is there a way to read data from chinese motor controllers with raspberry pi or arduino

[mavci]

hi !
I have an electric car project and I have completed the project. But I want to read some information from the motor driver and display it on my own LCD screen by combining it with other information I have with the Raspberry Pi or Arduino that I programmed myself. I have a ready-made screen, but I need to design it myself since I will participate in a competition. Can you help me?
thanks for all supports

 

[fechter]

What model is the motor driver?

 

[stancecoke]

Can you help me?

Many usual UART protocols are implemented in the EBiCS firmware: Bafang, 5s, Kunteg, No.2, J-LCD.
Of course for the controller side, but you can easily see, what the display has to send and how it is answered by the controller....

regards
stancecoke

 

[mavci]

I uploaded the photo of these motor controllers below. They were purchased before me. After I took over the project, I contacted the company from which they were purchased, but they could not help me with the datasheet. If I open it up, take a photo and upload them here, can you direct me to which model and datasheet?

The LCD screen I use is similar to the one in the link below. The circuit structure on the back is almost the same, only the appearance is different.

https://tr.aliexpress.com/item/4000141686642.html

 

[rafalg]

Looks like there's no UART, no serial communication, instead the screen seems to measure the battery voltage directly and reads speed signals from the controller. So i think there's a big chance you can do the same readings with Arduino. Don't know what's on the speed wire, if it's pulses or something else. Best way is to test with some oscilloscope. BTW measure the voltages before connecting any computer to that, you will fry it with voltages above 5V.