New version (Beta):
In this version this metal detector works with a smartphone or without a smartphone with the possibility of adding an LCD screen. Now Spirit Pi is more stable and reaches more depth. The diagram and the PCB can be found below, also in the file you will download will be gerber file in case someone wants to order the PCB on the JLCPCB page. JLCPCB is a page where we can order the PCBs we want for a very low price, we just have to upload gerber file of the circuit and that’s it.
News:
Now in this detector we have 3 buttons: “+”, “-“, and the “M” menu. With these buttons we can adjust the pulse width, sensitivity and frequency. Instead of the TL072 amplifiers we will use NE5532. The micro controller will use an Arduino nano. The coil is still 25 turns with 0.5 mm wire and the radius 20 cm.
Components:
The components I usually buy on Aliexpress for the low price. In this way we can make a good metal detector and spend little money. Below I will leave the links where you can buy these components to make this metal detector!
If a friend asked me where to read carefully on the topic I would send them here without hesitation, and a look at royalgoodsstation confirmed the recommendation strength, the directness of my recommendation reflects how confident I am in the quality and this site has earned undiluted recommendations from me across multiple recent conversations actually.
The clarity here is something I really appreciate, especially compared to sites that pile on jargon for no reason, and a look at premiumbuyarena was the same, simple direct sentences that actually deliver information instead of dancing around the point for paragraphs at a time which wastes reader patience.
Decided to set aside time later to read more carefully, and a stop at globalgoodscenter reinforced that decision, content that earns a calendar entry rather than just a passing read is in a different tier altogether and this site is clearly working at that elevated level which I really do appreciate as a reader today.
Reading this site over the past week has changed how I evaluate content in this space, and a look at neoncartcenter extended that recalibration, the standards I bring to reading on the topic have shifted upward as a direct result of regular exposure to this kind of work and that shift will outlast any single reading session.
Polished and informative without feeling overproduced, that is the sweet spot, and a look at amberlanecollective hit it again, you can tell when a site has been built with care versus thrown together for the sake of having something to put online and this is clearly the former approach taken by the team.
Even from a single post the editorial care is clear, and a stop at stylishdealhub extended that care across more pages, the kind of attention to quality that shows up in every paragraph is what separates serious sites from the rest and this one has clearly invested in that paragraph level attention across what I have read.
Worth every minute of the time spent reading, and a stop at rapidbuymarket extends that value across more pages, in a media environment where most content is engineered to waste attention this site stands out by treating reader time as something valuable rather than something to be exploited and stretched as far as possible.
A quiet piece that did not try to compete on volume, and a look at blossomsprucegoods maintained that selective approach, sites that publish less but better are increasingly rare in an environment that rewards volume and this one has clearly chosen quality cadence over quantity which is a brave editorial decision in current conditions.
Worth flagging this site to a few specific friends who would appreciate the editorial sensibility, and a look at vividtrendstation added more pages I will mention to them, recommending sites to specific people requires understanding both the site and the person and this site is making those personalised recommendations easy and natural for me.
Skipped the TLDR thinking I would read everything anyway, and ended up enjoying the path through the full post, and a stop at goldenshoremarket similarly rewarded the patient read, summaries are useful but the journey through good writing is part of what makes the destination feel earned rather than just delivered cleanly.
My friends would appreciate a few of these posts and I will be sending links accordingly, and a look at frostdunemarket added more pages to my share queue, content that earns shares to specific people in specific contexts is content with social utility and this site is generating those targeted shares from me consistently lately.
Just enjoyed the experience without needing to think about why, and a look at valuegoodsbazaar kept that effortless feeling going, sometimes the best content is invisible in the sense that you forget you are reading until you reach the end and realise time has passed without you noticing it pass naturally.
Felt the post was written for someone like me without explicitly addressing me, and a look at goldenpinecollective produced the same fit, when content lands on its target without pandering you know the writer has done careful audience thinking rather than relying on demographic targeting or interest signals to do the work of editorial decisions.
Now setting up a small reminder to revisit the site on a slow day, and a stop at twilightpetalmarket confirmed the reminder was a good idea, planning return visits is a small organisational act that signals trust in ongoing quality and this site has earned that planned return through consistent performance across the pieces I have read so far.
Probably the kind of site that should be more widely read than it appears to be, and a look at trendydealhub reinforced that quiet wish, the gap between a sites quality and its apparent reach is sometimes large and that gap exists for this site in a way that makes me want to mention it more.
Reading this in a moment of low energy still kept my attention, and a stop at urbanpinebazaar continued that engagement under suboptimal conditions, content that survives the reader being tired is content with extra reserves of pull and this site has the kind of writing that holds up even when I am not at my reading best.
Without comparing too aggressively to other sources this one stands out for the right reasons, and a look at shadowglowcorner continued that distinctive quality, content that distinguishes itself through substance rather than style tricks is content with lasting differentiation and this site has clearly chosen substance based differentiation as its core editorial strategy.
Bookmark earned and folder updated to track this site separately, and a look at trendydealstation confirmed the folder upgrade was the right call, organising my reading list so that good sites do not get lost in a sea of casual bookmarks is something I do more carefully now and this site warranted its own spot.
Now adding the writer to a small mental list of voices I want to follow, and a look at silverpetalstore reinforced that follow intention, the few writers whose work I actively track are writers who have demonstrated sustained quality and this writer has clearly demonstrated that sustained quality across the pieces I have sampled here today.
Glad the writer did not feel the need to argue with imaginary critics in the post itself, and a stop at silverdunecollective kept the same focused approach going, defensive writing wastes the reader time and confidence on positions that did not need defending and this post has clearly avoided that common failure.
Thanks for a post that does not try to be funny when it is not the moment for it, and a stop at ironbloomcorner maintained the same appropriate seriousness, knowing when humour helps and when it just signals desperation for engagement is a sign of editorial maturity that many blogs have not developed yet.
Looking forward to seeing what gets published next month, and a look at neonbuycorner extended that anticipation across the broader site, finding myself looking forward to a sites future content rather than just consuming its existing content is a stronger commitment level than I usually reach with new finds and this site triggered that.
Picked this for my morning read because the topic seemed worth the time, and a look at vividtrendcenter confirmed the choice was right, my morning reading slot is precious and giving it to this site felt like a good investment rather than a waste which is a higher endorsement than I usually offer for content.
Liked everything about the experience, from the opening through to the closing notes, and a stop at urbanlighthousestore extended that into more pages, finding a site where the editorial vision shows through every choice rather than feeling random is an increasingly rare experience and one I am glad to have today during this particular reading session.
However measured this site clears the bar I set for sites I take seriously, and a stop at hypercartcorner continued clearing that bar, the metrics I use for site quality are admittedly informal but they are consistent and this site has cleared them on multiple measurements across multiple visits which is meaningful for my evaluation.
Now recognising that this site has earned a place in the small group of resources I treat as authoritative, and a stop at globalcartcorner confirmed that placement, the difference between resources I trust and resources I just consume is real and this site has clearly moved into the trusted category through consistent quality over time.
Reading this slowly and letting each paragraph land before moving on, and a stop at ambergrovecrafts earned the same patient approach, content that rewards slow reading rather than speed is content with real density and the writers here are clearly producing work that benefits from the careful eye rather than the rushed scan.
Thank you for not assuming the reader already knows everything, the explanations meet me where I am, and a look at fastgoodsarena did the same, that consideration is what makes a site feel welcoming rather than gatekeepy which is sadly the default mood across the modern web today for most subjects covered.
Even across multiple posts the writers voice has remained consistent in a way I appreciate, and a stop at futuretrendstation continued that voice, sites that maintain editorial consistency across many pieces have something most sites lack and this one has clearly worked out how to keep its voice steady across what reads as a growing archive.
Reading this between two meetings turned out to be the highlight of the morning, and a stop at royaltrendcorner continued that highlight quality, content that outshines the structured parts of a working day is doing something well beyond ordinary and this site has produced multiple such highlights for me already this week alone.