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ESP32 Internet Radio, MP3 Player , and Alarm Clock

This time I will show you how to make a stand-alone Internet Radio, which in terms of characteristics, stability, and functions is comparable and even better than commercial devices of this type, and yet the price for making it is many times lower.

March 04, 2023 by Mirko Pavleski

Simplest way to make Induction Heater, Power Supply, and HV Source from CFL Bulb Ballast

An interesting project that describes how to make several useful devices using a CFL bulb ballast, with minimal modification.

February 04, 2023 by Mirko Pavleski

Linear Scale ТЕА5767 FM Radio on ili9341 TFT Display

Simple FM Radio with a beautiful retro look linear scale.

January 14, 2023 by Mirko Pavleski

DIY Simple PCL82 Low Voltage (12V) Tube Amplifier

How to make a very simple single tube amplifier that also works at low voltage and is powered by 12V DC. Also, instead of an output audio transformer, a standard 220V/6V mains transformer is used.

December 24, 2022 by Mirko Pavleski

Trio JR-500S Ham Radio Receiver: a Review

My "new" Trio JR-500S Receiver, and some general comparison with a modern SDR receiver.

December 10, 2022 by Mirko Pavleski

Universal VFO 10 KHz-160 MHz with Retro Analog Scale

A variable frequency oscillator (VFO) is a necessary component in any tunable radio transmitter or receiver.

November 19, 2022 by Mirko Pavleski

IR Remote Tester and Decoder

In this tutorial, I am going to show you guys how to create a simple InfraRed(IR) Receiver Circuit using TSOP4838 and will also show you how to read the code send by the remote controls. You can also use this circuit as an IR remote tester.

November 07, 2022 by Ashish Adhikari

Arduino hearing test device - Audiometer

An audiometer is a machine used for evaluating hearing acuity.

October 22, 2022 by Mirko Pavleski

LoRa-based tree poaching detector using Arduino

Tree poaching detector using Arduino UNO, LoRa Module with PIR sensor, Vibration sensor, and Sound sensor

July 31, 2022 by Ajanth Badiger

All Band Radio with New Firmware

How to make a relatively simple All band DSP Radio Receiver with color touch display which is based on the Si47xx series chip

July 30, 2022 by Mirko Pavleski

NRF24L01 Tutorial - Arduino Wireless Communication

In this tutorial, I am going to show you guys how to use this transceiver module to add wireless communication between t

June 21, 2022 by Ashish Adhikari

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.

June 18, 2022 by Mirko Pavleski

DIY Super Simple Sensitive Metal Detector

Extremely simple Metal Detector whose making requires only one cheap integrated circuit TL084.

April 30, 2022 by Mirko Pavleski

DIY ULTRA-SENSITIVE EMF (Electromagnetic field) Detector

This device can also be called an EMF meter, as it can measure the relative strength of a field using a scale of 10 LEDs.

April 16, 2022 by Mirko Pavleski

Arduino flicker meter-Determining the quality of light bulbs

Numerous studies have shown that flickering, Although high frequency and then totally invisible, It can also cause headaches, eyestrain...

March 12, 2022 by Mirko Pavleski

January 17, 2022 by Illya Kuzmych

Audio Mixer

Audio mixer built on breadboard using through hole components, measured using Electrical Engineering lab equipment

December 28, 2021 by Nick Khormaei

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Latest Amateur Radio Projects

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ESP32 Internet Radio, MP3 Player , and Alarm Clock

Simplest way to make Induction Heater, Power Supply, and HV Source from CFL Bulb Ballast

Linear Scale ТЕА5767 FM Radio on ili9341 TFT Display

DIY Simple PCL82 Low Voltage (12V) Tube Amplifier

Trio JR-500S Ham Radio Receiver: a Review

Universal VFO 10 KHz-160 MHz with Retro Analog Scale

IR Remote Tester and Decoder

Arduino hearing test device - Audiometer

LoRa-based tree poaching detector using Arduino

All Band Radio with New Firmware

NRF24L01 Tutorial - Arduino Wireless Communication

Simple Smartphone Metal Detector Experiments

DIY Super Simple Sensitive Metal Detector

DIY ULTRA-SENSITIVE EMF (Electromagnetic field) Detector

Arduino flicker meter-Determining the quality of light bulbs

ESP32 UWB Antenna Delay Calibrating

How to Create a Low Power DC/DC Converter

Analog Audio Mixer

Audio Mixer