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!
Bookmark added with a small note about why, and a look at stylishcartarena prompted another bookmark with another note, the bookmarks I annotate are the ones I expect to return to deliberately rather than stumble into and this site is generating annotated bookmarks at a higher rate than my usual content sources by some margin.
Worth flagging that the writing rewarded a second read more than I expected, and a look at silkduneemporium produced the same second read benefit, content with hidden depths that emerge only on careful rereading is rare in the modern blog space and this site has clearly invested in that level of compositional density throughout.
Now noticing the post fit a particular gap in my reading without my having articulated the gap before, and a look at frostedenclavegoods extended that gap filling effect, content that meets needs I had not consciously formulated is content with reader insight and this site has clearly developed that anticipatory editorial sense across many pieces.
Reading this on a phone at a coffee shop and finding it perfectly suited to that context, and a stop at epictrendcorner continued the comfortable mobile experience, content that works across reading conditions without compromising on substance is increasingly important and this site has clearly thought about the whole reader experience here.
Worth a quiet moment of recognition for the consistency I have noticed across multiple posts, and a stop at frostdunemarket continued that consistent quality, sites that maintain quality across many pieces rather than peaking on one viral post are sites with real editorial discipline and this one has clearly developed that discipline carefully.
Worth recognising that this site does not chase the daily news cycle, and a stop at quickshoppingcorner confirmed the longer publication arc, sites that resist the pressure to comment on every passing event are sites with genuine editorial discipline and this one has clearly chosen depth over volume which I respect deeply.
Started believing the writer knew the topic deeply by about the second paragraph, and a look at brightcartfusion reinforced that confidence, the speed at which a writer establishes credibility through their writing is a useful quality signal and this writer establishes it quickly and quietly without resorting to credential dropping or self promotion.
Reading this gave me a small framework I expect to use going forward, and a stop at urbancrestemporium extended that framework, content that produces transferable mental models rather than just specific facts is content with multiplicative value and this site is providing those models at a rate that justifies extra attention from me regularly.
Thanks for keeping things clear and to the point, that is honestly hard to find online these days, and after reading through goldenshorestore the message stayed consistent which makes me trust the information being shared more than I usually do on similar pages that cover this same kind of topic.
However casually I came to this site I have ended up reading carefully, and a look at neonbuycenter continued earning that careful reading, the conversion from casual visitor to careful reader is something content earns rather than demands and this site has accomplished that conversion for me over the course of just a few pieces.
Skipped the related products section because there was none, and a stop at mysticthreadstore also lacked any aggressive monetisation, content that is not constantly trying to convert me into a customer or subscriber is content that has confidence in its own value and that confidence shows up as a different reading experience.
Reading this in a relaxed evening setting was a small pleasure, and a stop at radiantfieldcollective extended the pleasant evening reading, content that fits the tone of relaxed time without becoming forgettable is what I look for in evening reading and this site has the right tone for that particular slot in my daily reading routine.
Came away with some new perspectives I had not considered before, and after urbanharborcollective those ideas felt more complete, the kind of content that stays with you a little while after reading rather than slipping out the moment you switch tabs and move on with your day to whatever comes next.
Pleasant surprise, the post delivered more than the headline promised, and a stop at blossomhollowstore continued that pattern of under promising and over delivering, the rarest combination on the modern web where most content does the opposite by promising the world and delivering thin recycled summaries instead each time you click on something interesting.
Now placing this in the small category of sites whose updates I would actually want to know about, and a stop at smarttrendarena confirmed that placement, the difference between sites I want to follow and sites I just consume from is real and this one has crossed into the active follow category from the casual consumption side.
Reading this back to back with a similar piece elsewhere made the quality difference obvious, and a stop at frostharvestgoods only widened the gap, comparing content side by side is a useful exercise and the gap between this site and average competitors in the space is large enough to be noticeable from the first paragraph.
A piece that earned its conclusions through the body rather than asserting them at the end, and a look at goldenharvestlane maintained the same earned quality, conclusions that follow from what came before are more persuasive than declarations and this site has clearly internalised that principle in how it constructs arguments throughout pieces.
Reading this slowly because the writing rewards a slower pace, and a stop at nextgentrendzone did the same, the pace at which I read content is something I now use as a quality signal and writing that earns a slower pace earns my attention as a reader looking for substance these days.
Worth recommending broadly to anyone who reads on the topic, and a look at moderntrendcenter only confirms that, the rare combination of accessibility and depth in this site makes it suitable for both newcomers and people who already know the area which is hard to pull off in any blog format today and rarely managed.
Loved the writing voice here, friendly without being fake and confident without being arrogant, and a stop at swiftmaplecorner carried the same tone forward, the kind of personality that makes a reader feel welcome rather than lectured at which is a balance plenty of writers struggle to find no matter how long they have been at it.
Bookmarking this for later, the kind of resource I want to keep nearby, and a quick look at lunarfieldtraders confirmed the rest of the site is worth the same treatment, definitely going into my reference folder for the next time the topic comes up at work or in conversation with someone who asks.
Closed my email tab so I could read this without interruption, and a stop at nextgenstorefront earned the same protected attention, when content is good enough to defend against the usual digital distractions you know it deserves better than the half attention most online reading gets in a typical busy day.
Worth bookmarking and sharing with anyone interested in the topic, that is my honest take, and a stop at eliteflashcorner reinforces that, the kind of generous resource that makes the open web feel worth defending against the constant pressure to retreat into walled gardens and curated feeds today everywhere I look across all my devices.
Really appreciate that the writer did not overstate the importance of the topic to make the post feel weightier, and a quick visit to brightforgecraft maintained the same modest framing, content that is honest about its own scope rather than inflating itself is the kind I trust and return to repeatedly over time.
Bookmark added in three places to make sure I do not lose the link, and a look at blueharborcrafts got the same redundant treatment, sites I am afraid to lose are the rare keepers and this is clearly one of them based on what I have read so far across this and a couple of related posts.
Reading this gave me the rare experience of fully agreeing with all the conclusions, and a stop at crystalbloommarket continued that agreement pattern, content that aligns with my existing views without seeming designed to do so is just content that happens to be reasonable and this site reads as reasonable rather than ideological mostly.
Honest take is that I will probably forget most of what I read online today but this post is one I will remember, and a stop at goldenmeadowstore kept that same memorable quality going, certain writing leaves a residue in the mind in a way most content simply does not manage.
Now feeling that this site is the kind I want to make sure does not disappear, and a look at freshcarthub reinforced that quiet protective feeling, the rare sites whose disappearance would actually matter to me are the sites I want to support through return visits and recommendations and this one has joined that small protected list.
One of the more thoughtful posts I have read recently on this topic, and a stop at stylishbuycorner added even more weight to that impression, this is genuinely good content that holds its own against far better known sites in the same space without trying to imitate any of them at all which I appreciate.
Now appreciating that the post did not require external context to follow, and a look at trendyvaluehub maintained the same self contained quality, content that respects new visitors by being readable without prerequisites is content with broader accessibility and this site has clearly invested in keeping each piece reader friendly for fresh arrivals.
Refreshing tone compared to the dry corporate posts on similar topics, and a stop at velvetfieldstore carried that personality through nicely, you can tell when a real person is behind the writing versus a content team chasing metrics and this site definitely falls into the former category clearly across what I have seen.
Now noticing that the post avoided the temptation to be funny in places where humour would have undermined the substance, and a stop at velvetpetalstore maintained the same restraint, knowing when to be serious is a rare editorial virtue and this site has clearly developed it through what I assume is careful editorial practice over years.
After reading several posts back to back the consistent voice across them is impressive, and a stop at goldencreststore continued that voice consistency, sites that maintain a single coherent voice across many pieces by potentially many writers represent serious editorial discipline and this one has clearly developed the institutional consistency needed for that.
Felt the post had been written without looking over its shoulder, and a look at digitalcartarena continued that confident posture, content written for its own sake rather than against imagined critics has a different quality and this site reads as written from a place of confidence rather than defensive justification of every claim.
Reading this post made me realise I had been settling for lower quality elsewhere, and a look at frostbaycollective extended that recalibration, content that exposes how much I had been accepting in adjacent sources is content with calibrating effect on my standards and this site is performing that calibration function across topics for me reliably.