Metal detectors are incredible tools used to find metal objects. They work by using electricity and special sensors. We see them in many places. In security, they keep us safe by finding hidden weapons at places like airports. In archaeology, they help discover old things like ancient coins and statues.
For fun, people use metal detectors to find treasures in the ground. It’s like a real-life treasure hunt. In factories, special metal detectors help make sure products don’t have bits of metal in them. That keeps us safe when we use things like food or toys.
1. Sensitive Metal Detector
The Sensitive Metal Detector, a modified version of the Russian PIRAT pulse induction model, excels in detecting metal objects. It boasts a remarkable 15-centimeter range for pinpointing even small coins, capable of identifying larger objects from much greater distances.
Surprisingly, its construction is straightforward, requiring only a handful of components. This detector offers precise results, making it an ideal choice for those seeking accuracy without the complexity typically associated with such devices.
2. Outdoor Metal Detector
This metal detector may produce either accurate or approximate readings, depending on how it was designed, and it is operated via an app downloaded to a user’s Smartphone. In addition to the phone, just two other items must be present for it to function properly.
Two resistors and an LC circuit make up the parts. However, the scheme’s sensitivity suffers a bit from its ease of usage. The detector is not sensitive enough to unearth anything beyond a coin.
However, if you follow this guide, you won’t need to solder anything to create your detector. It is the best alternative for those who need more time to learn how to solder. This idea is a must-try for any techie since it includes photographs for each step and detailed instructions.
3. Arduino Metal Detector
This detector was created using a toy weed-whacker with a dial for adjusting the sensitivity.
It can detect increasingly minute objects when the sensitivity is adjusted from low to high. At its weakest setting, it can pick up signals from objects as big as soda cans and mobile phones. On the other hand, at its maximum level, it is sensitive enough to find screws and coins.
Boosting the magnetic field produced by the inductor also increases the detection range of this device. You may use this do-it-yourself metal detector to find tiny objects around the house that might go unnoticed.
4. Upcycled Metal Detector
If your available financial resources are relatively restricted, this technique is the best option for you to pursue. This AM radio, tape, and pocket calculator detector is great for lighthearted metal-detecting around the house.
You may see your calculator kick into gear if you bring it near to a spoon while using your detector. The spoon is a receiver for a radio frequency signal generated by the calculator’s electrical circuit; what we hear on the radio results from these reflected radio waves.
You can build your own metal detector in little more than five easy steps and with only three inexpensive components.
5. Simple Cardboard Metal Detector
This metal detector is made out of cardboard and electrical components and does a good job for a low price. In addition, the layout is basic, and instructions for assembling each component are supplied in great detail.
On the other hand, developing the coil for the detector is more complex and requires some mathematical analysis. The uplifting news is that one does not necessarily need to use a coil in every situation. You can buy one online if you do not have a limited financial budget. Using cardboard, you can even fashion a grip for your detector.
The detector’s handle is a beautiful addition and serves a practical purpose by keeping the batteries and controls close to reach. It’s a fantastic blueprint to follow if you’re looking to construct a novelty. Although it is not ideal for use outdoors, it is functional and entertaining when used inside.
6. Environmentally Safe Metal Detector
Finding a specific area to dig in is the primary challenge when utilizing a metal detector. However, it is no longer an issue thanks to this metal detector. It can locate targets with precision accuracy because of its four search coils and color touch screen.
This detector also improves your search system by making it more efficient and reducing wasted time.
The wooden skewers fastened to each coil also make digging much easier. These skewers are driven into the ground at the spot you’ve indicated. Since less digging is required, less damage is done to the natural world.
Finally, this detector has a pinpointing depth of 7-10 cm, making it perfect for finding lost jeweler and money in public spaces like parks and beaches.
7. Vlf Metal Detector
Inspired by the Smart Hunter, this very low frequency (VLF) metal detector employs transmitter and receiver coils in a double-D geometry. In addition, the detector’s exceptional sensitivity allows it to locate a coin at a depth of 25 centimeters. In certain cases, it is possible to detect bigger objects up to 1 m away.
This detector is operated by a smartphone app designed specifically for metal detection. The incorporation of an audio amplifier and speaker enhances the gadget.
8. High Sensitivity Metal Detector
The High Sensitivity Metal Detector is a remarkable device renowned for its exceptional detection capabilities. It can effectively locate concealed coins buried at depths 15 to 20 centimeters below the surface.
The key to its success lies in the meticulously detailed schematic of the system, particularly the sensor. It underscores the critical importance of a precisely engineered sensor in ensuring the detector’s optimal performance.
It’s worth noting that operating this detector demands a higher level of expertise compared to standard models due to its increased complexity. However, this complexity brings added benefits, such as the ability to differentiate between various types of metals once the user becomes familiar with its operation.
9. Pulse induction Metal Detector
A single coil is the receiver and the transmitter in a pulse induction system. You can tell the difference between ferrous and non-ferrous metals with the help of this DIY metal detector’s pulse induction mechanism.
In addition to having a high level of sensitivity, this device is a cross between an Arduino and an Android. A downloadable app for mobile devices, available at no cost, serves as the mechanism for carrying out the system.
This tool’s coil is constructed from 0.4 mm-diameter isolated copper wire. It is a 19-centimeter diameter sphere with 25 windings within. Do not store any metal items close to the coil.
This gadget’s ingenious operation belies its seemingly simple construction. It has a detection range of 10-15 cm for smaller metal coins and 30-40 cm for bigger ones.
10. Arduino Metal Detector
This design demonstrates that a metal detector need not be uninteresting in appearance. This do-it-yourself metal detector is excellent since it has five individual coils, each lighting up when metal is detected.
This detector is a popular option among do-it-yourselfer because of its sleek design and eye-catching blue and yellow color scheme. The idea was just an excuse to switch out the sound indicators for lights and have some fun. The device’s circuit board also stands out from the norm.
In contrast to the standard square design of most circuit boards, this device’s board is irregular in shape. The circuit board is also hexagonal to complement the exterior cover’s design and prevent any potential interference with search coils.
At long last, a gadget that can withstand water. Dew-covered grass may be used outside thanks to the gadget, which can be protected from water damage by painting the plastic cover on both the top and bottom.