Tutorials and Projects

Dive into the world of microcontrollers and electronics.
Discover tutorials and projects on DevXplained and inspire yourself for your own.

Low Voltage AC Source (Part 1)
Normally we power our circuits with DC. For experimenting with rectifiers, however, we need an AC source. So, let's build one!
Alternating Current
Before we look at rectifier circuits, let's take a brief look at alternating current.
Reverse Polarity Protection
A reverse voltage can easily damage electronic circuits. Let's look at simple reverse polarity protection circuits using diodes.
A diode is like a one-way road for electric current. Let's have a look at this simple semiconductor components.
P-N Junction
Let's look at the foundation for transistors, diodes and many other semiconductor components: the p-n junction.
Light Dependent Resistors
Light dependent resistors are an easy solution for reacting to brightness changes. Let's discover their properties!
A world without semiconductor components has become unthinkable. But what are they and what makes them that special?
Temperature Measurement with NTCs
NTCs are often used as temperature sensors. To use them, we need to know how to calculate a temperature value out of the measured resistance.
The resistivity of materials is dependent on temperature. Thermistors are electric components which make use of this.
Resistance Measurement
We talked a lot about voltage dividers and resistance, but how can we actually measure resistance?
Potentiometers are a common example for voltage dividers. Let's have a look at how they work and how they can be used.
Voltage Dividers
As we are now familiar with resistor combinations, let's take a deeper look into voltage dividers.
Resistor Combinations
We already know how resistance, current and voltage behave for single resistors. But what about more complex resistor combinations?
Ohm's Law
When talking about resistance, we cannot avoid ohm’s law, which shows the connection between current, voltage and resistance.
Conductivity and Resistance
Among the components found in circuits, resistors are pretty common. Let's take a look at them and the conductivity of different materials.
Using a DMM
A multimeter is an indispensable tool when analyzing electronic circuits. Let's discover how to use it!
Electricity Fundamentals
Before we start the circuit basics series, let's first take a look at the fundamentals and the history of electricity.