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!
Found the writing surprisingly fresh for what is by now a well covered topic, and a stop at devbrook kept that freshness going across the related pages, original perspective on familiar ground is hard to come by and this site has clearly earned its place in the conversation rather than just rehashing old ideas.
Glad to have another reliable bookmark for this topic, and a look at synapsekit suggested several more pages I will be marking too, building a personal library of trustworthy resources is one of the actual rewards of careful browsing and this site is earning a place on my permanent shortlist for the topic.
Appreciate the practical examples, they made the abstract points easier to grasp, and a stop at jiveink added more of the same, this site clearly understands that real examples beat empty theory every single time which is the mark of a writer who knows their audience well and respects their time.
Reading this fit naturally into my afternoon walk because I was reading on my phone, and a stop at appprairie continued well in that walking format, content that survives mobile reading without becoming awkward is content with format flexibility and this site has clearly thought about how it reads across different devices today.
Decided to set aside time later to read more carefully, and a stop at cloudforgegoods 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.
Took my time with this rather than rushing because the writing rewards attention, and after blog33age I had even more to absorb, the kind of content that pays back the patient reader rather than punishing them with empty filler is something I look for and rarely find in regular searches lately.
Genuinely useful read, the points are practical and easy to apply right away, and a quick look at jerrybell confirmed that this site is consistent in that approach, looking forward to digging through the rest of it when I get the chance to sit down properly later in the week or this weekend.
Quietly enthusiastic about this site after the past few hours of reading, and a stop at softsapling extended that enthusiasm, the calibration of enthusiasm to evidence is something I try to maintain and this site has earned a calibrated quiet enthusiasm rather than the loud excitement that usually fades within a day or two of finding something.
Glad the writer did not feel compelled to cover every possible angle of the topic, focus is a virtue, and a stop at blog44through reflected the same disciplined scope, knowing what to leave out is half of what makes good writing good and this post has clearly been edited with that principle in mind.
Glad I gave this a chance instead of bouncing on the headline, and after blog66explain I was certain I had made the right call, snap judgements based on titles miss a lot of good content and this is a reminder to slow down and check things out before scrolling past in a hurry.
A piece that read as the work of someone who reads carefully themselves, and a look at jiveink continued that informed feel, writers who are also serious readers produce work with a different quality and this site reads as the product of someone steeped in good writing rather than just generating content for an audience.
Now thinking the topic is more interesting than I had given it credit for, and a stop at warewell continued that elevated interest, content that revives my curiosity about subjects I had set aside is doing genuine work in the structure of my interests and this site is providing that revivifying effect today actually.