Delta Pulse

[Speedy_G]

tahnk you porkluvr

any body can to make adc(analog digital converter) for use in delta to sence betwin gold & metal?adc show change voltage or frequency or current to graphic per cent in lcdcan make with avr or pic or .. micro procesor

Hi Alonejax

I think that there has been an improvement in the development of the Delta Pulse 3. As you very well know, this version of the Delta Pulse has suffered much from instability problems and is very sluggish in its detection response.
The turkish site has posted some information on a modified Delta Pulse 3 which is now called Delta Pulse III S and the circuit is reminiscent of the Crazy-Star-1 lite version. If the Delta Pulse III S is able to discriminate between ferrous and non-ferrous metals as well as the Crazy-Star-1, it promises to be an excellent metal detector.
I post here the PCB, circuit and bill of materials for anyone who may be interested in it. However, we will need the hex file for the PIC18F452 microprocessor. Hopefully, someone out there may be able to help us with this. I hope that the software for this promising version of the Delta Pulse III S will not be a 'crippled demo' but a version with, say, 500 on/off cycles like the PIM-2 detector, so that the amateur detectorist can go ahead and build this one.
Obrigado

Ciao

Speedy_G

[Jose]

Speedy-G
Thank you for your extensive reply.
Jose

[Speedy_G]

Hi Speedy-G
Can you tell me if the PIC18F252-I/SP, can function in the circuit instead of PIC18F252-E/SO discriminator.
Thank you. Jose

Hi Jose

I found a schematic diagram of the Delta Pulse 2+ LCD for PIC18F252-I/SP on the internet, which is the one that I followed. I did NOT use the PIC18F252-E/SO part as the latter is a surface-mounted microprocessor. However, if you have any difficulty in obtaining the Delta Pulse 2+ logo when you switch on the LCD at the start, it could be because the start-up delay is too short and generally the PIC would need to be reprogrammed with a longer delay to allow the LCD to receive the data timeously.
Alternatively, As I mentioned in a previous post at the Thunting forum, another reason why the LCD was not working very well could be the result of using an LCD module from a different manufacturer (some LCD modules from the 'East' are notoriously slow in accessing their data). For example, with some of these LCD modules, the Delta Pulse Logo did not appear automatically and only garbled letters appeared on the top row of LCD screen. This situation occurs when one uses the LCD models WH1602b (Winstar), DEM16216, GDM1602A or LMB162GDC (Topway) - this was much improved without changing the software (hex file), but using a different LCD model, such as ACM1602S (American Zettler Inc), MC1602J-SYL (Everbouquet) or DV-20400 (Data Vision). I found that these LCD's that worked with the Delta Pulse 2+ were more expensive than the ones made in China.
Hope this answers your question.
Obrigado

Ciao

Speedy_G

[Jose]

Hi Speedy-G
Can you tell me if the PIC18F252-I/SP, can function in the circuit instead of PIC18F252-E/SO discriminator.
Thank you. Jose

[aaksts86]

hello .. can help with my delta problem ..... sorry i have very bad english ....


i make delta pulse .... and connect to 12v and i have sound .... then i push button autotune .... but sound not get lost .... if i pushe 20x button autotune sound will down .. but after 3 second sound will back ....... then i replace lf357 to tlo81 or lf356 ..... and autotune button work good .... but when i connect coil 25cm 4om paralel 390om.... and tune all whit ossciloscope .... metal find very bed and sound prevent - sound respond after 2 second


i use in dp ne555 ne556 hef4358b hef4066 and tl072
whit lf357 video
what wrong??

[Speedy_G]

Hi Attilawap

The Delta Pulse 2 PIC16F676 LCD display does not allow to discriminate between ferrous and non-ferrous metals. However, Delta Pulse 2+ which uses the PIC18F252 LCD display provides a reasonable way to discriminate between ferrous and non-ferrous metal provided that you calibrate and tune the LCD circuit very carefully. All the files for the Delta Pulse 2+ have been posted on this forum, and you can access them at the following two URLs (thanks to Freedan3d and Japanese). The second URL contains the demo version of the hex file for the LCD which was posted by Japanese. The file name is disc.rar and the password for the RAR files is: jap.

http://www.geotech1.com/forums/showthread.php?8003-Delta-Pulse/page59

http://www.geotech1.com/forums/showthread.php?8003-Delta-Pulse/page68

I have the full version of the hex file for the PIC18F252, but we would need to obtain permission from Elbombaci (Uykusuz, Sleepless) if we can upload it on this forum. Alternatively, if anyone has the full hex file for the PIM-2 version 5 or 6 (not demo), I will arrange a fair exchange for my file.
Hope this helps.

Ciao

Speedy_G

[Attilawap]

Hy Everybody!
Please help me! I searched all in the internet the Delta Pulse PIC18F252 LCD display circuit, but i dont found them. Somebody can I help me?
Second question: I have a PIC16F676 LCD display shematic and circuit. This LCD circuit can be discriminate different material metals? Or not?
Your Sincelery: Attilawap

[alonejax]

hi dear kt315

hi alonejax, what sizes of coil you mean? I used only 1x1 m coil in my practic.

i want to make 40*40 coil please



some boady let me this coil have better sens than normaly coil
is it tru?
thank you for replay

[o_shq]

THAX

THANK YOU SIR I WILL DO THAT AND I WILL BACK SOON THANK YOU AGAIN

[kt315]

count for one hunting day

[kt315]

hi alonejax, what sizes of coil you mean? I used only 1x1 m coil in my practic.

[alonejax]

hi porkluvr & kt315
can you guide me to make nice flat coil for dept please?
thank you

[mak22]

It's hard to help from here.
I can only say that the TL062 is not power device. Its power consumption is very low so not to take temperature.
Check the PCB and compare with the scheme, it is likely that there is any short circuit between the tracks, use a magnifying glass. Check the value and the correct installation of the nearby component.
Replace the TL062, may be damaged.
regards

[o_shq]

HI DEAR
> PLZ IF U CAN HELP ME ABOUT SNIFFER XR 71 THAT I HAVE A PROBLEM WHEN I ASSEMBLAGE THE DEVICE
> I HAVE 3 PROBLEMS
> 1. WHEN I CONNECT THE LOOP THE FUSE BURN OUT I TRY TO FIND ANY SHORT I DIDN'T FIND ANY THING.
> 2. THEIR IS SEPARATION I DON'T KNOW THAT IN THE CCT. CARD OR IN J1 & J2 IT WORK Intermittently.
> 3. THE RANGE WITH 1 METER LOOP IS JUST 30 CM.
> I APPRECIATE UR RESPONSE SO MUCH & THANK YOU.
>

[mak22]

I did not find bc546 possible use c546