Controller valve handler. What MCU should this be ?

[sergioarduino]

Hello.
Yesterday I decided to open this Wi-Fi smart handler:

This is the internal board:

I plan to add an ESP01S or a mini ESP32 for other features. But first I would like to find out what kind of microcontroller should this CBU be ? Anyone want to make a guess ? Is there any that I can test in the arduino IDE ?

Note that it has pins RX TX GND, etc, for programming.

I have an FTDI here.

Is there anything I can do just to try and see if it's compatible with the arduino IDE?

NOTE: I am aware that I can delete the program and lose all current product functionality.

Thanks

[kolaha]

seems to be simple schematic. you can make your own device with well known parts

[sergioarduino]

@kolaha

seems to be simple schematic

And truth. I said at the beginning of my text.

[Railroader]

Do You know data to send to the valve?

[sergioarduino]

No. It is controlled by these standard automation apps, some listed in the first picture. On them it shows only the ON-OFF status. But my intention first is to know about the CBU. See if it is compatible with the arduino IDE. A very simple question.

[awneil]

@sergioarduino

what kind of microcontroller should this CBU be ?

Could be anything - quite likely some chinese "no-name" part.

I'd say highly unlikely that it has an Arduino-compatible bootloader.

It seems to have testpoints for "RX" and "TX" - try looking at the TX to see if there's anything informative coming out of there...

As it's WiFi, use something like WireShark to sniff the commands & responses

[sergioarduino]

@awneil

Could be anything

OK. Thought I'd post here in hopes someone else has gotten over this same issue. I'm going to follow my first idea of ​​using an ESP mini in place of this CBU.

[KASSIMSAMJI]

@sergioarduino

But my intention first is to know about the CBU

This could be helpful

[cedarlakeinstruments]

Remove it and look underneath for markings.

[jim-p]

Connect your FTDI board, plug it in to your computer and see if it recognized by the operating system

[sergioarduino]

@KASSIMSAMJI

This could be helpful

This is it then. It is manufacturer specific. I thought it was more generic and that maybe I could use the arduino IDE. I'll keep trying to add any ESP, like mini.

Thanks