DIY SDR DSP Radio with Raspberry pi and RTLSDR dongle
https://maker.pro/raspberry-pi/projects/diy-sdr-dsp-radio-with-raspberry-pi-and-rtlsdr-dongle
The radio presented above is capable of receiving the entire spectrum, from 500 kHz to 2 Gigahertz
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.
Simple Inverters 12V to 220V , comparision, testing, and real characteristics
https://maker.pro/analog/projects/simple-inverters-12v-to-220v-comparision-testing-and-real-characteristics
Two of the simplest ways to make a 12V to 220V inverter, one with transistors and the other with Mosfets, and whether it is reasonable to make them.
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 STM32 Frequency meter from 1Hz to 30 MHz (Arduino IDE)
https://maker.pro/stm32-nucleo/projects/simple-stm32-frequency-meter-from-1hz-to-30-mhz-arduino-ide
This frequency meter uses an inexpensive STM32 microcontroller and this time, thanks to his better perfomances of the MCU, the frequency range is from 0 to 30 MHz, and therefore it is ideal for use in HF radio devices.
Simple Python Code to Auto Lock Your Computer!
https://maker.pro/custom/projects/simple-python-code-to-auto-lock-your-computer
I'll write a simple and easy code that you can run to lock your pc's screen.
Simple Sound Reactive LEDs Circuit
https://maker.pro/pcb/projects/electronic-piano-circuit-diy-electronic-toy-organ-555-timer-projects
In this tutorial, I show you step by step how to make a Simple Sound Reactive LEDs Circuit
Simple e-ink display for your projects (MH-ET LIVE 1.54) setup and demo
https://maker.pro/esp8266/projects/simple-e-ink-display-for-your-projects-mh-et-live-154-setup-and-demo
MH-ET LIVE 1.54 E-Paper - cheap e-ink display for your Arduino or ESP (setup and demo)
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