In regards to batteryprojector & scope.
You can control the Micsigscope interface on the projectored screen. with just a cheap 5 dollar air mouse from China
Here with Micsigs own Android app, fx grapped from Google Playstore on the projectors own android interface.
With HDMI cable from scope's HDMI to batteryprojectors HDMI socket...
Connected to a 55" LG 2017OLED (HDMI cable)
And wireless to your PC or Android tablet with the Micsig Windows/Android/iOS app, the lag aint bad, I got around +/-250ms with a decade old NetgearWNDR4300 in another room and update rate, very decent as you can see here..
https://i.imgur.com/L2IxS2b.mp4or it can be used with cheap secondary touchsscreen with the HDMI, though the touch aint supported on HDMI cable, so a mouse is prefered if you wanna manouvere scope settings on the extra screeen and you dont have the scope close by, but its all mouse optimised.
Also tried to run the secondary 15.6 screen, by powering it from the Micsig's scopes 5v USB port, but the Micsig 5V USB-A 2.0 port, got a problem in delivering high enough current to max out the brightness on the secondary screen, above 1A if I recall were problematic., so couldnt run the extra screens brightness higher then example below, otherwise the scopes USB_port would choke, I could ofcourse just use a powerbank to power the secondary screen, though more proof of concept if one wanted to run both HDMI vid signal and power from the scope.
Dont know if the newer Micsig scopes can supply 5V/1.5A power on their USB socket, or if their TypeC port support touch out, I doubt it... not many Android SoC does support it.
- with HDMI' it doesnt align to your secondary screens aspect ratio, it will only port your scopes screens aspect ratio like below.
The Micsig does have an internal Android screen casting feature, in its Android legacy OS, but I cant get it to connect to anything.. its an legacy heavily locked down Android ROM the scope is running, also dont allov for sideloading Android apk's.
But for the pricerange, it does give quite a few ablelities to cast your screen, either with HDMI, or with Micsigs wireless Windows/Android/iOS app and since the UI is so touch-optimised the update rate is good, its not that big a pain to control it from another device.