DIY super simple electronic component tester
https://maker.pro/arduino/projects/diy-super-simple-electronic-component-tester
The device is capable of testing: PNP, NPN transistors, N or P Channel MOSFET, Diodes, Double diodes, Resistors, Capacitors...
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
How to Make a Siren Generator
https://maker.pro/analog/projects/how-to-make-a-siren-generator
Learn how to make a simple electronic siren generator circuit with just a few parts!
Simple FM Radio Receiver With Arduino UNO and RDA5807M
https://maker.pro/arduino/projects/simple-fm-radio-receiver-with-arduino-uno-and-rda5807m
Learn how you can listen to your local radio stations with the RDA5807M, an Arduino UNO, an OLED screen, and a speaker!
Simple Arduino Bioresonance Therapy device - RIFE Machine
https://maker.pro/arduino/projects/simple-arduino-bioresonance-therapy-device-rife-machine
This is device for treating diseases with the help of different frequencies. A set of several frequencies is given for each disease
Simple Smoke Detector using ATtiny85
https://maker.pro/arduino/projects/simple-smoke-detector-using-attiny85
In this Tutorial We are Going To Make a Simple Smoke Detector using ATtiny85
Simple Arduino Hulda Clark ZAPPER with Timer function
https://maker.pro/arduino/projects/simple-arduino-hulda-clark-zapper-with-timer-function
The device presented in this video generates a signal identical to that of the original Zapper, but is made using a microcontroller, so in addition to being simpler to make, it also gives us the opportunity to add a small display and a timer so that we can continuously monitor the process of applying the therapy.
A Simple LED Thermometer With Arduino or Raspberry Pi
https://maker.pro/arduino/projects/a-simple-led-thermometer-with-arduino-or-raspberry-pi
Use a WS2812B-controlled LED strip to build a thermometer using either an Arduino or Raspberry Pi!
DIY Simple FFT Spectrum Analyzer on 16x16 LED Matrix
https://maker.pro/arduino/projects/diy-simple-fft-spectrum-analyzer-on-16x16-led-matrix-1
Visually beautiful spectrum analyzer that can also function as an Audio VU Meter and Waterfall Analyzer.