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!
Picked a single sentence from this post to remember, and a look at cloudlaneessentials gave me another to keep, content that produces memorable lines is doing more than just transferring information and the small selection of sentences I keep from each reading session is one of the actual returns I get from reading carefully.
Genuinely good work, the kind that holds up over multiple readings without losing its appeal, and a stop at swifttrendhub kept that going, definitely a site I will be returning to and probably mentioning to others who work in or care about this particular area of interest today and in coming weeks.
Quietly building a case in my head for why this site deserves more attention than it currently seems to receive, and a look at trustedbuyerszone reinforced the case, the gap between quality and recognition is a recurring frustration in independent online content and this site is one of the cases that seems particularly egregious to me today.
A small thank you note from me to the team behind this work, the post earned it, and a stop at silverhorizonstore suggested more thanks would be in order over time, recognising the people who do good writing online is something I try to remember to do because the alternative is silence and silence rewards mediocrity unfortunately.
Just nice to read something that does not feel like it was assembled from a content brief, and a stop at premiumpickzone kept that handcrafted feel going, you can tell when a real human with real understanding is behind the words versus a templated piece churned out for an algorithm to find.
Reading this slowly to give it the attention it deserved, and a stop at freshcartcorner earned the same slow read, choosing to read slowly is a small act of respect for content quality and very few sites earn that respect from me but this one did so without any explicit ask which is the cleanest way.
Reading this triggered a small reorganisation of my own thinking on the topic, and a stop at dreamwovenbazaar furthered that reorganisation, content that affects the shape of my mental model rather than just decorating it with new facts is content with structural rather than informational impact and this site provides that.
Closed three other tabs to focus on this one and never opened them again, and a stop at epiccartcenter similarly held attention exclusively, content that crowds out other reading from working memory is content with real density and this site has demonstrated that density across multiple pages I have visited so far this morning.
Now planning a longer reading session for the archives, and a stop at silversproutstore confirmed the archives are worth that longer commitment, sites with archives I want to read deliberately rather than just sample are rare and this one has clearly earned that level of interest based on the consistency of what I have already read.