Review on 🖥️ High-Quality 3.5 Inch Raspberry Pi 4 Touch Screen with HDMI, TFT LCD Mini Display and Stylus Pen for Pi 4 B, 3 B+ by Angela Brooks

This could have been 4 stars but the fan on the unit is rubbish, the bearings started making a loud grinding noise after 1 day of use and when I took it out to check Due from noise the sticker on the fan fell off and I resorted to a small piece of Kapton tape to seal the exposed solder joints on the fan. This is the second LCD I've bought from Utronics, the first had no fan, button controlled rotation. For the record, my project is to use the Pi as an LCD touch device with a camera and a relay board that can be controlled from the touch screen to monitor the 3D printer. The relay board is used to turn the lights on and off and the 3D printer via GPIO and Python is used to interface the touch screen to turn them on and off with buttons. The camera is used to record time-lapse and remotely control a print job via VNC or RPi-Cam. PROS: With the Raspberry Pi, the case and LCD are a perfect match. Not sure about airflow and heat dissipation. The button on the device next to the micro USB adjusts the brightness of the LCD, not just on/off, which is a big plus for my application. Works out of the box on Raspberry Pi 3B+ and 4 I've tried. Once I have the calibration tool to run the touchscreen it works fine. CONS: The calibration instructions should be clearer, I was able to find the calibration on another LCD they sell. I had to modify the Pi to use VNC to remotely access the Pi and run a script from the terminal to get the xinput calibration to work. As mentioned above, the fan is a nice feature, and the included heatsink for the Pi gives clearance for the fan. but the fan itself is pretty much useless unless you don't mind the humming noise of the fan audible in a 15-foot room. Once the Pi is installed, the camera's GPIO and ribbon connector are nearly inaccessible with an attached LCD. Change my GPIO connections to control the relay board for my project to connect it. The cables from the GPIO pins had to be routed out the short side of the case as that is the only place where there is a hole without drilling holes in the case. The camera ribbon cable should cover the case fan. the bottom of the LCD and bend it at an extreme angle to fit it. The only option for the camera is to use a USB webcam.