Research

The project has been completed with the help of sources indicated below during my research period. All necessary information which has been collected are stated below:-

1. http://www.safetyalarms.com/
 This website has provided me the idea of designing Project Swim-SA. Furthermore , this page shows detailed analysis of products used in the prevention of drowning kids.

2. http://www.sonarguard.com/#
 This page given me ideas on how to modify my circuit with a much more sustainable alarm system.

3. http://www.jclahr.com/science/psn/zero/winding/gravity_sensor.html
 The sensor in this page, provided the basic knowledge of allowing me to attempt to use a sensor which could be able to detect the changes in water level motion.

4. http://www.electronics-manufacturers.com/products/sensors-transducers-detectors/piezoelectric-transducer/
 From this site I manage to obtain knowledge on the workings of a piezoelectric transducer and using it to replace the original gravity sensor which was initially being applied to the circuit.

5. http://www.ndted.org/EducationResources/CommunityCollege/Ultrasonics/EquipmentTrans/piezotransducers.htm
 The information present in this webpage gave me the knowledge on how i could use the piezoelectric transducer to produce the output wanted in my circuit.

6. http://home.cogeco.ca/~rpaisley4/LM7555.html#30
 The timer based IC-circuit that is the parts of my project circuit, this page shows the simple configuration that I needed to construct my IC7555 on.