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ESP cat scare

The idea

Unfortunately, our carport is regularly abused as a cat toilet. This is to be turned off with an ultrasonic sound.

This device is a combination of the IoT multisensor and the light control component.

It consists of three pir sensors and a relay board which controls an ultrasonic generator. With this mini piezo tweeters are driven.

Parts list

component name manufacturer
4-relais az-delivery
node-mcu az-delivery
PIR AM312
tweeter P5123 Kemo
ultrasonic-generator M048N Kemo
12V power supply
step down converter 12V -> 5V MP1584EN

Pinout

pinout Node MCU relay

wiring

pinout Node MCU relay

Case

The bottom

cat_scare_case_bottom

and the top

cat_scare_case_top