Problems with oled display and arduino Pro Mini atmega328

Other Hardware Displays
1

hi i have a arduino mega and i have a code with this IIC_without_ACK library and this oled work perfect on PWM pin 8 and 9, but on arduino pro mini atmega328 not work i set 3,5 i already set 8, 9. the oled is only 4 pin vcc gnd scl sda

#include <IIC_without_ACK.h>
#include "oledfont.c" //codetab

// pin to oled
#define OLED_SDA 3
#define OLED_SCL 5

Pro Mini atmega328 5V 16M Arduino Compatible+FIDI FT232RL USB to Serial adapter

I need help, i see in this link

the pinout of board and says PWM port : 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analogWrite() function.

how i can change the code in arduino mega to pro mini?

2

Hi and welcome.

Please read the instructions (click !) for these forums,it can be found on top of any of the forums.
You put your question in the wrong section, it will be moved if it hasn't already.

You found information for the pro mini, but you are still using the wrong pin numbers (given the info you supplied, you might have had a typo).
In the PDF-schematics you can easily find that A5 == SCL and A4 == SDA.
Connect your OLED to those pins and you should be fine.
Also you might need to use some pull up resistors for these two pins.

There's a lot of OLED screens available, not all have the perfect carrier board (the CRIUS ones i've got are notorious).
You can find info about this on these forums, they can be made to work correctly even with these design flaws.