I bought this projector to take to music festivals and raves to quickly project animated gifs on the ground (like a flashlight, but with animations) but it seems it is not really useable for that.This is a great little projector and is surprisingly capable for its size, but has 2 problems:The power cord is a DC barrel connector and requires a wall outlet to charge, which makes it useless at raves. The power input is 5V 3A, why they didn’t just use a USB C connector so it can be used with any standard power bank is just mind-boggling.There is no way to turn off just the lamp off to save power. You need to power down the whole unit, and booting back up takes about 90 seconds. It has a lens cover you can close to block the projection, but it does not shut the lamp off. This results in a lot of unneeded power drain and wastes lamp life.This makes this unit impractical for what I was trying to do with it. Without the ability to shut the lamp off, it will only last about an hour and a half and once it’s dead if you don’t have a wall outlet, you will not be charging it back up.It provides ADB root shell out of the box and I have tried several different ways to turn the lamp off, but so far ̶n̶o̶n̶e̶ ̶w̶e̶r̶e̶ ̶s̶u̶c̶c̶e̶s̶s̶f̶u̶l̶ (SEE EDIT BELOW). There also does not appear to be any firmware publicly available, so if you brick it messing around with root, you will be unable to restore it.EDIT: I have purchased a 5V DC barrel to USB, which I didn't even know was possible. Now I can plug the projector into my power bank and car to charge. While still inconvenient to have to carry this special wire around with it, it does significantly help with the "portability" factor, therefore I have changed my review to 4 stars. I purchasedthis universal cable here and it works great.EDIT 2 (11-19-23): I finally DID find a way to turn off power to the lamp. From an ADB shell, run the following command: "./system/bin/tusmv53_cmd 11 0 0 0" The lamp should turn off. Run it again and it will turn back on, but the image will be inverted. Run the command "./system/bin/tusmv53_cmd 4 0 0 0" afterwards to correct this. I created a script that runs at boot to override the POWER button press event and instead run this set of commands. Now, pressing the power button will toggle ONLY the lamp on and off, but the projector stays powered up. It also significantly reduces the power draw when not projecting, which should extend battery life.Now that I can quickly power the projection on and off like a flashlight, I would give this unit 5 stars. However, since it is not a native function and requires rooting and modifying boot files (which will easily brick the device if you mess up), I am leaving my review at 4.EDIT 3 (7-8-24): This unit has been a big hit at the raves and the dancing Mr. Krabs never fails to constantly draw a crowd, but after 15 months the battery has swelled up and can no longer hold a charge. It also bent the logic board and the power button no longer turns on the device. I will have to look into obtaining a replacement battery to install :(EDIT 3 (11-19-24): Could not find a replacement battery that would fit but got another one of these units on a 40% sale. Was a big hit at this years EDC Orlando rave! I was also able to contact the company that makes the built-in EShare app and they were kind enough to add animated .gif file playback instead of having to convert them to 5 minute long .mp4s first, which makes adding animations much easier.Luckly the system apps are signed with the default Rockchip Android platform key, so overwriting the built-in app was simple. Hurray for horrible security practices I guess lol.