Basic Electronic Circuits

Raspberry Pi PWM Tutorial Raspberry Pi PWM Tutorial

Raspberry Pi is an ARM architecture processor-based board designed for electronic engineers and hobbyists. The PI is one of the most trusted project development platforms available today. With a higher processor speed and 1 GB of RAM, the PI can be used for many high-profile projects, such as image processing and the Internet of Things.

To do…

Transformerless Power Supply Transformerless Power Supply

Generating low-voltage DC from the 220V or 110V AC mains is very useful and necessary in the field of electronics. Low voltage DC, like 5v, 6v, 9v, 12v, is used in electronics circuits, LED bulbs, toys and many household electronics items. Generally, batteries are used to power them, but they need to be replaced from time to time, which is not cost-effective and also takes…

4x4 Matrix Keypad Interfacing with 8051 Microcontroller 4x4 Matrix Keypad Interfacing with 8051 Microcontroller

Keypad interfacing with 8051 microcontroller represents one of the fundamental skills for embedded systems developers. Matrix keypads are an input device found in calculators, security systems, ATMs, and various industrial control panels. Keypads are widely used input devices in various electronics and embedded projects. They are used to take inputs in the form of …

LED Interfacing with 8051 Microcontroller (AT89S52) LED Interfacing with 8051 Microcontroller

LED interfacing is the first thing one would try to do while getting started with any microcontroller. So here in this tutorial, we are going to interface an LED with an 8051 microcontroller, and we will write a C Program to blink the LED. We have used a very popular microcontroller, AT89S52, of the 8051 family, by ATMEL. LED interfacing with 8051 microcontroller…

Fire Alarm Circuit using Thermistor Fire Alarm Circuit using Thermistor

Fire alarms are a prime necessity in modern buildings and architecture, especially in banks, data centres, and gas stations. They detect fire in the ambience at a very early stage by sensing smoke or heat and raise an alarm, which warns people and gives them sufficient time to take preventive measures. It not only prevents big losses caused by deadly fire but sometimes…

Stepper Motor Driver using 555 Timer IC Stepper Motor Driver Circuit

Technically stepper motor driver circuit is a Decade Binary Counter circuit. The advantage of this circuit is, it can be used to drive stepper motors having 2-10 steps. Before going any further, let’s discuss more about the basics of a stepper motor.

Table of Contents What is a Stepper Motor Driver Circuit?  └ Key Benefits…
Simple Touch Switch using 555 Timer IC Simple Touch Switch Circuit using 555 Timer IC

This simple Touch Switch is developed by using 555 timer IC operated as a MONOSTABLE vibrator. Here the stable stage is LOW, so the timer outputs low after the trigger is removed. Basically in this circuit we will have a LED which turns ON when we touch a pin of timer. The LED will be ON for the time during which the trigger is present. Once the trigger is removed the…