It really is a shame. It could be part spec issues, not all of them looked first rate. They could also allow for more tuning by adding other components, but it cost $1 plus shipping. If you read their examples I included in the description, you'll see they have some pretty far fetched ideas about their product!
Here's another metal detector kit "$2 Metal Detector Kit" ruclips.net/video/CjxRlnMX7w4/видео.html
Great video … I just bought the kit off eBay .. I didn’t presume it would come with a diagram so I’m glad you made yours
Shame that it turned out to be junk. Maybe one of the components is bad or out of spec from the factory.
It really is a shame. It could be part spec issues, not all of them looked first rate. They could also allow for more tuning by adding other components, but it cost $1 plus shipping. If you read their examples I included in the description, you'll see they have some pretty far fetched ideas about their product!