Water Level Detector Using NE555 - Design Phases And Construction Issues

What design phases have you had, analysis/simulation results. (125 words, design drawings, prototype photos, etc.)

Main issues you encountered during the construction. What have you learned during this phase? (125 words, photos, etc.)

What experience have you acquired during the test and characterisation of your circuit? (100 words maximum, screenshots, photos, etc.)

There are some design phases which is employed in the design of electronic devices like water level detecting using NE555 (Rutherford, 2017).  Some of these design phases include the following;

This is the first phase for the design, and in this stage, the idea of what is needed is conceptualized as well as the identification of a requirement for an undefined product makes the research to define the product.

This is the key phase in the development of the water level detecting using NE555, it actually defines how the system will operate and if there is an error here then the whole design will not work as intended. And this can be illustrated using the following; 

3. Packaging and Printed Circuit Design
4. Production and testing 

The main problem which was encountered here was the failure LED to continue glowing, it worked for just 5 minutes and then stopped. This could be due to temperature variations which highly affect the normal operation of the LED. Therefore the Buzzer was used instead because the buzzer is not affected by the temperature variations which does not affect the Buzzer.  Another reason this failure could be the application of more current to the LED which could also make it not to operate as intended. This could also be a possible reason for the failure since most LED used in such an experiment has a low voltage and current ratings as compared to the buzzer. 

For the water level detector using NE555 operates perfectly with the use of buzzer to give the output as opposed to LED due to the short comes of the LED but the problem will come when a deaf wants to know the level of the water using this circuit and a buzzer (Fraden, 2015). From the experiment, it has also been learned that this circuit can operate with different values of R1 and R2 C1 at 1 µF for perfect operation of the circuit and R3 and R4 in most cases kept at 1?. This circuit is one of the projects which does not use any controller but instead uses timer NE555. The power supply Vcc can also vary from 3 V to 12 V

References

Fraden, J. (2015). Handbook of Modern Sensors: Physics, Designs, and Applications. Hull: Springer.

Rutherford, J. (2017). The Ultimate Beginner's Guide to the 555 Timer: Build the Atari Punk Console and Other Breadboard Electronics Projects. Chicago: Independently Published.