Robot/metal detector circuit diagram. Source: Interesting Engineering Build the PCB as shown, with the components required. Then insert the Arduino RF Nano, and the DC Motor Driver onto the board.

If you think of a metal detector, you’re probably thinking of a fairly simple device with a big coil and a piercing whine coming from a tinny speaker. [mircemk] has built a more modern adaptation.

[zaphod] had to research how a metal detector actually works. After reviewing the pros and cons of various approaches, the decision was made to go with a beat frequency oscillator (BFO) circuit.

The Metal Detector seems more optional but is actually even better. The Metal Detector is a permanently unlocked tool that gives you the ability to dig up buried treasures, and those chests often ...

NUREMBERG, Germany--(BUSINESS WIRE)--Arduino returns to Embedded World (11-13 March 2025) with the full power of its open-source ecosystem and a collaborative vision that welcomes partnerships ...

Once you get your Pharoh’s Detector, you will be able to get Cursed Treasures. However, don’t get your hopes up on finding them easily. Pharoh’s Detector only has a 5% chance of finding a ...

The present IP is a VCC Detector (VDT) circuit, which prevents the possibilities of causing Flash writing failure or internal operation failure by unstable supply voltage. It detects the voltage level ...

and of course, regularly replacing the batteries in the smoke detectors throughout my home. That's easier said that done. We've all been there — at 2 a.m. (it's somehow always the middle of the ...

Here is your 2025 hard rock + metal album release calendar and all of this week's newest albums! Each week is loaded with new rock and metal releases and keeping track of it all can be pretty ...

When detectives were hunting for a metal-detectorist-turned-convict, they got a lead from a surprising source. A Facebook appeal to find the wanted man was getting a flurry of attention - because ...

In a frenzy of sensationalist reporting, the press dubbed Larson’s polygraph a “lie detector,” and the Examiner swooned: “All liars, regardless of cleverness, are doomed.” Larson ...