Whites Surf PI schematic

[Rumcajs]

how many turns of wire and coil resistance which is ideal for surfing pi

What do you think from this word: IDEAL?

the number of turns depends from both: wire diameter and coil diameter.
coil diameter is depends from your application, etc.
if you have required the original surf pi coil data's, please re-read comments fom #1.

[seadoggy]

anyone can Help i finish Surf PI,but i have problem!when i conect to 12 volt battery surf pi producing too low noise(bipping),when i remove NE 5534 sound continue bipppiinng!!what is wrong whit my surf PI.

[paku]

i got same problem like you!!!
but no one give instruction street to the point
HOW To FIX

[joop]

Does the sound change when you turn any of the pots?

[paku]

my pot work is only volume and 5kpot

[seadoggy]

Does the sound change when you turn any of the pots?

yea sound change,i put all new IC same problem!,any idea what is wrong?

[seadoggy]

here is some pic,pls help guys

[paku]

i think there are secrets about this project
thats y no one talking about how to fix huhuhuh

[joop]

Paku, you told me you have an oscilloscope, why don you post some oscilloscope pictures of PCB measurements?

[paku]

i have but i dont know how to test point on that pcb

[paku]

joop u ar right

i use the oscilloscope test point at the coil and i try tune the pot now the sound is gone
so i think the problem is coil right i use 6 diameter 20round wire
now no sound but i must make the new coil

[seadoggy]

i think there are secrets about this project
thats y no one talking about how to fix huhuhuh

i dont think its have secret heheh,how much u have volt where you hook up speaker and also in coil?i have 8,++ volt in place where connect speaker in a coil 0,56 volts

[paku]

sometimes we need to talk even though we have yet to accomplish anything but it is an idea that will come
Thanks ALL
Thanks Joop

[paku]

This Is My oscilloscope Read test point to coil is that right or wrong

[paku]

i dont think its have secret heheh,how much u have volt where you hook up speaker and also in coil?i have 8,++ volt in place where connect speaker in a coil 0,56 volts

i dont test wtih multimeter
i just tune it with scope i put the test point on the coil connect to pcb and i try tune the 5k pot now the sound has gone