Miuzei Raspberry Pi 4 Touchscreen with Case Fan, 4 inch IPS Touch Screen LCD Display, 800x480 HDMI Monitor for RPI 4b 8gb/4gb/2gb with Touch Pen (Support Raspbian/Kali/Octopi/Ubuntu)- No Raspberry Pi

Most microcontrollers are used in a headless configuration, meaning once the initial configuration is done, there is little need for visual monitoring or feedback. However there are times when you need that monitor such as a network monitor, remote access (when there isn’t a wifi or computer to connect to), or portable applications (gaming, car ODB2, robots, etc.) This is when a small touch screen would come in handy.Hence the 4” Miuzei touch screen kit. It comes with a 800x400 touch screen, pen, HDMI “jumper”, four head sinks, 3 black acrylic pieces for a supporting case and mounting hardware. Assembly was very easy. The screen sits on the Ethernet/USB 3 ports and one of the acrylic pieces. A small HDMI jumper connects the HDMI full size port to the first HDMI mini on the Pi4. There is a small button that is used to control the backlight.I wanted to see how fresh install would be so using the website provided on the instruction card, so I downloaded the new Raspbian Buster with the touch screen driver already installed. After booting up the screen came up and I was able to use the pen on the screen. No issues what so ever. A few clicks later after configuring for WiFi, time zone, and keyboard, it was fully up and running. I would suggest that if you have something already up and running that you back up the image first before trying to install the driver. The screen is bright and viewable from almost all angles. You may have to run a pen calibration program depending far off the pen is from the contact of the screen.It should be noted that the screen can be used with any other device with an HDMI output. You will need an HDMI cable and a 5 volt USB power supplier to power the screen. Also the connector used for the touch screen uses 26 of the 40 GPIO pins.Being of the mind set of wanting to improve things, I can see three things that would be of benefit: 1) Adding a fan for cooling of the heat sinks and better air flow. 2) Access to the connector’s GPIO (if they aren’t used.) 3) A right angle header to have access to the other pins, including the 3.3 and 5.0 volt pins.This is a great kit. I like this a lot. It’s going to be used quite a bit. This really makes me want to build make a RetroPi game console, among other things.

Pictures are pi5 8gbI have bought similar minimalist touchscreen kits and by far this is the best you will get when it comes to overall quality. Not just the precision of the cut acrylic, but the hardware that they chose to include, the screen is very good despite what you read saying otherwise (it's 4 inches wide and $30, don't expect 4k resolution) but you will be able to read and do what ever is required with this screen.Another plus is it's a great case for passive cooling.Aesthetically, this thing looks so awesome with the transparent plastic/circuitry combo that I crave from my childhood inspired by Nintendo consoles and handhelds alike.The only negatives I have are that I can't turn the display off completely.Touch is inverted with the way I have it standing in my pictures which is how it will stay. (Which might be fixable but I'm just not smart enough to do that yet).If this is the kind of kit your looking for, buy this one.

I bought this more for the screen itself, not really concerned about the touch part, which I just thought was a nice bonus. The case was also a nice boon as well, which really helps to drive the value of this purchase.Going over the quality of everything, the case isn't bad. It's nothing fancy, but for what it is it's built well and everything fit together nicely. I had no trouble putting it all together, and its design happens to make it more convenient for me. This will certainly not protect the pi from dust or really anything else; It's really just there to support the screen. Speaking of which, the screen is also built quite nicely. It's a fairly good screen but unlike my IPS monitors, the backlight tends to reduce quality significantly when not viewed straight-on. This was somewhat disappointing but not entirely surprising. It's not exactly practical to view the screen from 178 degrees but one reason I was attracted to this was because I wanted to be able to place this on a table and have no discoloration when viewed from a reasonable angle. For the most part, it's fine, just not quite as good as I was hoping. Worth noting, it comes with some heatsinks and a fan. I wanted to keep the ones I had before but because they were so high-profile, they would get in the way of the included fan. I didn't exactly feel comfortable omitting the fan, so I installed everything using the kit. So far it has not been an issue.Depending on what you want to do with this screen, setup can be really simple or painful. If you set it up per their recommendations, I'm sure it all works fairly well, provided you are expecting to use this on a Raspberry Pi with the desktop enabled. I tried it briefly and it works alright but, to be honest, I am not sure why I would want to use a Raspberry Pi, even a 4, for the desktop experience. It's impressive for the price and the size, but your smart phone, tablet, laptop or desktop computer will offer a far better experience than what this can offer. What I expected was that this little screen would basically be a tiny TV with a small resolution, but this isn't exactly the case. The reason for this is that this screen is not 16:9, it's 9:16. To clarify, this is just a little monitor with a HDMI input and a 3.5mm jack output, so I expected that with power supplied it would function just like any display would. My PC, however, did not recognize it at all, and the Pi is confused by it as well. You need to add in specific display settings into the Pi's configuration file in order for it to work. Once it does, any apps designed for a landscape screen will not work well as this is in portrait. Surprisingly, the Raspberry Pi does not have a great workaround for this. If you intend to use Retropie, the drivers that allow the touch screen to allow touch, and to rotate, will not work. There are some workarounds for this and I suggest researching into how to set up Retropie as a vertical cabinet. Fortunately, the Retropie default interface works alright in portrait and games can be specifically rotated. Because the case's design, you can also set it easily in portrait or landscape positions on its side. This was probably not the intent behind their design but it works nonetheless.Last thing worth mentioning, you might wonder why you would want to use the 3.5mm jack on the screen instead of the one already available on the Pi4. I tried both and the one on the screen is significantly boosted. It does, however, seem to introduce a clicking sound into the audio sometimes. It's noticeable and not really worth the added volume. I suspect this is a decent feature if you intend to plug this into something other than the Pi4 but otherwise it's just another option for audio you can choose to use or not. With some work, it might be possible to eliminate the audio issue.Overall, if you can accept the drawbacks, this is a really nice option that I would recommend. It might take a bit of work to get it to work right if you don't want to use it exactly as they suggest, but the results are well worth it if you're willing to put some work in.