Content for Circuits

Real Time Clock

Being near the end of the year, we decided to build a circuit to control a Real Time Clock (RTC). An RTC is characterized by being an autonomous time source that works independently from the rest of the circuit. To …

Christmas tree with LEDs Circuit

Being in the Christmas season we will be building a circuit that fits the Christmas spirit - a Christmas tree with LEDs. This circuit is very simple and allows you to make the LEDs blink alternately in three groups. The circuit …

Servo Tester

In this article we will build a circuit to control the position of a servo. Servos are typically small in size and are typically used to operate remotely controlled robots, cars or airplanes via radio. They are also used in …

Clap Switch

Today we will build a circuit activated by clapping sounds. This allows you to open or close a circuit by clapping your hands. This circuit is made using a sound sensor, which detects the loud sound (of clapping) as input …

Unipolar Motor Controller

Two circuits will be built today to control Unipolar motors. A unipolar motor is a type of step motor described as needing only a current source. By contrast, bipolar motors require two current sources to move. The complexity of this …

DC Motor Controller

Today we will build a circuit to control DC motors. Electric motors of all kinds work thanks to electromagnetism. They convert electric energy into mechanical energy. DC motors are relatively simple control motors. They are motors that have two modes …

Timer with 555

Today we will build a circuit that is a timer. The IC 555 was used. This was set to Mono-stable mode. When the button is pressed the time starts and the LED lights up. After a while it goes off …

Obstacle detector using Infrared

Today we will build a circuit that detects the interruption of an infrared beam allowing an alarm to be created. The LM358 IC has two comparators. Pin 3 which is the non-inverted end of the voltage comparator is connected to …

Infrared LED Alarm

Today we will build a circuit that detects the interruption of an infrared beam allowing an alarm to be created. The LM358 IC has two comparators. Pin 3 which is the non-inverted end of the voltage comparator is connected to …

Shutdown button for Raspberry PI

Today we will build a small circuit that lets you execute commands in Raspberry Pi to do whatever we want when a button is pressed (in our case to start the shutdown process). This circuit is quite simple and requires …