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Intermediate Projects

The IoT and Touch-Based Home Automation

Presented here is a project based on ESP32 module to control home appliances using its touch-sensing inputs and Wi-Fi features. ESP32 module is great for...

RF-Based 12-Bit Signal Transmitter And Receiver

The circuit presented here converts 12-bit parallel digital data to serial data and then transmits it through RF transmitter module. Serial data is received...

Mobile Phone Detector Using LM358

This mobile phone detector can sense the presence of an activated mobile phone from a distance of four to five metres. So it can...

Precise Industrial Timer

Industrial timers are widely used in the industry for automatic controlling of electrical devices. Most timers available in the market are either complicated or...

Picture Slideshow Using ESP32

A small TFT display connected to Raspberry Pi can display many pictures one after another. This can also be done using ESP32, using the...

Home Automation System Using a Simple Android App

Nowadays, people have smartphones with them all the time. So it makes sense to use these to control home appliances. Presented here is a home...

Artificial Intelligence-Based Chatbot for Appliance Control

This project presents an artificial intelligence (AI)-based chatbot for controlling electrical home appliances using ESP8266-12E NodeMCU and Facebook Messenger platform. The platform for creating...

Microcontroller-Based LED Lights Pattern Generator

Here is a circuit meant for babies for generating various light patterns on eight LEDs. Lights pattern generator circuits available in the market are...

No-Load and Overload Protector for AC Motors

There are occasions when the water pump runs idle when there is no water in the sump/underground tank or the treadmill machine is left...

Revive Your Microwave: DIY Control Board Replacement for Any Model

Circuit and WorkingSoftwareDownload Source CodeConstruction and TestingDownload PCB and Component Layout PDFs: click hereOperational InstructionsAuto ModeManual ModeCaution Is your microwave oven rendered useless due to...

Arduino-Based MOSFET Terminal Identification System

Metal oxide semiconductor field effect transistor (MOSFET) is a semiconductor device widely used for switching applications and amplifying electronic signals. While the facility to...

Dual Sharing RTC

Necessity I have an old window AC at my lab, situated at the terrace. The AC needs to be run intermittently more so often when...

Tiny Wi-Fi Switch for $3

Out of curiosity, I ordered the tiny ESP8266 relay switch from aliexpress.com but never knew it could be so embarrassing to find the right...

Arduino-Based Coil Winding Temperature Recorder and Alarm Generator

Monitoring the temperature of a transformer or electric motor winding involves data acquisition. This project is developed to monitor the temperature of an electric...

Motion Detector Security Alarm Using Digispark Development Board

This circuit produces an alarm whenever someone comes near the spotting range of its passive infrared (PIR) motion sensor. It can be used as...

PWM-To-Analogue Signal Converter

This article presents a simple circuit to convert transistor-transistor logic (TTL) or pulse width modulation (PWM) signal to analogue signal using LM358 operational amplifier....

Simple and Low-Cost GPS Clock

Real-time clock (RTC) integrated circuits (ICs) are used for reasonably accurate time displays. The accuracy of RTCs mostly depends on the crystal. In a...

Fastest Finger First For Four Players

Fastest finger first technique is used in quiz shows (with rapid fire rounds) to find the order in which participants press the buzzer (to...
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