
This project uses the sound of mosquito repellents is the safest way for health. Because we generate a high-frequency sound wave that mosquitoes do not like.According to the theory of scientists found that Mosquitoes do not like the high frequency waves. So, it flies away because this sound interferes with its flying.
we have designed a circuit using 555 timer IC in Astable mode to produce 40 kHz frequency sound. We have connected Buzzer at the output (PIN 3) of the 555 timer IC so that a sound of desired frequency can be generated. We should note here that we need a HIGH-frequency Piezo buzzer so that a high-frequency sound can be generated. Also note that we might not be able to hear the sound, generated by the circuit as it is beyond our audible range.
https://www.tinkercad.com/things/7rPRsMSoZxc-copy-of-mosquito-repellent-using-555-timer/editel?sharecode=Ctz4q8_hviXIloGsEgJRPjUqpT5mRWQn3vFBe1aIyD8