It's the cable and/or the usb power supply/port!, use a genuine 2.0a/2.4a usb cable(one that came with your phone) and plug the cable directly into a pc(not a hub!)usb 3.0 ports usually work better than 2.0 or a genuine cell phone charger rated at 2.0a/2.4a, low voltage, hubs etc can cause issues, I changed my cable and tried other ports and everything worked fine, I also thought mine was broke!
Try running ls -ltr /tmp and finding a file with a name like /tmp/tmp.<some hash> for example: /tmp/tmp.iekIIJ
The latest one will hold the image data, move that to your /root directory and you'll have the oled image data of the last image displayed!
I've tried both command line and web based but Oled is not displaying anything.
I have an Omega2+ with Firmware 0.1.10 b160
I have tried the following but with no success ...
oled-exp power on
oled-exp write "hello"
Also, 'opkg list | grep oled' shows that Oled driver is installed.
Thanks for that, completely missed it. I've tried plugging it in directly, non-directly (stacked on relay board) and even just using power and data lines using a bread board and it wouldn't work. Waited a while and stacked it again and now it's working. No idea what changed, pretty sure I did my last firmware update before this post. @Luciano-S. said in OLED expansion doesn't display anything:
Hi there! If you have a hardware or software issue, please see these guidelines first. A list of previously resolved issues is available here.
I was too busy since I created the topic and did not follow your answers @Lazar-Demin I am glad there is a fix to this bug and I am sorry I was not able to provide what you asked for. In the comming days I will try to test the new firmware and confirm the problem resolved.