ELEGOO UNO R3 2.8 Inches TFT Touch Screen with SD Card Socket w/All Technical Data in CD for Arduino UNO R3

I'm happy with this module, it comes with a micro-SD card reader, touch layer, and TFT Liquid Crystal Display all in one.I didn't expect much to work properly given this board is 4 times cheaper than the well known touchscreen display on the market.But I've been happily surprised. Everything works smoothly, and the touchscreen is accurate in reading points across the entire surface. (There is NO calibration issue as you control the offset in code yourself)The card - being a shield - means you can just line up the pins on the board to the mount holes on the Arduino, and the card pushes firmly into place.The mini CD that comes with the device (see below for a link) has all you need to get it running, the drivers, libraries, and example code.Once I'd placed the libraries into the Arduino system, I opened the 6 examples and they all ran without issue. It was great!The build quality is excellent - the surface mount chips are all soldered well, the display is mounted cleanly on the PCB. You even get a little plastic stylus for the capacitive touchscreen.Warning! You might need to power your Arduino board along with the USB power. I found my little laptop couldn't power the bright white screen LED's, RGB screen, and Arduino all at the same time. The Arduino would repeatedly "unplug", and then "replug".Once I'd supplied extra power through the Arduino jack plug, it stayed connected. No more brown-outs.I might just buy another one to build a permanent project.--------------------------------As you NEED to know what the electronic details are, I've included the CD contents on my site: Untamed Dot Co Dot UkThe link is right at the top, and includes the PDF's of the datasheets and libraries and examples.The missing manual. (At least on the product page)Key features:Driver chip : LGDP4535 (The CD also includes data sheet for the ILI9341)Level converter : 5v to 3.3vScreen resolution : 320 x 240Screen colour: RGB, 65,000 colour.Uses 8 bit parallel bus.Includes Micro SD card holder.Includes Arduino libraries and examples.

The screen is clear, bright, and works well. However, as with most of these units, the touchscreen is odd. Sometimes it works, others not. When it does work, it gives very odd results.

This is nice bright and clear display. And at a good price.Two things to be aware of though;it is supplied with documentation, examples and Library files on a CD ROM, which not all of us have kit to read these days. You can get hold of the files on-line, but it will be much easier if you can use the CD.The display has a parallel interface and when used with an Arduino UNO, uses almost all of the I/O pins, so if you want to also have other sensors connected, then you really need to use a Mega board.

I actually bought this screen to use with Arduino R4 WiFi, but it didn't work with this board, the Adafruit code calls for a library that doesn't exist in the latest IDE for the R4, I tried some work arounds other people had tried but it didn't work, Adafruit had been informed and they got the same faults when they tried it, not sure if they will update the files for the R4. However the screen does work well with the Uno R3, so I might see if there is another screen available that will work on the R4 or updated files to make it work. Recommended for Uno R3, good little screen.

Edited review: I decided to try another one of these screens since writing the first review and have changed my review from 3 to 5 stars as the unit I got was clearly a rogue defective unit! I contacted Elegoo and their customer service team were great so after looking around and not finding much else suitable for my project, I took a risk and tried the screen again. The new screen works as advertised and was bright and colourful! The touch screen feature clearly worked well this time and was everything I had originally hoped it would be. I haven't used the SD card as it doesn't suit my project, but if everything is as good as the rest I would be happy with it. Really blown away this time and glad I gave the screen a second chance! Both screens came well packaged and with lots of documentation and examples. Yeah, glad I tried this again!Original review:I was looking forward to receiving this item as I had plans for a project that would use it. When it arrived I was surprised to see that it was in "Shield" form, meaning that it fit directly into the pins of my UNO compatible.It was well packaged and came with a small stylus.Initially, the screen worked well and was bright and colourful. It worked well and does exactly what it is supposed to. My only gripe with the operation of the shield was the "touch" features of the touchscreen. In my case they were not very sensitive and trying to get something to happen via the supplied example sketches the screen cracked. Now this might have been me being a bit heavy-handed, but I don't think so... From the first day of trying this (a week ago) I've been somewhat suspicious that something was not quite connected correctly...Most of the arduino based products from Elegoo have been great... this one has been ok.