Circuit Lake

Electronic Project and Circuit Collection

Alarm Related Resources


Gas Leakage Alarm

October 15, 2011 By: admin Category: Alarm, Detector, Sensor No Comments →

Here is a circuit that can be used to detects the leakage of LPG gas and alerts the user through audio-visual indications. The circuit uses SEN-1327 gas sensor module from RhydoLABZ. Its output goes high when the gas level reaches or exceeds certain point. A preset in the module is used to set the threshold. […]

Wireless Pool Alarm, WatchDuck

June 16, 2011 By: admin Category: Alarm, Microcontroller, Monitoring, PIC, Project No Comments →

The WatchDuck is an accelerometer-based low cost wireless pool alarm. It will give an alert when a child or an object fell into water. All operation in this project is controlled by PIC 18F23K20 microcontroller. The alarm is composed of two parts: the detector and the base station. The detector is using an accelerometer module […]

Simple Temperature Alarm

February 16, 2011 By: admin Category: Alarm, Digital, Measurement, Microcontroller, PIC, Project No Comments →

The project shows you how to build a simple temperature alarm with PIC16C84 microcontroller and a 2-line LCD display. It can be used as a temperature alarm or a thermostat – the only difference being that with an alarm an intermittent beep is produced when a limit is exceeded.

Chimney Fire Alarm Monitor

January 19, 2011 By: admin Category: Alarm, AVR, Detector, Digital, Microcontroller, Monitoring, Project No Comments →

Chimney Sentinel is remote fire alarm that can give a warning of fires caused by wood-burning appliances. The project uses a probe inserted in the chimney and a remote monitoring unit built based on PIC16F628. When a fire is detected, the device will sounds an alarm before smoke has time to reach other detectors within […]