diy ultrasonic transducer

The device emits ultrasonic sound waves that sweep between 65,000 and 25,000 hertz. It is designed using a 556 dual timer, where one half functions as an astable multivibrator with an adjustable frequency ranging from 1 to 3 Hz....

All necessary materials have been gathered to work on an Arduino-powered diversity controller. The design aims to support two inputs, although the hardware can accommodate up to four inputs, and features four amplified outputs. The diversity function will utilize...

A circuit has been designed to detect the duration of an ultrasonic pulse as it travels a certain distance. The input signal is sourced from a 40 kHz ultrasonic receiver. The first stage consists of a 40 kHz band-pass...

This is the design circuit diagram of an ultrasonic mosquito repeller. The circuit operates based on the theory that insects, such as mosquitoes, can be repelled by sound frequencies in the ultrasonic range (above 20 kHz). The circuit utilizes...

A DIY intervalometer for the Sony NEX 5N camera designed for time-lapse photography. This intervalometer is compatible with most Sony cameras, including the NEX and Alpha series. The circuit utilizes an infrared LED and a Serial LCD with four...

This simple circuit consists of a transformer, two diodes, a capacitor, and an ammeter. To charge a battery, connect the positive and negative terminals of the circuit to the corresponding terminals of the battery. When the battery is not...