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Is it safe to buy Tontec 7 Inches Raspberry Pi LCD Touch Screen Display TFT Monitor AT070TN90 with Touchscreen Kit HDMI VGA Input Driver Board on desertcart?

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In the previous article, I described the steps needed to install an LCD touchscreen on the Raspberry Pi. In this article, I will show you how to adjust the screen rotation of the LCD to landscape mode, and will show you how to calibrate the touchscreen pointer for optimal accuracy. Just follow the steps below to compete the process of setting up your Raspberry Pi LCD touchscreen:

1. First we need to change the setting for screen rotation in the /boot/cmdline.txt file. This setting is called fbtft_device.rotate=X. By default, this is set to X=0, which results in a portrait mode screen orientation. In order to switch the orientation to landscape mode, change fbtft_device.rotate=0 to fbtft_device.rotate=90. Enter sudo nano /boot/cmdline.txt at the command prompt. There should only be one line in this file. Go to the end of it and you will find the fbtft_device.rotate=X setting. Change the value from 0 to 90:

However, if you try to touch the screen now, you will find that the pointer movement does not correspond to your finger movement. This is because the LCD screen driver and the touchscreen controller driver have separate settings for screen rotation. We need to change the rotation of the touchscreen controller driver to match the rotation of the LCD screen driver.

2. You probably noticed that dragging your finger to the right moves the pointer up, not to the right. This indicates that the x and y axes of the touchscreen are swapped. To correct this, we need to swap the x axis for the y axis. This can be done by changing the swap_xy=X parameter in /etc/modules.

Enter sudo nano /etc/modules at the command prompt to edit the file. Go to the line for the ads7846_device parameters and move the cursor to the right to find it:

Now if you drag your finger around the screen, you will notice that the y axis (up and down) is correctly aligned with the motion of your finger. However, the x axis (left and right) is still inverted. To fix this, we need to install two more kernel modules, xinput and evtest. xinput is a Linux utility that will allow us to configure input device settings for the touchscreen controller, and evtest is an input device event monitor and query tool.

After the Pi finishes rebooting, you should notice that when you move your finger across the touch screen, the pointer should follow correctly in both axes. If you are using the Raspberry Pi 2 Model B, you will need to complete the calibration steps below before the pointer follows your finger correctly (and make sure that you have enabled startx to load automatically – see step 6 in this article).

You can rotate the screen 90 degrees (as we did in this tutorial) and the power connector will be at the bottom of the screen, but you can also rotate it 270 degrees so that the power connector is at the top of the screen. To do this, simply enter fbtft_device.rotate=270 in the /boot/cmdline.txt file. Then change the DISPLAY=:0 xinput --set-prop "ADS7846 Touchscreen" "Evdev Axis Inversion" 0 1 line in the /etc/X11/xinit/xinitrc file to DISPLAY=:0 xinput --set-prop "ADS7846 Touchscreen" "Evdev Axis Inversion" 1 0. All you need to do is switch the values of the 0 and 1 at the end of this line.

Now that we have our LCD touchscreen up and running, the final step in the installation is the calibration of touch control. This will make the pointer much more accurate and easier to use.

2. Now we need to install the calibration tool we will be using, xinput_calibrator; and other filters for controlling the touchscreen response. Install the tslib library by entering aptitude install libts-bin:

4. Now we can use ts_calibrate. Enter ts_calibrate at the command prompt (make sure you are still in root mode) to run the ts_calibrate program. The program will consecutively display five crosses on different parts of the screen, which you need to touch with as much precision as possible:

Drag the cross around the screen and observe how closely it follows your finger or stylus to test the accuracy of the calibration. Now press the “Draw” button to enter the drawing mode:

This is kind of a long process, but it is well worth it if you want to get the LCD touchscreen set up properly. So if you have any trouble setting this up or have anything to say, please leave a comment below. Also, if you found this article useful, please share it with your friends!

init = <0x10000b0 0x0 0x1000011 0x20000ff 0x100003a 0x55 0x1000036 0x28 0x10000c2 0x44 0x10000c5 0x0 0x0 0x0 0x0 0x10000e0 0xf 0x1f 0x1c 0xc 0xf 0x8 0x48 0x98 0x37 0xa 0x13 0x4 0x11 0xd 0x0 0x10000e1 0xf 0x32 0x2e 0xb 0xd 0x5 0x47 0x75 0x37 0x6 0x10 0x3 0x24 0x20 0x0 0x10000e2 0xf 0x32 0x2e 0xb 0xd 0x5 0x47 0x75 0x37 0x6 0x10 0x3 0x24 0x20 0x0 0x1000036 0x28 0x1000011 0x1000029>;

init = <0x10000b0 0x0 0x1000011 0x20000ff 0x100003a 0x55 0x1000036 0x28 0x10000c2 0x44 0x10000c5 0x0 0x0 0x0 0x0 0x10000e0 0xf 0x1f 0x1c 0xc 0xf 0x8 0x48 0x98 0x37 0xa 0x13 0x4 0x11 0xd 0x0 0x10000e1 0xf 0x32 0x2e 0xb 0xd 0x5 0x47 0x75 0x37 0x6 0x10 0x3 0x24 0x20 0x0 0x10000e2 0xf 0x32 0x2e 0xb 0xd 0x5 0x47 0x75 0x37 0x6 0x10 0x3 0x24 0x20 0x0 0x1000036 0x28 0x1000011 0x1000029>;

Kernel command line: bcm2708_fb.fbwidth=640 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 dwc_otg.lpm_enable=0 console=tty1 console=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait fbcon=map:10 fbcon=font:ProFont6x11 logo.nologo

[ 44.756917] fb_ili9486 spi0.0: fbtft_write_spi(len=15360): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ...

I intend to create a second case style to accommodate the daughter board on my own 7" panel for the switches and IR controller. Mine has the model PCB-800023 stamped on it and (compared to swehacker"s) a horrible design to accommodate with the...

I have printed an excellent Tontec 7 inch LCD Panel Assembly (http://www.thingiverse.com/thing:721186) and designed pushbutton caps and spacers for the button PCB so buttons are kept at necessary distance for the enclosure. Here is my complete make...

I have printed an excellent Tontec 7 inch LCD Panel Assembly (http://www.thingiverse.com/thing:721186) and designed pushbutton caps and spacers for the button PCB so buttons are kept at necessary distance for the enclosure. Here is my complete make...

LCD panel stand fitting 7-inch LCD panel. A lot of seller selling this type of LCD panel, without stand, bare package. (In Japan, aitendo.com ) Without stand, shortly flat cable or connecter will be easily broken by several tensions or movements.

This is just a modded top panel to fit a slightly different Chinese LCD, as well as some buttons that were missing from the original design, of which you will need 5. The Ribbon Cable fits really tightly with this, and I had trouble getting it to fit...

ER-TFTM070-5 is 7 inch lcd module w/capacitive touch screen panel,800x480,ra8875,i2c+parallel+spi serial,microsd card slot,font/flash chip for mcu,arduio.Souce from EastRising/buydisplay.com

This is a case for a 7 inch LCD screen, this one right here: https://www.amazon.ca/gp/product/B071X8H5FB/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 There are other cases out there but I wanted something that used less material and didn"t take...

1-7 inch keyboard https://ko.aliexpress.com/item/453497000.html 2-raspberry pi 4 3- LCD 7 inch raspberry pi 4-powerbank 20000 add solidwork files I make this case with split parts, because my printer is mini

7 inch LCD touch screen mount which holds a Raspberry pi in the base with a few small screws. If you are wanted to build the weather station, please see https://hackaday.io/project/6184/instructions. I followed these instructions and all kudos for...

The second model has had the lip removed so that you could use it on other types of lcd displays by using double-sided sticky tape from the back. This is the first 3d model I have uploaded onto Thingiverse.

Touchscreen: https://www.ebay.com/itm/7-inch-Capacitive-Touch-Screen-LCD-Display-IPS-1024x600-HDMI-For-Raspberry-H8J3/253840256795?epid=7022283046&hash=item3b1a0eef1b:g:qq8AAOSw4axbh9kK See enclosure for Raspberry Pi and Solid State relays:...

This is a stand alone display stand for a China flavor 7 inch LCD screen with HDMI input, found on ebay. This is a spin off of a Raspberry Pi Test Stand project.

This is a case for UCTRONICS 7 Inch IPS Touch Screen for Raspberry Pi 4, 1024×600 Capacitive HDMI LCD Touchscreen Monitor Portable Display for Raspberry Pi 4 B, 3 B+. It features a stand that folds up flat. ...I designed it with the idea of using the...

Version 0.1 This is the first version of a case for the LCD touchscreen 7 inch for the Raspberry PI. I currently do not have the resources to create this as yet.

This was designed to support a Raspberry Pi 7 inch LCD Touch screen Display with a Raspberry Pi 2. Both sides are identical and the support has a through hole for an allen key or screwdriver.

7 inch LCD "Mini Monitor" enclosure for generic module off Aliexpress Parts: OTS: 7 x M3 x 20mm pan head bolts 4 x M3 x 10mm pan head bolts 3 x M3 x 8mm pan head bolts 4 x M3 nuts 3 x M5 x 12mm bolts 5 x M5 nuts Printed: 8x pcb spacer 1x bezel 1x...

This is for the: Tontec® 7 Inches Raspberry Pi LCD Display Screen TFT Monitor AT070TN90 with HDMI VGA Input Driver Board Controller I looked at some other models and although all very elegant I am in the development phase and wanted something open...