DIY electronics

What do you do when the controller doesn't have many pins to connect buttons, indicators, relays, etc.?

When it comes to clean guitar tone, we all think of Fender amps. And the overdriven sound is, of course, Marshall. Can a small transistor pedal replace a real tube amp? - Let's try and listen!

In this second part, we'll examine how to transform a successfully prototyped idea into a physical product. Several key aspects need to be reconsidered.

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.