Hi GoldFinder
This is my first built MD, so I'm trying to get my head around the circuit and how it actually works. At the moment it's not great, but that might be because I'm testing it in a steel shed, with reinforced concrete floor, a steel workbench and pretty much a bunch of steel around me. So yes I will test the distances, but it might be a week or two before I can get it out of the shed in a working form. BTW, I'll have to use Australian coins, but should get an idea.
Thanks everyone.
PS. Just on the point of trying to understand how it works, is it recommended to build one of the Hammerhead varieties? (I think I just answered my own question)
-
What kind of depth?
Great Job - success is wonderful ! Would you mind measuring air detection distance on some know coins like a quarter, dime, and penny to give some idea of the sensitivity.
GoldfinderLeave a comment:
-
Hello Ant,
Nice you have it working. And yes I made the pcb design, but the real genius was Mr. Lahr the inventor and of course White's that make's the real Surfmaster.
Have succes with it !
ApLeave a comment:
-
My Surf PI works - thanks Silverdog and ApBerg
Hi Everyone
Sorry if this thread is in the wrong place, mods feel free to move.
I ordered a couple of kits from Silverdog a few weeks ago, they finally arrived yesterday (slow post to Aus).
Soldered the board up last night over a few beers, hooked up the coil (thanks for the instructions ApBerg and Qiaozhi for the calculator) and power supply but only got beeping no matter how much I fiddled with the pots
. Decided it was time to go inside have more beers and think where I might have gone wrong.
Coming home from work today, straight back to the shed, noticed I'd left the two wire joins off the board, soldered them in and woohoo it worked.
Thanks Silverdog for the excellent kits.
Thanks ApBerg for the design (I think it was yours) and the coil help.
Thanks Qiaozhi for the coil calculator.
Ant.
Leave a comment: