Query regarding Touchscreen for RPi 3 running Debian Jessie

Well, you don't say which type of touch screen you are thinking of buying. I use the type which has an HDMI screen and a USB touch screen interface. I upgraded from RPi2 to RPi3 and there were few problems other than the usual config file tweaks.

I use the RPi in my products and that's the reason I use the HDMI/USB form as I am sure it will always work - even RPi4! Implementations that use the DSI port or SPI for the video will always have more of a dependency on the driver files being updated. The USB touch screen is also standard in Linux and only needs calibrating usually.

If this is a one-off project then most of the LCD touch screens available should work on RPi3 and will say so in the documentation. Certainly the official screen does work as I have colleagues that use it.

As most of my software is written in Python I use Kivy for the GUI. The nice thing about Kivy is I can develop my software on my main PC and it will run unaltered on the Rpi target. Yes, you can use Tkinter or QT, but Kivy is worth a look before you cut too much code.

Well, you don't say which type of touch screen you are thinking of buying. I use the type which has an HDMI screen and a USB touch screen interface. I upgraded from RPi2 to RPi3 and there were few problems other than the usual config file tweaks.

I use the RPi in my products and that's the reason I use the HDMI/USB form as I am sure it will always work - even RPi4! Implementations that use the DSI port or SPI for the video will always have more of a dependency on the driver files being updated. The USB touch screen is also standard in Linux and only needs calibrating usually.

If this is a one-off project then most of the LCD touch screens available should work on RPi3 and will say so in the documentation. Certainly the official screen does work as I have colleagues that use it.

As most of my software is written in Python I use Kivy for the GUI. The nice thing about Kivy is I can develop my software on my main PC and it will run unaltered on the Rpi target. Yes, you can use Tkinter or QT, but Kivy is worth a look before you cut too much code.

To DG. Nice post. You are spot-on w/ your comments concerning what are the Aim(s) of SW's project. Here, Form follows Function. A 2.5"er is more appropriate for him. DG (you) wrote>>...I use the HDMI/USB form as I am sure it will always work - even RPi4!...

USCDADNYC Reply>> Yes, HDMI is more Universal than the SW's 2.5"er. But HDMI is Not Touch Screen. I got the best of both worlds. W/ my SmartiPi Touch Enclosure, I used a Dremel Tool to cut-away Access to the HDMI Port. Then used a Right-Angle HDMI-HDMI-Adapter. BTW RPi4? Do you know something, we don't. BTW2 I have on-order a Pi-TopCREED. for my next project. A Prototyping enclosure for possibly (a) RaspPiZeroW, (b) UP board (not UP^2 board), (c) RPi4(?) if form factor is not bigger than RPi3B. This Pi-TopCREED has a HDMI/eDP-to 14" LCD Display inside it.At least I think so. I will know better when I receive shipment.

DG wrote>>...The USB touch screen is also standard in Linux...

USCDADNYC Reply>> What USB Touch Screen? the official RPi 7" touch screen (element14.com, Stock # 49Y17120)?

USCDADNYC (NY NY USA)

Since yesterday post here, I have looked at Kivy. Very nice and open source too. Thanks for mentioning it.

Aha! It was you how opened my Tomato Source.