PICKINI - an easy to build PI detector

[WM6]

Great work gurdal. Thanks.

[nick holas]

hi,
could some one modify the programme (with authorization of f117 of course )to use it with another easiest to find pic like 16f630 or better 16f28 or another,f117 said me it was possible but im noob with pic language so !!!!.
thanks
look at my smallest pcb of this amazing project.

[F117]

Bonjour Nick,
Nice work on the PCB

Instead of putting energy in porting the code to another PIC flavour:
If you want the 16F1824 within a couple of days: order them with Farnell - France:
http://fr.farnell.com/microchip/pic1...44?Ntt=16f1824

cost: 1.57€ for 1 piece.

Success,
- Bernard

[nick holas]

hi bernard
your right , simplest.
i haven t think at farnell .gotro.. sell me that pic but only x5 so 1.80x5 cost lot just for one metal detector (i just need one!!)
thanks again.

[bernte_one]

hello nick

nice layout!
would you post the layout files direct here for changing them (colors, markings...)
is this for sprintlayout?

kind regards

[nick holas]

hi bernte one nice to read you .your posts on another threads help me a lot to finish my project (particularly for barracuda ,then tgsl ,idx pro etc...)
could you tell me how to do or could i post you directly by mail ?
i have made a lot of sprintlayout board retraced of some metal detector modified like idx or tgsl etc...(some resistor are not very well placed ) if you are interested tell it.
thanks

[bernte_one]

hello nick
send you p.m.
many thanks

[6666]

johnandles
Did you use the "contact" method to make the pcb for this project ?
is there a link to the instructions for useing contact ?
We spoke about this briefly on a thread somewhere, but when I run the contact
through the laser printer it crinkles and shrinks with the heat.
The basic info I have is you first print the PCB on paper to see where the pcb is being printed
then cut out a piece of contact and stick it over the pcb printing
then run the paper through the printer again to print on the contact.

[nick holas]

hi 6666
for my projects i use a scotch tape (not for pupil ) but for windows or furniture (i use paper not the sticker of course )it cost 2€ for 10 meter so you can do a lot of pcb.simply print your layout on the shiny side of the paper (perhaps you'll have to do some test) .or you can try with a photo paper for ink printer but not the glossy paper ,i used matt paper.

have a sunny day because in france it's again and again rainy!!!!!!

[johnandles]

johnandles
Did you use the "contact" method to make the pcb for this project ?
is there a link to the instructions for useing contact ?
We spoke about this briefly on a thread somewhere, but when I run the contact
through the laser printer it crinkles and shrinks with the heat.
The basic info I have is you first print the PCB on paper to see where the pcb is being printed
then cut out a piece of contact and stick it over the pcb printing
then run the paper through the printer again to print on the contact.

Hello 6666, yes I did use the 'Coles' book covering' here in OZ
The contact has to be unpeeled from its backing (hope that doesn't sound condescending) then stuck over the previous print.
Use a credit card to Iron out any wrinkles, (this is important)
Then re run through the laser again on high resolution.
Then Iron on as usual.
It worked for me.
I have previous pictures posted here and It is a working detector..(on the bench, at this stage).
The info should be on an 'Industructables' web site.

Hope this helps
Cheers
John

[6666]

Thanks John
and you had no problems with heat related crinkling on second run ?



Thanks also Nick, I will try and find some info on your paper.

[johnandles]

Thanks John
and you had no problems with heat related crinkling on second run ?

No 6666, just a small buckling as it cools down. I placed the print between some unused
PCB material.No probs.
What laser printer are ur using.
cheers
john

[Toros]

Hi F117!
Look carefully at the detector scheme and see that the transistor BS170 is shown as NPN transistor. Datasheet Fairtsild Semiconductor says BS170 is N-Channel Enhancement ModeField Effect transistor. What is true NPN or N-channel.Is it possible in the circuit diagram be considered NPN transistor BC170?

[F117]

Hi F117!
Look carefully at the detector scheme and see that the transistor BS170 is shown as NPN transistor. Datasheet Fairtsild Semiconductor says BS170 is N-Channel Enhancement ModeField Effect transistor. What is true NPN or N-channel.Is it possible in the circuit diagram be considered NPN transistor BC170?

Hi Toros,

The transistor on the PCB is a really a BS170 MOSFET. I used the symbol of an NPN transistor in Eagle, just to get the PCB layout right with the 3 legs aligned in a row instead of triangular. I know you can create your own components and I did for the combination of potmeter/switch.
This transistor is just a level translator, should work also with an NPN transistor.

Best regards,
- Bernard

[Toros]

Thank you F117!
I have another question. What is the role of the resistor with zero resistance. Can it be replaced by a bridge of wire.