tent alarm
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Motion Detector Sensor Circuit
This circuit is a motion detection sensor that utilizes a light source and detector as an infrared motion detector. It incorporates components such as a light-emitting diode (LED), a phototransistor, a transmitter, a receiver, an NE555 timer configured as an...
Easy-auto-alarm
Refer to (a) for the timing information related to the alarm circuit depicted in (b). When departing from the vehicle, the arming switch should be flipped, and the door closed to activate the device. The subsequent opening of an entrance...
Alarm Sounder For Flex Switch Circuit
This is a cross-sectional diagram of a flex switch. They can be used as pushbuttons or even position sensors. This schematic diagram shows an oscillator, which is used as an alarm sounder, triggered by a flex switch.
The flex switch is...
radio wave alarm
This simple alarm circuit can effectively alert users to the presence of an intruder, providing notification before they even reach the doorstep.
The circuit is designed to be straightforward and efficient, utilizing basic electronic components to create an effective security solution....
enhanced shed garage alarm
This is an improved version of the basic Garage/Shed Alarm. The Entry and Exit delays have been extended to approximately 30 seconds, and a timed siren cut-off along with an automatic reset feature has been incorporated. Additionally, the LED indicator...
Open water notification Circuit Design
Boiling water on a kitchen gas stove can lead to issues such as spilling boiling water if the process is not monitored, which can extinguish the flame and cause gas leakage. A notification device can address this problem. The circuit...
Motion-detection Digital Camera circuit
When the sensor detects movement in a room it will take a burst of 10 photos with the digital camera. Each photo is taken at 0.5sec interval. After the 10 photos, the camera waits 3 seconds for further movement and...
Automatic Room light Control With Bi Directional Visitor Counter
The objective of this project is to create a controller-based model that counts the number of individuals entering a specific room and activates the lighting accordingly. This is achieved through the use of sensors that detect the current number of...
Fridge Door Alarm Circuit
Emits a beep if the door remains open for more than 20 seconds. This circuit is housed in a compact enclosure and is positioned in the refrigerator near the lamp or the opening.
The described circuit functions as a door alarm...