59 votes

Virtual keyboard activation

First thing to do: Open terminal Second you will need to update the repositories: sudo apt-get update An upgrade to the whole system isn't needed but it is recommended: sudo apt-get upgrade Now ...
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  • 873
32 votes
Accepted

Adjusting the Brightness of the Official Touchscreen Display

The driver for the screen provides an interface through /sys/. To turn the screen on you can use the command: echo 0 > /sys/class/backlight/rpi_backlight/bl_power and to turn it off: echo 1 > ...
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  • 11.8k
21 votes
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How to permanently hide mouse pointer or cursor on Raspberry PI?

I simply added a nocursor option as follows in the file (/etc/lightdm/lightdm.conf) xserver-command = X -nocursor and it worked as it should. No cursor is displayed whatsoever. You can still put your ...
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  • 1,032
11 votes

Adjusting the Brightness of the Official Touchscreen Display

I've made a Python package for this: github.com/linusg/rpi-backlight. Now you don't need to implement this yourself anymore. (GIF is outdated because API was changed quite a bit in v2, sorry... Below ...
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  • 432
9 votes
Accepted

Multiple Display Screens

The Raspberry Pi Foundation claims unambiguously that a VGA adapter on the GPIO header "means you can use it as a secondary monitor alongside HDMI" (from here). You should certainly be able to do ...
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  • 56.1k
7 votes
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calibrate touch screen (Raspberry PI 2 b+)

You need to store calibration data in /usr/share/X11/xorg.conf.d/99-calibration.conf which you got from xinput_calibrator. Here, follow these steps. Use xinput_calibrator utility. copy the output, ...
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  • 2,803
7 votes

Inverted GPIO Touchscreen (Using 99-calibration.conf)

Download First, download the file from this link waveshare-dtoverlays Instalation My touchscreen is Waveshare 3.5" LCD. I copied "waveshare35a-overlay.dtb" to "/boot/overlays" ...
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6 votes

Touchscreen w/ HDMI output only when a display is attached?

You need to do two things : 1 Setup your xorg.conf with two layouts , HDMIOnly and TFTOnly. Use this as inspiration : https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=91764&start=25#...
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  • 6,065
6 votes
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New Touchscreen Project - GPIO or HDMI

The safest touchscreen would be one that is built for the pi and has in-tree kernel drivers so you do not get stuck having to use a manufacturer's OS image that is likely to fall (or already be) out ...
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  • 56.1k
6 votes
Accepted

3.5 Kuman touchscreen rotation

Assuming you have one of these (different size is fine too), they are compatible with/same as the waveshare products available here. Using LCD-show drivers and scripts I have posted the setup ...
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6 votes

Rpi3B/Rpi4B ILI9341 / XPT2046 SPI 2.8" Touch TFT LCD Connection / Driver Problem

Question ILI9341 SPI 2.8" Touch TFT LCD Arduino Shield Rpi3B+ OK? How to connect? Short Answer (S1) Yes, it is OK to use the ILI9341 Arduino Shield for Rpi. The following is the wiring ...
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  • 4,314
5 votes

New Touchscreen Project - GPIO or HDMI

In my opinion, one of the biggest advantages of using HDMI or DVI out is compatibility. Screens sold for the RPi that use a GPIO connector usually ship with a special image, and you're stuck using ...
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  • 11.8k
5 votes

TFT LCD 3.5 display with inverted axis

Option "TransformationMatrix" "0 -1 1 1 0 0 0 0 1" worked for me too! after 2 afternoons of work it finally worked out Im using the 3.5 TFT GPIO verison - ADS7846 Touchscreen here is my file pi@...
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5 votes

How to make onscreen keyboard automatically pop up when entering input field

Florence virtual keyboard claims to have this feature (called "auto-hide mode"), which should work with modern applications implementing accessibility API (e.g. GTK+ and Qt 5): For a system-wide ...
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5 votes

Using the DSI connector on RasPi Zero W

The Pi Zero W only has CSI for connecting to a camera module, but it hasn't a separate DSI for connecting a display. The DSI connector is only present on the A/Bs (and CM, if I'm not mistaken). The ...
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  • 1,541
5 votes

Is it possible to power a 3b+ and the display with the poe hat?

I had the exact problem as you. Found it was not possible due to the form factor of the Pi 3B+ when a PoE Hat affixed to it to fit in the "Smarti Pi Touch" case. Used a PoE Splitter (£9.90 in VAT ...
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  • 1,569
4 votes
Accepted

How to make 3.5" Resistive Touch Screen Usable

I have recently bought a 4 inch version of these screens and the image is supposed to replace the operating system with one that has a kernel supporting the use of the screen and being already set up. ...
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4 votes

How can I develop a touchscreen GUI in Python?

You can try Kivy, this gives you a python multi-touch interface but has a lot of other stuff as well... https://kivy.org/
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  • 431
4 votes

New Touchscreen Project - GPIO or HDMI

The Raspberry Pi Foundation sells a 7" touchscreen that connects to the Pi's on board DSI port over a ribbon cable, and connects to the Pi's GPIO pins for power. I would go with this one, as it is ...
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  • 141
4 votes

How to permanently hide mouse pointer or cursor on Raspberry PI?

To work with any X server (I'm using the stretch version), Edit the /usr/bin/startx file and change the defaultserverargs line to: defaultserverargs="-nocursor"
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4 votes
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How can I install the KUMAN 3.5 inch-display?

Here are the drivers and the description of how to install the screen given by Kumantech. I got it working, and touch screen functionality also worked. I actually did this with combination with other ...
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4 votes

How can I install the KUMAN 3.5 inch-display?

Download the driver from here. Add to /boot/config.txt file the following lines: max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 Uncompress, move inside theLCD-show folder ...
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  • 379
4 votes

Raspberry Pi Camera Not Showing Preview Onto Touch Screen

I don't think this works as intended. At least, the docs for the Python picamera library state that: The camera’s preview system directly overlays the Pi’s output on the HDMI or composite video ...
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  • 10.6k
4 votes
Accepted

Using RPi touchscreen as primary display, how to display image on HDMI?

Summary: Finally, my solution used the Kivy framework. Kivy is a graphical framework for Python and, critically for my app, has the ability to output to both the RPi's LCD touchscreen and HDMI. Kivy ...
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  • 91
4 votes

Kuman 7 inch LCD touchscreen compatible with Raspberry Pi Zero?

It's working with my zero. However you will need to adjust the settings to use the entire screen, just researching that now. The Kuman screen (which should come with the proper cable) is: Kuman ...
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  • 41
4 votes

Pi Official Touchscreen Dim on Timeout (Screensaver like)

With the assistance from this Forum, specifically Dougie I have a solution to my original question and this allows the Raspberry Pi Touchscreen to be dimmed (or completely off) gradually after a ...
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4 votes
Accepted

Raspberry Pi 4 touchscreen misbehaving when using a secondary monitor

The answer lies in this document: ELI Touch Screen Calibration in Linux First of all, we need to check the name of the display with the following command: xrandr For me, it was DSI-1. Then we need to ...
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  • 91
3 votes
Accepted

Touch Screen Window Size Adjuster

Press and hold left alt key, then you can click and drag windows around from anywhere (as opposed to having to click and hold top bar to move windows) Now... I see a lot of folks on a fresh install ...
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  • 46
3 votes
Accepted

Touchscreen Pi GPIO Connection

The 3V3 rail is only brought out on pins 1 and 17. Your only choices appear to be an external 3V3 power supply (but then you'd have the same problem connecting the grounds) to carefully splice one ...
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  • 67.4k

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