Coowell Waveshare 4inch Arduino Display Module Resistive Touch Screen TFT LCD Shield 480x320 SPI Interface Compatible with Arduino UNO/Leonardo/UNO Plus STM32 NUCLEO/XNUCLEO

Warning: Drawing to this display is extremely slow. Text paints like 1200 baud dialup from 1985. Also the example code has 1.5 seconds of delays just to toggle the reset pin at startup.Maybe that’s not a deal breaker for your project.Reviewing the example code, it looks like fonts are drawn one pixel at a time, and each pixel requires a unique SPI transaction.It’s extremely likely this thing could perform better with proper documentation and examples. I’d update my review and add stars if I’m shown I failed to find them somewhere obvious.

Since they added their own serial to parallel circuit, it now requires a GPIO change before each command and before sending data. When used with an FDTI FT232H doing SPI over USB this cause a 2ms "speed bump" for each operation, for example, setting one pixels. Two milliseconds to set one pixel makes this display incompatible with SPI over USB. They only need to have some jumpers to let me set it back to it's native SPI interface, but they did not! So in the trash this display will go!

Se configura bien. Funciona perfectamente

di qualità professionale e con una ottima definizione... consuma un poco troppo... circa 600mA

With datasheet and example code in hand you can get to grips with this display. For Arduino Uno you need to pare down the code a bit in order to get anything else operating in software. But overall, good. Only drops a star as I have had some trouble with the SD2Card initialising properly, seems very prone to noise.

L'affichage est de bonne qualité contrairement à un autre écran concurrent testé précédemment.Le fabriquant met à disposition sur son site des codes exemples, notices et 3D!Le top pour du développement.Je l'ai testé sur un Arduino Leonardo.

Too slow to paint on screen what you want to achieve.Just way too slow.The supplied demo code for Arduinio boards works exactly as it should (that's a plus right?) but this screen is so slow to complete anything you might want it to do that I would avoid it.I can not recommend this screen under any circumstances. I wish I'd found my review before buying one.I'm currently looking at Nextion screens which seem better.I had to give 1 star here as it does work - but CR4P, useless and going in the bin (sorry to ELEGOO).