After reading that article https://www.instructables.com/id/DIY-Rechargeable-Electronic-Mosquito-Repeller/ I was thinking that ESPHome might be used to build Mosquitto/cat repeller adjusting frequency that is supposed to be around 31Khz for mosquittos for example !
Is it ok to use a PWM output to do that ? and to drive a piezo or a speaker with it ?
All studies âfound that there was no difference in the number of mosquitoes that landed on the bare body parts of the human subjects with or without an EMR,â Enayati said. âHence, these devices do not work in repelling mosquitoes.
Yeah, and I tried some of the high frequency cat ârepellentâ apps that are available for android phones. While playing it thru a bluetooth speaker the cat just stared at it questioningly for a few seconds then just ignored it the rest of the timeâŚ
Thanks you too @tom_l and @finity and in fact I made a mistake as my initial goal was as cat repellent and not mosquittos ! Iâm not sure android phones are best to test such things on cat considering bandwith of electronic inside designed for human audio and not US no ?
I have read few articles that look to confirm that frequencies around 31kHz should do the trick, what do you think about it ?