Whites Surf PI schematic

[maxm3s]

was very good captain art3000 to envy me if you have a good depth, send me your project with pvc
congratulations maxm3s

[captainart3000]

http://farm6.staticflickr.com/5546/1...5335de9a_b.jpg Check out my Pipe Monster PI Used ABS pipe from home depot. Made for snorkeling and to be abused. All pots are under screw caps so is phone jack. Has external led to be used underwater without headphones. Just thought someone might like the pipe idea and decided to share. Let me know what you think.

[captainart3000]

<imgsrc="http://farm6.staticflickr.com/5546/1...5335de9a_b.jpg"/>
[IMG src]http://farm6.staticflickr.com/5546/1...5335de9a_b.jpg[/IMG]Check out my Pipe PI monster. Pots are under watertight screw caps so is a phone jack. When jack not used led lights up instead so you dont need headphones underwater. I made it to be able to snorkel with it and look for cool stuff in carribean sea The only thing that needs to be sealed is a nozzle where wires coming out of. I thought that someone might like the idea of using ABS or PVC pipe and decided to share it. Let me know what you think. Used Surf PI 1.2 in 1-1/2" ABS pipe. First barrel holds pots and pcb, second barrel holds batteries and phone jack. Not the lightest design but for starters will do

[maxm3s]

test done on the beach

[multieagle]

Just an update on my odyssey toward a successful Surf PI build. Thanks to a couple of friends, IT IS A DONE DEAL! Yeah, second time around with the same board. In a previous incarnation best I could do was around 4-5" hooked up to a 5" copper shielded coil (folded over figure eight). Using the same coil and 5g 18k man's ring, I can now detect to around 10" or 25cms. The wiring has been simplified and it is very responsive and easy to calibrate. As per another thread, will probably replace the present delay to a 5K1 resistor with a EXTERNAL, Single Turn, 10K POT. Intend casing it for water hunting.

The increased depth seems to be related to a sweet spot on the delay. As I enter it, the steady "threshold hum changes to a pulse". If I'm outside that setting, the steady hum returns, which can be increased or cancelled through the Threshold trimpot. Is this normal? Hell, I'm not complaining over the increased depth!!!!

HH

[mohandes]

Friends my drew surf pi

thank you

[Falcon]

HI GEO

I NEED HELP!

I FINISHED THE WHITES SURFMASTER PI.
BUT... NOT WORK.
WHEN POWER IS ON I CAN HEAR ONLY A CONTINUOUS BEEEEEEEEPP....IF I DICONECCT THE COILS THIS SOUND STILL CONTINUE.
ALL VOLTAGES ARE NORMAL AND I CHECKED PCB, CONNECTTIONS ETC.
I WOULD LIKE TO KNOW ABOUT WHAT COIL CAN I USE???

THANKS IN ADVANCE

DIRCEU

hi Dirceu
I am having the same problem you had, as mentioned at the beginning of forum (page 1).
How do you fix the problem beeeep and low sensitivity?
thank you in advance.

Falcon

[walkman]

Friends my drew surf pi

[maxm3s]

layout board

hello walkman could send me the board layout
Thank you, Max3s

[mohandes]

lack the ceramic capacitor to generate +5 and -5 volts

ok
i put it in 7660-7 and +5
in your pic that you send i think you use two parralel cap 470Uf(ok ?)
thanks
can you tell me about your coil ?

[maxm3s]

lack the ceramic capacitor to generate +5 and -5 volts

[mohandes]

test pi surf http://www.youtube.com/watch?v=25g47-4Y7m8&hd=1

can you send me correct psb
thanks

[maxm3s]

test pi surf http://www.youtube.com/watch?v=25g47-4Y7m8&hd=1

[mohandes]

my pcb.

Friends, Would you please check the error. Is this the latest updated version?

ok i think your pcb ok
just please past your design here
thanks

[daverave]

i have now finished my first surf pi detector and have modified to work at 1500 hz and 100 ma current...i have now far better proformance and can detect a thin 9ct gold ring at 12 inches depth which im very pleased about....i could reduce the audio down lower using a 4024 ic but the 1500hz is just about bearable in my ear.