DIY sensitive Arduino IB Metal Detector with Discrimination
https://maker.pro/arduino/projects/diy-sensitive-arduino-ib-metal-detector-with-discrimination
It can detect metal coin at 15cm +, and bigger metal objects at 50cm and more. Also capable of discriminating between ferrous and nonferrous
Simple Sensitive 3 Transistors BFO Metal Detector
https://maker.pro/analog/projects/simple-sensitive-3-transistors-bfo-metal-detector
Despite its simplicity, it gives excellent results. If properly adjusted according to the instructions, it is able to detect a small coin at a distance of 15 cm, and a large metal object at a distance of 50 cm and more.
Simple Smartphone Metal Detector Experiments
https://maker.pro/android/projects/simple-smartphone-metal-detector-experiments
I will try to describe the principle of operation of a simple Metal detectors in which data is processed by a smartphone.
DIY Simple Sensitive IB Metal Detector with 2xNE555 IC
https://maker.pro/arduino/projects/diy-simple-sensitive-ib-metal-detector-with-2xne555-ic
A relatively sensitive IB (Induction balance) Metal Detector which is very easy to make, and contains a few standard electronic components
DIY Super Simple Sensitive Metal Detector
https://maker.pro/analog/projects/diy-super-simple-sensitive-metal-detector
Extremely simple Metal Detector whose making requires only one cheap integrated circuit TL084.
DIY Very simple Arduino Metal Detector
https://maker.pro/arduino/projects/diy-very-simple-arduino-metal-detector
Despite its simplicity, it has a relatively good sensitivity and perfect stability during operation
Homemade high-sensitivity metal detector
https://maker.pro/arduino/projects/homemade-high-sensitivity-metal-detector
Homemade high-sensitivity metal detector
Impulse III Metal Detector short Review
https://maker.pro/arduino/projects/impulse-iii-metal-detector-short-review
A miniature inexpensive module that by adding a battery and a coil you can turn it into a Metal Detector with excellent features.
Make your 3D printer quiet---silent stepper driver chip TMC2130TMC2208
https://maker.pro/4d-systems/projects/make-your-3d-printer-quiet-silent-stepper-driver-chip-tmc2130tmc2208
3D printing (3DP) is a type of rapid prototyping technology. It is a technology that uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer based on digital model files.