Whenever you consider a show that connects to its supply over HDMI, you most likely consider the TV in your lounge, your desktop monitor, or possibly even a smaller show, like a transportable monitor. You most likely do not consider an OLED PC monitor that measures 0.96 of an inch diagonally.
Whereas acknowledging the restricted makes use of for a tiny HDMI PC monitor, maker mitxela had the urge to get a 128×68 dot matrix OLED display screen up and working as a PC monitor that connects on to its system. The maker described the creation because the «smallest and worst HDMI show ever.»
A small OLED display screen is not particular by itself. Makers use them for all kinds of initiatives, like DIY smartwatches, message boards, or climate shows, for instance. What makes mitxela’s challenge distinctive is that it turns the OLED panel into an ordinary PC monitor that may be plugged into the PC’s HDMI port instantly—no Arduino or microcontroller required.
Mitxela confirmed the monitor related to a Linux system and working i3, an open supply tiling home windows supervisor. The maker used the show to open a second terminal in i3, resize the home windows, and cut up one.
To create the mini monitor, mitxela opened an HDMI cable to get entry to 4 needed wires and related them to the monitor by soldering them to a header connector, the maker stated.
The trick was to leverage the HDMI cable’s I2C EEPROM (electrically erasable programmable read-only reminiscence). Mitxela stated this allowed the monitor to work over the DDC (show information channel) protocols that dictate how a PC reads primary details about the monitor, like decision.
Maybe essentially the most handy a part of this challenge is that the monitor doesn’t should be plugged into an outlet.
«The 5V line on an HDMI port can apparently supply as much as 50mA, so we do not even want an influence provide,» mitxela stated.
The maker famous that the monitor’s body price is «not nice.» There’s additionally loads of threat for broken elements, particularly when connecting it to a laptop computer, so the challenge will likely be a no-go for a lot of. However if you wish to be taught extra in regards to the challenge, the script information can be found by way of GitHub.
You possibly can take a look at the DIY monitor in motion under: