Introduction

Animal is a creature created by God on this earth. But the animals can also cause problems to our daily life. Animal which are pests such as mosquitoes, cockroaches, rats and many more causes problems where often occur in homes. Pest problems often associated with housewives of women who are always conscious of the cleanliness of the house. With another consumer indirectly therefore need to deal with this problem must be addressed immediately so that it does not persist into the worse.

When compared the general insect repellents that sold in the market, the type of insect spray pesticides works only on mosquitoes and cockroaches, while the electricity was only able to get rid of mosquitoes and flies and sometimes even ants. For all the use is not fully effective repel pests from interfering with users and housewives. The function of the electronic animal repellent is the most effective way to address this problem. This system is a type of insect repellents for the needs of each user and housewives who have problems during sleep or in any situation.

In general, animal and other living creatures have a limited hearing range, which in other word, frequency that they can be hear are limited. Similar to human, we cannot hear low frequency sound below 64 Hz and also annoyed with high frequency sound which above 23 kHz. Based on the theory, animal like mosquitoes and cockroaches will be annoyed with some high frequency sound that different compared to human.

Species	Approximate Range (Hz)
human	64-23,000
dog	67-45,000
cat	45-64,000
cow	23-35,000
rat	200-76,000
mouse	1,000-91,000
bat	2,000-110,000
owl	200-12,000
chicken	125-2,000

Pest repellent project that we have created is an instrument to help the consumer or housewife to repel pests more easily also save time and energy. Differ from other pest repellents, our project using high frequency sound to repel pest. For this project, we used the PIC circuit using IC that works to control the frequency .In the circuit timer IC 555 is used as an oscillator, it generates frequency of 200 HZ to 62 kHz. The working frequency of the circuit can be set by rotating preset resistor, and the speaker converts the electronic frequency to sound frequency. Try to keep the frequency of the sound as high as possible. And make sure you don’t hear the sound of this circuit by keeping it above 20 kHz, The annoying sound will be heard by insects but not by you because humans don’t normally hear sound of frequency higher than 20 kHz. Overall, the main function of our project is to generate annoying sound that is higher than the target animal and thus repel it.