Creating a Smart Water Sensor with the ESP32 Thing

Over the Christmas break, my parents were out of town to celebrate the holidays. When they came back, they saw something every homeowner fears – a flooded basement. In a basement, there are pipes that collect water from around the foundation and bring it into the sump pit, which pumps it out away from the house. When the sump pump fails, water has no way to leave the basement and it floods. I recently bough ...

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Arduino-based Front Office Visitor Alarm

This Arduino based visitor alarm is useful for offices, clinics and shops. It alerts you to the entry of a visitor by producing a beep sound every time the door is opened. The alarm automatically switches off after a few seconds. Circuit and working Circuit diagram of the Arduino based visitor alarm is shown below. It is built around an Arduino Uno board (Board1), a reed switch (S1) and a piezo buzzer (PZ1) ...

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Christmas Presents Intruder Detector

See when your kids move their presents! Detector sets off an audio alarm and sends an alert directly to your phone! Things used in this project Hardware components Arduino MKR1000 × 1 Solderless Breadboard Half Size × 1 Jumper wires (generic) × 1 Adafruit Piezo × 1 Adafruit Lipo Battery 1200mAh × 1 Software apps and online services Arduino Web Editor Ubidots Hand tools and fabrication machines Soldering iro ...

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Wide Range Alarm System

This is an alarm system based on the MKR1000 and a raspberry pi 2 or 3. The system will detect different alarms and notify you if necessary. Things used in this project Hardware components Arduino MKR1000 × 1 Raspberry Pi 2 Model B × 1 Software apps and online services Microsoft Windows 10 IoT Core Microsoft Azure Story This project is a modular alarm system. It uses an arduino MKR1000 in every unit, which ...

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Arduino-Based Shadow Alarm

Shadow alarms are usually used for protection against theft. A shadow alarm is a device that sounds an alarm when a shadow falls on it. Described here is a simple circuit of an Arduino-based shadow alarm. This compact shadow alarm unit is capable of sensing a moving shadow in a restricted area, and can be easily installed on a wall, window or door to protect your valuables from theft. Constant lighting is r ...

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Alarm System

The objective of our project was to create an alarm system that could detect an intruder using an IR motion sensor. We used a keypad so the user could enter their password to arm and disarm the system. [gallery columns="2" size="medium" ids="31154,31155"] We also included an LCD so that users would be informed which state the alarm system was currently in as well as giving the user a response when entering ...

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Interfacing Flame Sensor with Arduino to Build a Fire Alarm System

In this article we interface Flame Sensor with Arduino and learn all the steps to build Fire Alarm System by using Arduino and flame sensor. Flame sensor module has photodiode to detect the light and op-amp to control the sensitivity. It is used to detect fire and provide HIGH signal upon the detection. Arduino reads the signal and provides alert by turning on buzzer and LED. Flame sensor used here is an IR ...

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Smart Phone Controlled Arduino Mood Light with Alarm

Smart Phone Controlled Arduino Mood Light with Alarm I recently purchased the Neo Pixel LED strip and was quite impressed by the way it works. The tiny LED’s have an inbuilt driver IC which helps us to control each LED individually and can produce a wide spectrum of colors. Being a garish person who is obsessed with colours I really loved watching these tiny LED’s changing colors so I decided to build somet ...

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Event Monitor for Independent Senior Citizens

Cost and availability of retirement villages cause aging people to stay in their own homes. This system monitors their daily events. Story About this project The aging population of the world presents enormous financial challenges. There are not enough retirement facilities to cater the needs of the elderly and costs are high. The tendency is that elderly people prefer staying in their own homes for longer. ...

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Arduino – Laser Tripwire Alarm System

Hello everyone, In this instructable, we will be building a laser guided tripwire alarm system using a development board. Step 1: Parts Components used in this project: Development board - SainSmart Leonardo R3 Enclosure - Junction Box Trip wire - Red Dot Laser Diode Alarm - Buzzer Sensor - Photoresistor Power supply - 9v battery Wire - Male to Female Breadboard Jumper cable Resistor - 10k I used an improvi ...

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Arduino Based Digital Clock with Alarm

This Arduino based Real time clock is a digital clock to display real time using a RTC IC DS1307 which works on I2C protocol. Real time clock means it runs even after power failure. When power is reconnected, it displays the real time irespective to the time and duration it was in off state. In this project we have used a 16x2 LCD module to display the time in - (hour, minute, seconds, d ...

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Door Alarm using Arduino and Ultrasonic Sensor

Security has always been a major concern for all of us and there are many Hi tech and IoT based security and surveillance system are available in the market. Intruder or Burglar Alarm is one of the classic and popular project among the Electronics students and hobbyists. We have also built many Burglar Alarms based on various technologies: Laser Security Alarm Circuit IR Based Security Alarm Burglar Alarm u ...

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