This Touchless Dustbin Circuit using an Arduino Uno and Ultrasonic Sensor is a simple and useful mini project; people also call it a smart dustbin or an automatic dustbin because it opens and closes automatically without touch. In normal dustbin we have to touch lid by hand which is not hygienic, but in smart dustbin […]
Sensors and Detectors
Luggage Safety Alarm Circuit using IC LM358
Today security is big problem everywhere; many time thief try to open bag or suitcase in bus, train or station, therefore, we cannot always keep our eye on our luggage. So this small Luggage Safety Alarm Circuit using IC LM358 is a solution which help to protect our bag, as it uses piezo sensor and […]
Cricket Stumps and Bails LED Indicator Circuit
This Cricket Stumps and Bails LED Indicator Circuit uses flashing LEDs that glow when the ball hits the stumps. The circuit detects the disturbance and immediately lights the LEDs, creating an effect similar to modern cricket stumps used in professional matches. In addition, the circuit uses a light sensor and an LM3909 IC, while a […]
Digital Display AC Line Tester Circuit
The Digital Display AC Line Tester Circuit is a compact electronic device that detects the presence of mains AC voltage without direct contact, it operates wirelessly, making it a safe and convenient mains voltage tester. When the sensing probe comes near a live AC wire then the circuit detects the field and shows the count […]
Buzzer Alert at 0°C Indicator Circuit
In winter season, water and surrounding air can go below zero degree and at that time it is useful to have a small alarm which tells us when temperature goes near freezing point. This Buzzer Alert at 0°C Indicator Circuit uses thermistor sensor, one op-amp IC and a piezo buzzer to make sound alarm when […]
Automatic Light Control Switch Circuit using IC 555
To begin with, this article is for Automatic Light Control Switch Circuit using IC 555, it works with light dependent resistor (LDR). When light falls on the LDR, its resistance changes, the 555 IC converts this resistance change into a switching signal and drives the relay; the relay can then control a lamp, fan, motor, […]