A branded automatic water dispenser is usually expensive. So, a relatively low-cost do-it-yourself solution is presented here. It is a portable general-purpose automatic water...
This article presents a low-noise power supply with four 78L15 voltage regulators in parallel, giving about 15V DC output. The modern environment has become...
The smart 230V AC bulb holder introduced here is an ultra-simple device with an automatic electric bulb controller switch and a standard electric bulb...
This project is based on an infrared (IR) sensor, which detects the presence of hands and consequently activates the motor pump to dispense alcohol-based...
This solar day lamp with battery backup can be used in offices, homes, shops, warehouses, temples, etc. It offers a cost-effective way of harnessing...
This portable solar-powered lantern with auto bedlight for everyday use can be made with easily available components.
The circuit diagram of the portable solar lantern...
A universal AC/DC booster, audio amplifier and line driver can be used in sensor circuits, audio signal generators, electrical guitars and so on. Most...
Electromyography (EMG) is a technique of recording muscular activities by measuring the potential difference across a muscle of interest. EMG signal acquisition is the...