SSD1306 displays in various sizes

[Banana71]

Today I tested a 2.42" display "4 pin I2C white" and it works.
On the photo from top to bottom:

• SSD1306 0.96’ OLED 128x32
• 1.54 zoll oled modul 1.54 "128x64, as plamikcho has already described it here
• 2.42 zoll oled 128x64, I bought the display from Aliexpress
  It's important to take the 4 pin I2C Version
  

[diyelectromusic]

I don't think we've mentioned it anywhere, but it should also now support ST7789 based displays too, although because there are quite a large number of variants, I wouldn't like to suggest it will support them all! :)

Kevin

[Kirtai]

That could be very handy for those of us with old eyes :)

[shawnpinciara]

@Banana71 can you send the minidexed.ini file with your current configuration? I'm trying with the same 128x64 display (form another vendor i guess: https://www.aliexpress.com/item/4001028369082.html?spm=a2g0o.order_list.order_list_main.26.43b91802OgJweZ) but it doesn't work. plz help!

[diyelectromusic]

The biggest issue I find with these displays is some have VCC/GND swapped and some have SCL/SDA swapped, so I'm sure you are, but just in case - do go by the labels on the display and not any diagrams for connecting it up.

The other thing to watch out for isI2C has 7-bit addresses, but the lowest bit is a read/write bit. So the address is often 0x78>>1 = 0x3C.

Kevin

[shawnpinciara]

Thanks Kevin! now it works... also to mention LCDEnabled=1 using Oled too, which i was missing.

[Banana71]

Hi @shawnpinciara,
For the sake of completeness, here is an excerpt from my minidexed.ini

# HD44780 LCD
LCDEnabled=1
LCDPinEnable=17
LCDPinRegisterSelect=4
LCDPinReadWrite=0
LCDPinData4=22
LCDPinData5=23
LCDPinData6=24
LCDPinData7=25
LCDI2CAddress=0x00

# SSD1306 LCD
# For a 128x32 display, set LCDColumns=20; LCDRows=2
# For a 128x64 display, set LCDColumns=20; LCDRows=4
SSD1306LCDI2CAddress=0x3c
SSD1306LCDWidth=128
SSD1306LCDHeight=64
SSD1306LCDRotate=0
SSD1306LCDMirror=0

# Default is 16x2 display (e.g. HD44780)
LCDColumns=20
LCDRows=2