Grayscale Flexible OLED Breakout for Arduino Uno Wifi Rev2

Components & Accessories LEDs
1

I am trying to make the Sparkfun Flexible Grayscale OLED work not only on an Arduino Uno (there it works like a charm), but also on the Arduino Uno Wifi Rev2. I have understood that the Rev2 is entirely different from the Uno as it uses a different microchip and that the SPI signals are available only on the Rev2’s ICSP header rather than on D11-13 as it is the case on the Uno.

So I cabled SCLK from the display to SCK (ICSP-3) and SDIN from the display to MOSI (ICSP-4). Everything else (i.e. CS, RES, GND and VIN) I left unchanged like on the Arduino Uno, also in the code.

Nothing works. Is there anything else I have to change in the wiring or in the code, especially when initializing the display?

//Initialize the display with the follow pin connections

SSD1320 flexibleOLED(10, 9); //10 = CS, 9 = RES

Or in the SSD1320_OLED.h library used for the Flexible Grayscale OLED in connection with the SPI.h library?

Thanks so much for your help!!!

IMG_4580.jpg
IMG_4580.jpg1512×2016 755 KB

2

It looks like our library hard codes MOSI and SCK to the pin numbers an Uno uses and those are different on the Uno WiFi boards.

Sadly we don’t have a fix for this right now, but if you put in an issue on the [libraries Github page, the author will see that and may be able to get it fixed.](SparkFun_SSD1320_OLED_Arduino_Library/src at master · sparkfun/SparkFun_SSD1320_OLED_Arduino_Library · GitHub)

3

Hi Chris! Thanks so much! Have put in an issue at Github. Nevertheless: Thought that you guys, especially your colleague El_Duderino, could help as it seemed the case for a very similar issue involving a Micro instead of an Arduino Uno. Could he potentially have a look at it? Here the other post: viewtopic.php?f=63&t=50048