2.8" tft cap. touch versions problems Moderators: adafruit_support_bill, adafruit

[Jonaczt]

HI,

My company recently purchased new stock of adafru.com/product/1947. However, when we attached the new ones to the MKR ZERO board and it didn't do anything other than turn on the backlight. When I use the Arduino UNO the projects run normally. So, I took a look and found that IOREF must be shorted with 3V pin. Nevertheless, it still no working.

When I used the version v. 2.3 the display worked!!! Additionally, I can not find a version number on the new display board.

I was wondering if this would be a hardware or software issue?

Thanks

[mikeysklar]

Hello Jonaczt,

We have had quite a few posts recently on this topic. Please let me know if this solution also works for you. I do not know where the version number of the board is located.

viewtopic.php?f=47&t=148262&p=771877&hilit=2.8+tft+mkr#p771877

This version (Adafru~1) has the 2X3 header as a default to use SCK, MOSI and MISO pins, while the older version (v2.3) had those pins already connected to the peripheral single row pins.

Therefore, for the latest version I did this: (refer schematic ADAFRU~1 2019-09-17 10:57AM):

Connected the pin closest to the pin 3 of MIC5225-3.3, to 3.3V (since I am using MKR Zero)
Left the pin IOREF/VCCIO open
Left the adjacent 3V pin open
Soldered together all three positions of IOREF
Closed SJ1, Closed SJ2, Closed SJ3

[mh6562086]

I am involved in a machine learning project in healthcare and have already written several articles https://innovecs.com/industries/healthcare/. Is it possible to use touch screens to receive data online?

[jim_lee]

That's like asking if its possible to fly some aluminum, because its light. Sure, but you have to build an airplane out of it first. The touch screen is just one part of a system. Can you build a data retrieval system using it? Possibly as part of it. But a pretty small part of the project.

-jim lee