Bonjour,
Nous sommes à la recherche d’un écran tactile TFT, SPI de 3.5 pouces compatible avec arduino nano ou mega, et nous utilisons déjà un esp32.
Pour une utilisation intéreireur.
Puis un autre avec une luminosité pour une utilisation extérieur en plein soleil avec ses même caractéristiques
Nous ajoutons un module mp3 donc pas obligatoire que l’écran soit muni d’un lecteur sd…
Merci
Hi laserfight,
Here’s a link to our 3.5" displays with touch capability and SPI interface. We have options for both 320x240 QVGA and 480x320 HVGA and both portrait (vertical) and landscape (horizontal) options for each.
Unfortunately, we do not list the luminance rating within our attribute filters, so one will need to look at individual datasheets for that information. I did see that the Newhaven NHD-3.5-320240FT-CSXP-T is specified as “Sunlight Readable” and gives some information about interfacing with Arduino products. They recommend using the NHD-FT81X-SHIELD for such applications.
Hello,
Thank you for your email. I have indeed checked the screens available on your site as well as online, but I am having difficulty making a choice.
Here is the link to the screen we used for our tests: [3.5" TFT Screen] [Blindage TFT à écran tactile 3,5 pouces pour Arduino UNO et Mega - OTRONIC] : (Blindage TFT à écran tactile 3,5 pouces pour Arduino UNO et Mega - OTRONIC).
Unfortunately, we are experiencing a problem with the SD card reader, which does not connect. We are therefore looking for an equivalent model, ideally within a maximum price of €35, that has similar characteristics or offers better visibility and color rendering.
It is crucial that the screen is compatible with our ESP32 and can be controlled via Arduino with a 3.5" TFT interface in SPI.
Furthermore, once we have found a suitable model for indoor use, we will also need a screen for outdoor use, ideally a transflective model or one with high brightness that we can adjust for use in direct sunlight. Therefore, we would need two distinct models: one for indoors and one for outdoors.
Could you recommend any models that meet these criteria?
Thank you in advance for your assistance.
Hello Laserfight,
I was unable to pull a datasheet from the listing you gave for the display device’s SPI protocol. In any case, the existence of the SPI protocol on David’s linked displays will allow your ESP32 to communicate with said display over the serial line. I would expect that your display driver would need to be used to match the new serial communications that a new display would have for you. Usually, the manufacturers grease the wheels on these by providing some boilerplate code but some labor to adapt to their libraries will be expected.
You will have to review displays on a case-by-case basis to obtain your desired spec on Luminance. See David’s link above.
Hi laserfight,
That price point is going to be hard to match. I did find one other part that you might consider, which is the Adafruit 2050, DigiKey part number 1528-1470-ND. It at least approaches your price point and it comes with the SD card slot, so that is similar. Unfortunately, I could find no information on its luminance specs, but it is NOT transflective, so that is a potential disadvantage.
As @Michael_Rudi pointed out, as it has an SPI interface, an ESP32 should be able to control it. One just needs to follow the example library code.
