Surf Pi Professional Pcb's back in stock - NEW Prices

[6666]

Hi All
I got my surf PI working today
replaced a blown 4093
and a way she went, I need to put it in a box
and tune it up , looks like a bit of ringing on pin 6 of 5534, but its working

The coil is nothing special, 21 turns .41mm , 9 inch Dia.

detects an Australian 20cent coin at about 7 inches, small gold ring about 6 inches

[6666]

3x3.7V

Hi misko, I thought about using them to
thanks

[misko]

I used a battery of leptopa 3x3.7V = 11.1V-function normally. All this fitted into a silicone tube. see Fig.

[6666]

Hi all
what battery voltage have you been using on the surf pi , 12v ?
thanks

[misko]

I could not find, where it would be published. amp (via resistance) and led I was bound instead of ice piaza. through a switch you can choose any three items.

[6666]

I can see whats going on now, I have almost finished my surf pi 1.2 board, and just got to far right hand end of the board,
and I have noticed that for some reason on this board the "threshold" control is now called "tune"

[6666]

it works as sens / performance regulator inrcease or decrease depth

Hi thanks,
has the additions to the schematic been published any where ? is it a mod to the 555 timer ?
I would be interested in trying it, I have almost finished building my surf PI

led diode and amp. control is much more sensitive than piazo kontrol.

Has that mod been published ?
cheers

[misko]

led diode and amp. control is much more sensitive than piazo kontrol.

[bernte_one]

Question for bernte_one


I see on your surf pi that you have 3 controls
what function is the tune control?
thanks
6666

it works as sens / performance regulator inrcease or decrease depth

[6666]

Question for bernte_one


I see on your surf pi that you have 3 controls
what function is the tune control?
thanks
6666

[Hyfalcon]

Could you PM me the total for 2 pcb's plus shipping in USD? Paypal is no problem. Thanks!

[silverdog]

You can now purchase direct from a shop I created, if you have paypal

https://www.silverdog.co.uk

If you do not use paypal you can send cash, pm me for address

[Hyfalcon]

PCB's

Do you still have any PCB's for sale? If so, then please pm me the payment info. TIA

Hyfalcon

[bernte_one]

professionals do it also

see here they also use a crutch

http://kts-electronic.com/content/view/16/57/lang,de/

or did the made a mod to the lower part seen also at russian forum

i will try a plastic lower end hope i got the right size in diameter at my hardware store

[bernte_one]

Why the lower part of the detector made of aluminum ?.... Need to be made from steel!

I have thought about stainless nonmagnetic steel or a complete plastic shaft for the lower part. But steel increase the weight and it is not so easy to work with. I dont know whether there is a big bad inluence from the lower alu part. In ratio to coil it dont move but it could have an impact to my magnetic pulse field?