I wired this OLED SPI display https://www.banggood.com/0_96-Inch-White-IIC-I2C-OLED-Display-Module-12864-LED-For-Arduino-p-932606.html to my Arduino Duemilanove (original).
I’m using the U8g2 library and there’s a weird behaviour because There’s a column of pixels always on and another column instead is missing. Please look at the photo.
What do you think? It could be a hardware issue? I did a mess when I soldered the pins, so it wouldn’t be a surprise if I ruined it.