DIY – Mosquitoe Repellent using 555 timer?

Before designing the electronic mosquito repellent, we need to understand why mosquitoes bites humans. Only The female mosquito is the one that bites (males feed on flower nectar). She requires blood to produce eggs. After breeding female mosquitoes avoid male mosquitoes.

Generally, male mosquitoes generates frequency in the range of 20KHz-40KHz. So, we are going to create this frequency sound manually to avoid female mosquitoes. This sounds wouldn’t disturb humans. Because human ears are only capable of hearing frequency in the range of 20-20KHz.

Components Required:

  1. Battery (9V)
  2. Resistors (1kΩ x 1)
  3. Capacitors (0.01µF x 2)
  4. NE 555 timer
  5. Piezo Buzzer
Mosquitoes Repellent


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