Uni-Byte 0169 - EASY Metal Detector Kit - MORE than a TOY?
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- เผยแพร่เมื่อ 16 มี.ค. 2024
- Last in a series of 3 kit builds for you to enjoy while I'm away on vacation. This little metal detector seems to simple to work. I got this because I like kits that are potentially useful. We'll have to see if this is the case here.
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Metal Detector Kit:
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You know, I quite liked the jazz playing while you built the kits. It rather fit the vibe.
Thanks. May bring it back from time to time.
I just realized how great these little kits would be as a technical interview for electronics repair jobs. Test the soldering, give a basic schematic for them to analyze, and a solid works/doesn't work indicator based on the beeping. And then at the end of the day, they get to take home a cool thing.
It's actually doing the work, unlike the paper interviews.
New viewer here, videos seem good as is, not sure if the montage is needed or helpful, but it works as-is.
That's a great idea!
Adding an extra potentiometer in parallel or just a resistor with a value less than the max resistance of the original potentiometer (in parallel) should allow you to have better control of the alarm range. Having the antenna separated from the circuitry via extension wire will also help with preventing false alarms.
Some good ideas, thanks!
USA fella here, just randomly got recommended this. Very cool video (regardless of me knowing VERY little about electronics)
Really appreciate your having a look, thanks!
Used to install cabinets. Use a magnet to find screws, and by extension, studs. More reliable than anything electronic.
But not nearly as much fun!
Nice little kit!
Thanks.
Yes, a build exceptions/summation is better than an accelerated montage. You can't really see anything, or learn anything, from those. I have seen several other YT videos of this kit build. Their results were poor; the device did not really work much, at all. Even though this is a simple circuit, for you, it is not so for everyone. I suggest going through the schematic, to explain the circuit's operations, on every video. Sometimes, these Asian kit circuit's do something unique, or unexpected (usually to save on cost.) We can learn from those tricks. HTH. Thanks.
Good advice, thanks.
Neat little kit.
I have eyeballed those a few times, just for practice.
I wonder how many ways you can mod that to go deeper, like in the ground.
The music didn't bother me one way or the other.
Nice video.
Not sure you could mod it much without doing a new design.
At that price I ordered 3 of them. I expect to mod the Hell out of them. Put in a pot that allows me to set the sensitivity right on the edge, and try adding big loops. More gain. Fun toy. Some of your musical choices were quite nice. But I can listen to my music here while I watch your videos, so the music doesn't really mater. Thanks.
Thank you.
@@uni-byte thanks for a clear image of the assembled bd. Mine came with no instruction sheet, so you saved me about 15 minutes figuring out what had to go where for it to work. As a reverse engineering job it's no big deal, and I do sometimes enjoy reverse engineering, but these things offer no challenge, so no fun to reverse engineer, just a bit of wasted time. So it's more convenient to just solder the first couple together and call it good. Then do the mods on the 3rd one. I need to read up on the theory of metal detectors. At a glance it looks like the coil reverses itself between the top and bottom of the board, which I guess provides a nulling affect. That coil appears to be the key to the circuit design. I built a Theremin kit as a kid and used it as a hokey metal detector a few times. It worked, but not at all well.
@@johnwest7993 You're welcome. Yes, it's just simple blocking oscillator (like on a jewel thief). As it get's closer to metal the coupling in the transformer increases to the point where it can support oscillation.
Classic kit !...cheers.
Thanks.
Yeah, if you put those type of switches in backwards they still work, just backwards as you supposed. I love music on it's own, but find it very annoying while watching tutorial videos.
Good to know! Thanks!