DIY electronics

Sometimes, when making your own devices on microcontrollers, there is a need to display huge amounts of information on a display and to use a bigger screen for ease of perception. Unfortunately, there are no ready-made and budget-friendly solutions for this task on the market.

To make a good AM radio, one transistor is enough. It can amplify both radio frequency and audio signal. It is called a reflex circuit, and it shows excellent results.

It was the very first all-transistor commercial radio in the United States and in the world. How much have circuits and enclosure designs changed in 69 years?

What is tube sound? How is it different from the transistor one?How do long radio tubes differ from short ones? Today we will build a small tube amplifier powered by 12 volts AC. And with its help, we will hear the answers to these questions and see them on the oscilloscope screen.

On the oscilloscope screen you can see signal distortions and use them to determine the health of the circuit. But where do you get the reference signal? - A signal generator will help!

How do electronic oscillators work? Who invented them, and when? And how can we apply them? We will talk about all this today.

Today we will assemble a small medium wave radio transmitter with which you can check and configure AM radio receivers, as well as listen to music through them if you connect an MP3 player or smartphone to it.

My first impression was that I had finally assembled the best overdrive in my entire life. For the first time, a cheap Squier Bullet Mustang electric guitar with stock humbuckers sounded equally good with all the cabinets I usually simulate and switch between when testing a new pedal.

Have you ever made a processor? I did. Took me just 12 microchips and a clock generator. The processor can execute several commands, and programs can be written for it. The program code and input data are entered using micro switches, and the state of the output register is displayed by four LEDs, according to the number of bits.

The fuzz effect's history began the same day the history of rock 'n' roll began. Today, we will study the circuit and history of the pedal, which is copied and improved by dozens, if not hundreds of companies and masters. And, of course, we will build and listen to our copy.