Note – This software will work on any Android phone. The 3D printed casing has been custom designed to fit an old Samsung Galaxy S6 I had lying around. I have included the Sketchup .SKP file, along with the STL, so you are welcome to modify to fit other models.

The cable should be a nice tight squeeze and will feed out through the back leg, so it's well hidden

No rooting or special mods are needed, just some simple software and a few settings.

UPDATE - Due to requests, I have now included options for 720p and 1080p resolutions.

Settings for Android phone

1) Unlock developer mode on phone - This is done by simply going to the phone Settings -> About Phone -> Build number (tap on the build number 7 times to unlock developer. It will confirm with a prompt)

2) Now go into Settings -> Developer options (new menu option at bottom) and ensure the following
-"Stay Awake" set to enable - This will keep the screen on always, when the PC is on giving it charge)
-Under the debugging tab, ensure "USB Debugging" is set to enabled

3) Install "Remote Panel" by Odospace - available on playstore https://play.google.com/store/apps/details?id=com.odospace.remotepanel&hl=en_AU

4) These are not essential, but will help things to work smoothly.
Settings -> Display -> Screensaver -> Set to none
Settings -> Display -> Screen Timeout -> Set to 15 seconds (lowest - This is how long it will take to turn off the screen, once the PC is shutdown)

I would also suggest to set the phone to "Flight Mode" and delete any unneeded applications to improve the battery life. Essentially we are hoping the phone will hold charge between each use of the PC, so you never have to turn it on. Another great idea is to set the remote panel application to the phone’s desktop, so it's easy to launch.

You can also use an app on the phone such as “AutoStart Manager”, so if the phone dies, you can set it to auto run Remote Panel on startup. Available on Google Playstore, link is here - https://play.google.com/store/apps/details?id=com.phongphan.auto.start.manager&hl=en

Settings for PC

Plug phone into any USB port on PC using standard data cable

Download Install Aida64 Extreme Edition - https://www.aida64.com/downloads/latesta64xe

Download and install Remote Panel Server for Windows - http://apps.odospace.com/RemotePanelSetup.exe

We now need to go into the settings on Aida64 and set it to use the phone as an external display

File -> Preferences - > Select “LCD” from Menu on left
Click on the “Odospace” tab and input the LCD Resolution “2560 x 1440” for Galaxy S6 or other 1440p devices. If you have a 1920x1080 device, input the resolution as "1920x1080" and for 720p devices, input as "1280x720"
Now check “Enable Odospace LCD Support” option.
Set LCD Background colour to Black

Go to “LCD Items” on left menu
Click “Import” on top right
For Galaxy S6 and 2560x1440 resolution devices, Select “PC_Stats_1440p.oslcd”, Select Apply/OK to save settings. Note - If you are using a 1920x1080 device, please use "PC_Stats_1080p.oslcd" and for 720p devices, use "PC_Stats_720p.oslcd"

Go to “LCD Options” on left menu
Check “Automatically cycle through LCD pages” – I’ve set this to 30 seconds, anything will work! This will ensure it swaps between the stats page and showing the time & date. I have set it like this to ensure the screen does not burn, as this is typical for an OLED screen over time.

In Odospace app on phone, long press will bring up the menus
Set “Full Screen” to enabled and “Keep Screen on” to disabled (screen will already stay on, as set in developer options. Having this disabled will ensure the screen turns off with the PC)

Good luck and enjoy!