|
arduino IDEArduino
|
|
|
Soldering Iron Kit |
DIY Sensitive STM32 Pulse Indiction Metal Detector (Arduino IDE)
This time I will show you how to make a sensitive Pulse Induction metal detector which is based on ARM STM32 microcontroller, which has significantly better features than Arduino and is also cheaper. It can detect metal coih at distance of 30cm, and big metal object at distance of more than 80 cm.
The positive thing is that you can install an Arduino bootloader on it, after that you can use it as a regular Arduino. This is my first project with this microcontroller and the experiences are very positive, and actually after flashing the bootloader there is no difference between STM and Arduino.
This time I will focus more on the project itself, and for how to install bootloader and sketch on STM32 you can find many tutorials and instructions, *** and I specifically used the tutorial from:
https://www.instructables.com/Using-a-STM32-Like-an-Arduino-Tutorial-STM32F103C8/
The project is taken from the cxem.net site, in that there is a small error in the given schematic, and instead of the B9 pin, B8 should be used. I have corrected that in the Schemаtic diagram given below. Also, the original project uses STM32F103C8, but the metal detector works quite regularly with STM32F103C6, which is a cheap clone version of the original.
So the device is relatively simple to make and consists of the following components:
- STM32F103C8T6 microcontroller
- TL072 Operational amplifier IC
- three Transistors BC847 or similar
- power mosfet IRF740
- 7805 Regulator
- Rotary encoder
- Buzzer
- WS2812 led strip with 8 leds
- resistors and capacitors
I made this device for testing purposes on a universal PCB, but If you want to make a custom PCB for this project, or for any other electronic project, PCBway (www.pcbway.com) is a great choice for you. PCBway is one of the most experienced PCB manufacturing company in China in field of PCB prototype and fabrication. They provide completed PCB assembly service with worldwide free shipping , and ISO9001 quality control system. Also, on their site there is an online gerber viewer where you can upload your gerber and drill files to render your board.
As a power source, I use three Li-Ion cells connected in series (about 12V) , and 7805 Regulator for powering Microcontroller.
The indication is made on a WS2812B module of eight LEDs and a buzzer. The control is carried out using the rotary encoder. When the power is turned on, the search coil must be moved away from metal objects, as the sensitivity is automatically adjusted.
Further, the sensitivity of the metal detector is adjusted manually by rotating the encoder knob. There is also a menu mode. The first press on the encoder knob enters the LED brightness adjustment mode. Second press, buzzer on/off mode. Second press, buzzer on/off mode. The fourth press, we enter the adjustment mode for large or small objects. The fifth press, exit the menu mode and auto-adjust the sensitivity.
The coil is wound with wire 0.7 mm, with a 20 cm diameter, and consist of 25 turns, but as you can see, during the testing I used a sensor consisting of two serially connected coils with a diameter of 12 and 23 cm, each containing 20 windings.
It is very important to mention that when the device is switched on, it is automatically calibrated, so there must not be any metal objects near the coil at that time. On the video you can see how the device works in real conditions in the air, and a brief description of the method of manufacturing the metal detector.
DIY Sensitive STM32 Pulse Indiction Metal Detector (Arduino IDE)
- Comments(0)
- Likes(3)
- breeze Nov 22,2023
- Meows21 Jun 26,2023
- Mr Eddie Bannister May 29,2023
- 0 USER VOTES
- YOUR VOTE 0.00 0.00
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
More by Mirko Pavleski
- How to turn mini Tesla Coil from Aliexpress into a Real Powerful SSTC with big spark Some time ago I bought a mini tesla coil kit from an online store that cost less than $4. It's a ve...
- DIY Arduino ultrasonic Sonar - Radar on TFT display Ultrasonic sonar is devices that use sound waves with frequencies higher than the upper audible lim...
- Simple ESP32 Internet radio on VFD Display Internet radio, also known as online radio or streaming radio, refers to the broadcasting of audio ...
- Short review of small music Tesla Coil with Bluetooth A Solid State Tesla Coil (SSTC) is a type of Tesla coil that uses solid-state electronic components...
- Testing 2500W Large Induction Heater An induction heater is a device that uses electromagnetic induction to heat objects. It consists of...
- Arduino FFT Audio Spectrum analyzer on 8x32 color matrix WS2812B The spectrum analyzer displays the amplitude of signals as a function of frequency, allowing engine...
- Unusual Led Ring Arduino Clock, Temperature, and Humidity meter There are many arduino clock projects with temperature and humidity readings where the results are ...
- How to make simple portable PEMF Magnetic Pulser PEMF (Pulsed Electromagnetic Field Therapy), which is also known as magnetic pulse therapy uses ele...
- Single Mosfet Mini SSTC Tesla coil with 10 + cm Spark A Solid State Tesla Coil (SSTC) is a type of Tesla coil that uses solid-state components such as tr...
- How to Make EM84 (6E2) Vacuum Tube Stereo VU Meter A VU meter, also known as a Volume Unit meter, is a device used to display the audio signal level ...
- Universal Arduino Staccato controller for SSTC and VTCC Tesla Coils The VTTC Staccato Controller was developed in the attempt to create longer sparks from VTTCs while ...
- DIY extremly Sensitive and cheap Arduino Seismometer A seismometer, is an instrument used to detect and record ground motion caused by seismic waves, su...
- DIY Extremly Sensitive and cheap Geophone sensor for Earthquakes detecting A geophone is a device used in geophysics to detect ground movement. It is specifically designed to...
- Arduino FFT Spectrum analyzer on VFD display GP1287 An audio spectrum analyzer is a device that visualizes the frequency content of an audio signal. It...
- DIY simple Spark Gap Tesla Coil Tesla coil is a type of resonant transformer circuit invented by Nikola Tesla around 1891. It is a ...
- DIY PC controlled high power PEMF Therapy Device PEMF or Pulsed Electromagnetic Field therapy is a type of therapy that uses electromagnetic fields ...
- DIY Precise Arduino Miliohmmeter In practice, we very often need to measure low resistances. Measuring low-value resistances, especi...
- The simplest way to determine the quality of lighting in your home - bulb flickering meter Light flickering can be a common issue and may occur with various types of bulbs, including incande...
-
IoT Indoor system with ESP32 to monitor Temperature, Humidity, Pressure, and Air Quality
336 0 2 -
Naruto Multi-color PCB printed with UV technology
134 2 1 -
-
-
-
-