On/Off Remote Control For Two Appliances
This project will enable remote control of two electrical appliances. It makes use of a TV or DVD remote that uses modulated infrared (IR) pulse train operating at 38kHz frequency.
A good...
IoT Mesh Network Agriculture System
Watering various herbs, shrubs, crops and indoor decor plants at the right time with the right amount of water is essential for their productivity and growth, though care needs to be...
Crystal-Controlled Shortwave Transmitter
A shortwave transmitter can be built with IC CD4049, which is used as an oscillator and a buffer amplifier. The transmitter can be crystal controlled to work at a frequency of...
Arduino Album That Shows Photographs One By One Automatically
Normally, we keep the photographs we take in a photo album to view or show to our friends or family later. This Arduino album can display those digital photographs one by...
ESP8266 IoT Energy Monitor and Over Current Cut-off
Sockets, boards and wires generally receive a limited supply of electric current. Any 'current overdraw' from them via thin wiring can result in a short circuit. Therefore, real-time power usage monitoring...
Smart Glass That Can Read Books
We have seen many smart glasses to detect the distance between objects or help visually challenged persons to recognise people’s faces. Here we extend it to the next level using optical...
Control Any TV Using Alexa
One of the impressive characteristics of a smart home is that all electronic appliances can autonomously operate, making them smart. This means that television (TV) can also become smart and be...
Single-Channel Audio Amplifier
Here is a simple single-channel audio amplifier that can be made using IC LM380N. As per the datasheet, LM380N delivers an output of 2.5 watts with an 18V power supply and...
Milliamp Meter For 1mA To 100mA
Low-current measurements are generally not reliable due to resolution of the measurement devices, which are mainly meant for measuring a current of a few hundreds of milliamps to a few amps....
Smallest Alexa Controlled IoT Device
The popular voice-based AI digital assistant device known as Alexa is often used in smart offices and homes for applications ranging from lighting adjustments to controlling various consumer appliances. By simply...
