Final Project

For my final project I will make a humidifier that turns on when the humidity in the room is too low and, depending on the time of day, will release scent.

First I made a schematic for the communication board which will be the "brain" of the project. This board will hand on the wall and is responsible for monitoring the humidity and temperature in the room. The numbers will be displayed on an OLED diplay attached to the board. Once the humidity drops below 40% humidity the ESP32C3 on the board will connect to the internet and check the time. Depending on what time, the board will send a message to another board, starting up the correct humidifiers.

The wall board conisits of an OLED dilpay, a BME280, a phototransitor and an LED for troubleshooting and a button.

I created a schimatic in KiCad and assigned footprints to the sketch.

Here is the final wall board:

The ultrasonic atomizer modules I am using might break if they have activate when they are dry. I am therefore using the capacative touch pins on an ESP32-S3 to detect if there is water in the container. If no water is detected, the humidifiers will not work.

To test this I first made a touch board:

KiCad: