1.5" color OLED Troubleshooting

[mucilo]

I have the oled display from here: http://learn.adafruit.com/adafruit-1-5- ... d/overview

I have wired it up and loaded the test example, but the display does nothing. I am pretty sure it is wired correctly. The pins have the following voltages:

+5V => ~4.85V
MOSI => 0-0.2V changing over the range as the example runs
SCK => 0-0.2V changing over the range as the example runs
DC => 0-4.85V changing over the range as the example runs
RESET => ~4.85V
OLEDCS => ~4.85V

Is there anything wrong with these results? Anything else I can do to troubleshoot?

Thanks

[adafruit_support_bill]

Post photos showing your soldering and all of your connections.

[mucilo]

http://imgur.com/a/GN7mn

The wiring was a little hard to show because there are two brown wires, but I am absolutely sure that the first brown wire runs ground to ground and the second runs MOSI to pin 3.

GND -> GND (G) Brown
5v -> VIN (+) Red
#2 -> SCLK (CL) Black
#3 -> MOSI (SI) Brown
#4 -> DC White
#5 -> OLEDCS (OC) Purple
#6 -> RST (R) Beige

Thanks

[EternalCore]

http://imgur.com/a/GN7mn

The wiring was a little hard to show because there are two brown wires, but I am absolutely sure that the first brown wire runs ground to ground and the second runs MOSI to pin 3.

GND -> GND (G) Brown
5v -> VIN (+) Red
#2 -> SCLK (CL) Black
#3 -> MOSI (SI) Brown
#4 -> DC White
#5 -> OLEDCS (OC) Purple
#6 -> RST (R) Beige

Thanks

Hello Mucilo,

From the pictures you posted, it appears as though your solder isn't properly soldered to the pads; Which is most likely resulting in a bad connection or no connection.

Use this tutorial to help fix the solder issue and try it again: https://www.sparkfun.com/tutorials/106

Then report back.

[adafruit_support_bill]

I see some cold joints there and some with insufficient wetting of the solder pad. This tutorial page has some tips on identifying and repairing problem solder joints:

http://learn.adafruit.com/adafruit-guid ... n-problems

[EternalCore]

I see some cold joints there and some with insufficient wetting of the solder pad. This tutorial page has some tips on identifying and repairing problem solder joints:

http://learn.adafruit.com/adafruit-guid ... n-problems

Oooh I missed that page. Nice Post!

[mucilo]

http://imgur.com/pEYZ4HJ

OK, I re-soldered and tried driving it with an Uno instead of the Nano. Still no response.

[adafruit_support_bill]

Still no response.

Can you elaborate? Is the backlight on? Do you see a black screen? White screen? Random screen?

What does the Serial Monitor report when you run GraphicsTest?

[mucilo]

Sorry, as you can probably tell, I am pretty new to Arduino. The screen stays black and the backlight does not come on. I don't understand by what you mean by GraphicsTest.

If you mean the 'Test' example that comes with the Adafruit_SSD1351 library, there is nothing on the Serial Monitor while the sketch is running. If GraphicsTest is some other sketch or function can you please explain?

Thanks

[adafruit_support_bill]

For the 1351, the test sketch is called "test". We do test these these displays as they come from the PnP machine. Please post photos of your connections to the Uno.

[mucilo]

OK, that is the sketch I am using.

Here are my connections to the Uno: http://imgur.com/a/705Mp

With the Uno, I am getting this on the serial monitor: BANNED

I don't understand why it is these characters. I am using 9600 baud with no line ending

[mucilo]

adafruit_support_bill can I get a response? Are you giving up trying to help me?

[adafruit_support_bill]

With the Uno, I am getting this on the serial monitor: BANNED

I don't understand why it is these characters. I am using 9600 baud with no line ending

The test sketch uses:

Code: Select all

Serial.begin(115200);

Change the settings on your serial monitor to match.

[mucilo]

Ok the serial monitor output is this:

hello!init
325
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
done

[adafruit_support_bill]

OK. It is communicating with the display controller. But there must be something broken between there and the actual display. Contact support @adafruit.com with a link to this thread for a replacement.