting and setup.

You DO have an oscilloscope, don't you?

Never mind, that was a rhetorical question because I think I already know the answer.

It boggles my mind how people will strive to do things the hard way instead of using proper tools.

[TheUnderTaker]

yes I have oscilloscope and I have good news about the Hammerhead and Gary detector also...

just wait and I will show you the new results..

thanks for replay...

[TheUnderTaker]

Thanks Nick

Dear: Mr. Nick...

Thanks for all of your efforts and I really appreciate every single word that you have written to help me..

and I am sorry for confusing you with me .. I have many wrongs at my start in this field...

and in few days I will give you some good news about HammerHead.


Thanks again..

TheUnderTaker.

[mesy64]

Greetings to all friends
What is Depth detector for detecting large metal loop 1 *1 ?
The sensitivity of this metal to metal copper and gold is how much?

[cko47]

Make sure you have the (-) lead of the voltmeter connected to the (+) side of the battery... in HH, the (+) side of the battery is "ground", not the (-) side.

Mr. Carl
Do You have own website concern your hammer projectt?
I can not find in web. Sent to me URL.
Thank You

[kt315]

Mr. Carl
Do You have own website concern your hammer projectt?
I can not find in web. Sent to me URL.
Thank You

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