alarm
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Smart WLED Clock with RTC, PIR, Audio feedback and Environmental Monitoring The integration of addressable LEDs with the WLED firmware has revolutionized DIY lighting projects, allowing for complex visual effects with minimal to no coding. However, most standard WLED-based clocks face significant limitations, such as time-drift during internet outages and continuous power consumption regardless of room occupancy and no alarms. To address these issues, this… |
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Build a Speaking Alarm Clock Using the XIAO ESP32-S3 Traditional alarm clocks have remained fundamentally unchanged for decades. The ESP32 speaking alarm clock built in this tutorial replaces the beep at a scheduled time and expects the user to interpret the reason for the beep. While functional, this approach lacks intelligence and context. Modern embedded systems enable the creation of smarter devices that… |
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How to build a Wearable Air Quality Monitor Pendant using STM32 & SGP40 Sensor Indoor and outdoor air pollution significantly impacts human health, causing respiratory issues and reducing life expectancy. Personal air quality monitoring has become essential for protecting ourselves from harmful airborne contaminants like volatile organic compounds (VOCs), particulate matter, and toxic gases. This DIY wearable air quality monitor pendant… |
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Gas Leakage Detector Using Arduino: Complete DIY Guide Gas leaks can pose serious safety risks, especially in homes, kitchens, and small commercial spaces. In this project, you'll learn how to build a simple and budget-friendly gas leakage detector using Arduino. This LPG gas leak detector uses an Arduino Uno and MQ-5 gas sensor to detect gas levels in the air and activates a buzzer and LED to alert users when a leak is… |
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How to build a Smoke and Fire Alarm System using Arduino with SMS Notification What if you could get an instant SMS alert the moment a fire or smoke is detected at home or office? Through this project tutorial, you can build a fire and smoke alarm system using Arduino UNO R4 that sends real-time SMS notifications. This means you will immediately get alerted even if you are far away. In this Arduino Project, you… |
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Understanding Difference between Active and Passive Buzzer and How to use it with Arduino There are many ways to communicate between a product and a user, but the most common and popular choices for audio communication is the buzzer. The buzzer plays a very important role in electrical and electronic devices. We often encounter buzzers in common devices such as alarm clocks, doorbells, or other household appliances.… |
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How does an HC-SR501 PIR Sensor Work & How to Interface it with ESP32? If you are thinking about building yourself a burglar alarm or you are thinking about Automating lights in your room, then you should definitely consider using an HC-SR501 Passive Infrared Sensor or PIR sensor for your project, because as the name suggests a PIR sensor allows you to detect when a person or animal moves in or out from the range of your sensor. And you… |
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Interfacing E18-D80NK IR Obstacle Avoidance Proximity Sensor with Arduino An infrared sensor is an electronic module that is used to detect the certain physical appearance of its surroundings by either emitting and/or detecting infrared radiation. IR sensors can also sense motion and determine the amount of heat released by an object. These sensors are commonly used in intruder alarms, light switches, and other home automation and industrial… |
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Building a Wailing Siren Circuit using a 555 Timer IC If you are an electronics hobbyist then you must have heard about the 555 timer IC and its 3 popular circuits viz. astable multivibrator, bistable multivibrator, and monostable multivibrator. Apart from these, there are other popular circuits like 555 timer IC as a switch and police hooter that we have talked about previously. Adding to the list,… |
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All About Transformer Protection and Transformer Protection Circuits Transformer protection is crucial as transformers are one of the most critical and expensive components of any distribution system. It is an enclosed static device usually drenched in oil, and hence, faults occurring in it are limited. But the effect of a rare fault can be hazardous for the transformer, and the long lead time for repair and replacement of transformers makes… |
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Rain Detection System using Arduino and Rain Sensor A simple Rain Detection System can be easily built by interfacing an Arduino with Rain Sensor. The sensor will detect any rainfall falling on it and the Arduino board will sense it and can perform required actions. A system like this can be used in many different fields, such as agriculture and automobile fields. Rainfall detection can be used to automatically regulate… |
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Automatic Light Fence Circuit with Alarm Light fence circuit is used to detect the presence of any human or object in a particular area. The detecting range of Light Fence Circuit is about 1.5 to 3 meters. It’s quite simple to design the circuit using LDR and Op-amp. This portable circuit can work smoothly with a commonly available 9V battery and the alarm sound generated from the buzzer is loud enough to detect… |
