I just bought one and thanks to David ‘s MCUFRIEND_kbv library it works like a charm including using the touch.
My only question is re the pin naming.
I have the usual Reset (A4), CS (A3), WR (A1), RD (A0) but there is one labelled RS. Is that the same as the DC/CD I see on similar displays? It goes to pin A2.
Yes, RS = DC = A0 and several other abbreviations all do the same job.
RS = Register Select
DC = Data/Command
A0 = Address select
I am impressed that they have named the controller and have a proper 3.3V regulator.
The next question is what is the part number printed on U2, U3 ?
Thanks David. Not sure what you mean by U2, U3. There is a SKU:UNO3501 part number on the packet if that helps.
Look at the pcb. There are chips marked as U2, U3. A regulator with 3 terminals and a thick tab. A resistor R1, RESET switch, microSD holder.
I realised that just after I posted😩
It looks like the numbers have been scrubbed off U2 and U3. The voltage regulator numbers are clear but not the others. I will have a look tomorrow with a better magnifier and light and report back.
No, I can't understand why anyone would scrub the number from a $0.10 buffer chip. But it looks nearer LVC245A than HC245A
Which is excellent news because LVC245A is input voltage tolerant and makes it work properly on a 5V Uno or Mega2560.
David.
I can confirm it’s LVC245A. I took a photo but it’s not as clear as what I can actually see.
Thanks again for you help.
I may be missing something simple here but —-
this ILI9488 TFT works great on my UNO but, when I plug it onto my Mega, using exactly the same pins as the UNO (2 to 9 and A0 to A4) it doesn’t work, except for the backlight.
Any help?
It should work on Uno, Leo, Mega2560, Zero, ....
i.e. any Arduino with proper Shield header sockets.
This means plugging it in as Nature intended.
Note that this assumes you are using a virgin installation.
If you have enabled USE_SPECIAL with any USE_xxx_MEGA_xxx compatible "special" it will use the special wiring.
If in doubt, re-install via the IDE Library Manager.
If you have installed from some random Internet, it is wise to delete the MCUFRIEND_kbv directory and "start again"
David.
Thanks David. Brain freeze. I forgot to swap utility and utilitybak directories. Utiliybak contained unmodified special and shield files and utility had the modified files for the 5” display.
All good now👍
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