close
close
close
Home Tags Electronics project

Tag: electronics project

This project is based on Arduino Uno and Processing software for monitoring temperature and sending voice alerts. Processing is an open source IDE that can be used to visualise data and implement other functionalities. Circuit and working The circuit is built...
This circuit presents a simple and low-cost DC-to-DC converter for phantom power supplies used in mixing consoles, microphone preamplifiers, telephone systems and similar equipment. There are many application circuits that require 24V and 48V phantom power supplies, but these...
Here is how we can build a 5W stereo audio power amplifier based on TEA 2025 IC and two potentiometers for left and right volume controls. Its power output is 2.5W on left and right channels each with a...
A tachometer measures the rotation speed of motors and other machinery. There are various types of tachometers. Described here is a digital non-contact type tachometer using a proximity sensor. Circuit and working The circuit diagram of the Arduino-based tachometer is shown...
This toy organ for children uses a readily-available force-sensitive resistor (FSR) and an NE555 timer IC. Resistance of the FSR varies with the amount of force or pressure being applied on its surface to play the toy organ. Circuit and...
Introduction GNSS – GG-1802 ($5 a piece) Sometimes things do not fall in place and we curse ourselves for taking the wrong turn or making the wrong choices. But in P B Shelly's word the real perspective later for those situations...
Here is a simple 10-watt audio amplifier using IC LM1875. The IC has five pins and can deliver a maximum of 18-watt output power depending upon the supply voltage and load. The author’s prototype is shown in Fig. 1. Circuit...
Many single-ended analogue signals do not have DC components or appropriate DC offsets. Due to that, these require very high input resistance for analogue-to-digital converter (ADC) inputs. This simple universal dual level shifter and buffer for AC and audio...
The Automatic Battery Charger circuit presented here can automatically charge a 12V, 7Ah battery, or above. Special features of the charger are as follows. It automatically controls the charging current as per the status of the battery. Battery voltage...
The accidental pressing of the on/off switch due to human error may cause the failure of the system it is connected to, or cause unnecessary delay to a part of the parent circuit. This could, in turn, cost money...