absolute beginner

[hideki]

I bought this base.
The program will learn from this.
I want to build an environment for attachments.
Please guide me.



Please check pdf file.

[admin]

the hardware connection is no problem. But how to do with software? you have two way:
1. write arduino IDE code by yourself.
2. download open source free firmware to use. such as tamota, but that need you to config setup.

[hideki]

Which one is more stable?

If the arduino IDE code program is completed, it seems that it can be adjusted by changing the numerical value of the corresponding place at the site.

Also, as an additional function, if the water level drops, I would like to send an email alert. Is that possible?

[admin]

Which one is more stable? all is same, it's according to your code, if you can program code, suggest to use arduino IDE code, your needs is easy, just only trigger OUTPUT by INPUT value. You can do some step:
1. read analog or digital input of KC868-A4 (that have connected with your sensor, maybe dry contact water level sensor or analog water level sensor)
2. compare with a value, such as IF (water level) < xxx THEN relayX is ON/OFF
3. send notification by email or by other way, already have arduino library can do this, here is sample demo: https://randomnerdtutorials.com/esp32-se...duino-ide/