Hi
Has anyone come across the display in this link
https://www.aliexpress.com/item/Smart-Display-16S-24S-32S-Cells-300A-200A-150A-100A-70A-Lithium-Battery-Protection-Board-Balance/32826469363.html
It looks like it uses an I2C bus is backlit is a pixel not character display if there is a library out there for it then the price is quite reasonable I might pick one up on the of chance, I should then be able to find some identifying numbers.
Kendrick
I suspect that it is a ST7920 128x64 display using SPI. It is unlikely to be I2C.
OTOH, most Ebay ST7920 displays have 16 pins. Many GLCD controllers have SPI interface.
Perhaps olikraus will recognise it.
David.
The reason for suspecting I2C is the 4 wire link from the BMS to the display.
Kendrick
david_prentice:
I suspect that it is a ST7920 128x64 display using SPI. It is unlikely to be I2C.OTOH, most Ebay ST7920 displays have 16 pins. Many GLCD controllers have SPI interface.
Perhaps olikraus will recognise it.
David.
I also think it is a ST7920. In SPI mode, the ST7920 can be controlled with only two wires.
Oliver
Edit: A ST7920 based display is available for less than $5.
hi
The display arrived today. it looks like you are correct, it came with a driver board specific to the BMS it was sold with.
if I find it useful I will get it from alternative sources without the driver board.
I'll have a look at the library's and videos there are out there to see what I can get it to do. Does anyone know the max number of text lines and columns can be fitted on the screen.
any informative videos would be most appreciated.
kendrick