SparkFun Flexible Grayscale OLED Breakout - 1.81" Arduino Uno Rev3

Components & Accessories Displays
1

Hello, I recently purchased the SparkFun Flexible Grayscale OLED Breakout - 1.81". However, following the hookup table guide for Arduino Uno, I can’t display on at all. Is this tested and verified for the Uno Rev3?

Product page:

https://www.sparkfun.com/products/14606 … 1d7c5780f3

Reference hookup table guide:

https://learn.sparkfun.com/tutorials/fl … 1614721076

Any help would be very much appreciated.

Thank you.

2

These have been tested on an Uno and should work for basic text on the Uno.

Can you send a photo showing the top and bottom of your board and a photo showing how you have things connected to the Uno?

3

Thank you for your quick reply.

Right now the breakout board is standing on headers on a bread board connected to the UNO. I haven’t soldered anything yet.

Connections is wired up following your hookup reference for Arduino. Im using the library from the guide, e.g the Hello World program. I think it is version 1.4.

Images attached showing connections and wiring from the breakoutboard to the Arduino.

[ [](20210412-174022-compress84 hosted at ImgBB — ImgBB)](20210412-173954-compress68 hosted at ImgBB — ImgBB)

4

Are your headers soldered to the display board or are they just stuck through the holes?

5

They are just stuck through the holes. I’m fairly new to electronics and I realize this might be the issue. I will solder tonight and return back with the result. I assume this is what you would recommend as well?

6

Yeah, they need to be soldered so that you get a good electrical connection between the pins and the board. That should clear up your issue. :slight_smile:

7

I just wanted to let you know that once I soldered everything it worked.

[

However, only a small part of the screen has full brightness.

[

Perhaps not related but when I pass a value to the screen counting from 0 to 1 suddenly this happens.

[

[

Any advice or suggestions that can help me on my way is highly appreciated.

Here’s my code:

/*
    Program for the 1960s Panco of Norway table top Mini-Match.
*/

//Sparkfun Flexible Grayscale Oled was the only display to fit the narrow space of the game.
#include <SSD1320_OLED.h>

//Initialize the display with the follow pin connections
SSD1320 flexibleOLED(10, 9); //10 = CS, 9 = RES

//Variables for the two goals
int Home;
int Away;

#define LEDPIN 13

//Pins for data connections for the breakbeam sensors
#define SENSORPIN 7

//Initialize and define states for the breakbeam sensors
int sensorState = 0, lastState = 0;

void setup()
{

  //Initializing Arduino's board LED for output.
  pinMode(LEDPIN, OUTPUT);

  //Initializing pin for input from the breakbeam sensor.
  pinMode(SENSORPIN, INPUT);

  //Activate the pullupp resistor for this pin to make the two sensor states clear for Arduino.
  digitalWrite(SENSORPIN, HIGH);

  //Start value for goals.
  Home = 0;
  Away = 0;

  flexibleOLED.begin(160, 32); //Display is 160 wide, 32 high

  flexibleOLED.clearDisplay(); //Clear display and buffer

  flexibleOLED.setFontType(1); //Large font
  flexibleOLED.setCursor(32, 6);
  flexibleOLED.print("MINI-MATCH");

  flexibleOLED.display();

  delay(2000);

  flexibleOLED.clearDisplay(); //Clear display and buffer
}

void loop()
{

  // Read and save states of the sensor
  sensorState = digitalRead(SENSORPIN);

  // Show the goal values on the display
  flexibleOLED.setFontType(2); //7-segment display style characters, 10x16-pixels each.
  flexibleOLED.setCursor(15, 8);
  flexibleOLED.print(Home % 10);
  flexibleOLED.display();
  
  if (sensorState == LOW) {
    digitalWrite(LEDPIN, HIGH);
  }
  else {
    digitalWrite(LEDPIN, LOW);
  }

  if (!sensorState && lastState) {
    Serial.println("1 Broken");
    Home = Home + 1;
  }

  lastState = sensorState;
}

](https://ibb.co/vBcbB3b)](https://ibb.co/HxTP0P5)](2021-04-19-10-56-52 hosted at ImgBB — ImgBB)](2021-04-19-10-58-18 hosted at ImgBB — ImgBB)

8

For some reason adding the ```
flexibleOLED.setContrast(255);


The issue with only a small area of the screen is lit persists unfortunately :cry: