[PLUGIN] MPD OLED - installation & configuration plugin

michel8166 · February 5, 2023, 9:46am

can the oled screen be connected to the 5 volts of the raspberry pi? I don’t have a 3.3 volt rail left.

I also tried with an external power supply, but then the OLED screen is not recognized by the raspberry pi or does it not work with an external power supply anyway?

supercrab · February 5, 2023, 11:21am

No. I think 5v might do some damage but you can give it a try if you have a spare Just get a 3.3v drop-down board

Wheaten · February 5, 2023, 11:46am

According the specs it’s 3-5V. But I would take 3 10K resistors in serie and connect the OLED over 2 resistors.

michel8166 · February 5, 2023, 11:53am

ok then i will try that.

michel8166 · February 5, 2023, 11:56am

then I’m not going to take that risk with the raspberry pi, then try with resistors.

Wheaten · February 5, 2023, 12:04pm

The rPi is not at risk here, the lifespan of the OLED might, connecting it straight to 5V as Supercrab mentioned.

michel8166 · February 5, 2023, 4:21pm

tried with resistors but it doesn’t work then, screen doesn’t turn on properly and can’t keep up.

michel8166 · February 5, 2023, 4:22pm

just done through the 5 volts and works fine and so far no problem with the raspberry pi.

supercrab · February 5, 2023, 6:21pm

Is the screen any brighter running on 5v?

supercrab · February 5, 2023, 6:22pm

Is the screen any brighter running on 5v?

michel8166 · February 5, 2023, 6:46pm

No just normal brightness.

Wheaten · February 5, 2023, 6:48pm

i like the left corner

supercrab · February 5, 2023, 8:29pm

Groovy! Maybe these screens have a regulator. I’ve never checked

Wheaten · February 5, 2023, 8:35pm

That would then be U2. To darn small to read.

supercrab · February 5, 2023, 9:43pm

Ah yeah it’s an (XC6206) 662K regulator for 3.3v

rak39 · February 24, 2023, 8:14pm

The MPD_OLED 1.1.1 plugin is almost perfect.
Question: why almost?
Volumio 3 startup sound stutters.
Also when starting to play Internet radio or music from Tidal, the sound stutters for a short time, then everything plays smoothly.
It’s not a big problem, but the MPD_OLED plugin is so great that the presence of even such a small glitch is quite noticeable.
Previously in Volumio 2 with the early plugin mpd_oled there was no such problem.
Is there a way to fix this?

supercrab · February 26, 2023, 4:18pm

@rak39 It’s a not a problem with the plugin itself, I think it’s down to an ALSA issue. Unfortunately, I cannot fix any ALSA issues. I don’t have access to ALSA source code and I don’t understand ALSA. You could try running mpd_oled in standalone mode though:

github.com

antiprism/mpd_oled/blob/master/doc/install_volumio3_deb.md

# Install instructions for Volumio 3

These instructions are for installing mpd_oled with a binary package on
Volumio 3.

The binary package should be the best option for most people, but if you
would like to build and install the current mpd_oled repository code then see
[Install instructions for Volumio 3 using source](install_volumio3_source.md).

## Base system

[Volumio](https://volumio.org/) should be installed. Ensure a command line
prompt is available for entering the commands below (e.g.
[use SSH](https://volumio.github.io/docs/User_Manual/SSH.html).)

## System settings

Configure your system to enable I2C or SPI, depending on how your OLED
is connected.

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rak39 · February 28, 2023, 5:45pm

Thank you, it’s a small glitch, it can be accepted on a daily basis. I’m sticking with the plugin for now, it’s great!

Andron66 · March 18, 2023, 9:25am

Hi. The plugin is installed manually. I want the histogram to be displayed in full screen. What configuration should I write?

supercrab · March 18, 2023, 10:00am

Hi, this is currently not possible