Joy-it RB-TFT1.8 User manual

1.8“ TFT-Display
3

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 2
1. Introducon
2. Usage with an Arduino
2.1 Connecng the display
2.2 Installing the library
2.3 Example-Code
3. Usage with a Raspberry Pi
3.1 Connecng the display
3.2 Installing the soware
3.3 Installing the module
3.4 Displaying an image
3.5 Playing a video
4. Informaon and take-back obligaons
5. Support
TABLE OF CONTENTS

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 3
Dear customer,
Thank you very much for choosing our product.
In the following we will show you what has to be observed during commissioning and use.
Should you encounter any unexpected problems during use, please feel free to contact us.
2.1 CONNECTING THE DISPLAY
Connect the display to the pins of your Arduino as shown in the following gure and table.
1. INTRODUCTION
2. USAGE WITH AN ARDUINO

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 4
2.2 INSTALLING THE LIBRARY
Before you transfer the source code in chapter 2.3 to your Arduino, you must rst add the TFT library. As
shown in Figure 2, click on Sketch → Include library → Manage libraries.
TFT PIN Arduino PIN
VCC 5V
GND GND
SCL 13
SDA 11
RS/DC 9
RES 8
CS 10

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 5
In the library manager that opens, search for the library of the same name under the search term TFT and
install it.
You can now select an example code under File → Examples → TFT and try it out, or connue with step 3.

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 6
2.3 EXAMPLE-CODE
Below you can nd a code example with which you can display any text on the display. Please copy the
enre code to your Arduino.
#include <TFT.h>
#include <SPI.h>
//PIN-Einstellungen
#define cs 10
#define dc 9
#define rst 8
TFT TFTscreen = TFT(cs, dc, rst);
void setup() {
TFTscreen.begin();
//Hintergrund: Schwarz
TFTscreen.background(0, 0, 0);
//Textfarbe: Weiß
TFTscreen.stroke(255, 255, 255);
}
void loop() {
//Schriftgröße einstellen
TFTscreen.setTextSize(3);
//Text ausgeben
TFTscreen.text("joy-IT", 0, 0);
//Schriftgröße einstellen
TFTscreen.setTextSize(2);
//Text ausgeben
TFTscreen.text("1.8 TFT LCD", 0, 40);
//Schriftgröße einstellen
TFTscreen.setTextSize(1);
//Text ausgeben
TFTscreen.text("ST7735", 0, 60);
delay(250);
}

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 7
3.1 CONNECTING THE DISPLAY
Connect the display to the pins of your Raspberry Pis as shown in the following gure and table.
3. USAGE WITH A RASPBERRY PI
TFT PIN Raspberry Pi PIN
VCC PIN 1 (+3.3V)
GND PIN 6 (GND)
SCL PIN 23 (SCLK)
SDA PIN 19 (MOSI)
RS/DC PIN 18
RES PIN 22
CS PIN 24

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 8
3.2 INSTALLING THE SOFTWARE
If you are already using a current Raspbian system on your Raspberry, you can skip this step and proceed
to step 2.3 immediately.
Install the current Raspbian Image on your SD card using the "Win32 Disk Imager" program, which you
can download from the following link.
Once the installaon is complete, you can remove the SD card, insert it into your Raspberry Pi and start it.
3.3 INSTALLING THE MODULE
First you have to modify the cong.txt le.
Open a terminal window and open the le with the following command:
Add the following line to the end of the le.
You can save your input with the key combinaon CTRL+X and exit the editor with CTRL+O.
sudo nano /boot/config.txt
dtparam=spi=on

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 9
The le cmdline.txt must also be adapted:
Add the following command to the end of the exisng rst line:
Next, the 99-turbo.conf le must be modied:
Change the following line...
sodass sie 0 in 1 ändern. Die Zeile sollte dann wie folgt aussehen:
so that you change 0 to 1. The line should look like this:
Add the following two lines to the le:
Another le must now be created:
Insert the following content:
The value rotate=90 allows in our case the rotaon of the display by 90°.
You can choose between 0, 90, 180 and 270, which corresponds to the respecve degrees.
Now restart your Raspberry Pi with the following command
sudo nano /boot/cmdline.txt
fbcon=map:10
sudo nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf
Option "fbdev" "/dev/fb0"
Option "fbdev" "/dev/fb1"
sudo nano /etc/modules-load.d/fbtft.conf
spi-bcm2835
fbtft_device
sudo nano /etc/modprobe.d/fbtft.conf
options fbtft_device name=sainsmart18 rotate=90
sudo reboot

1.8“ TFT Display
Published: 08.11.2018 Copyright by Joy-IT 10
3.4 DISPLAYING AN IMAGE
In order to display an image on the display, a compable image viewer must rst be installed. You can
install it with the following command:
You can use the following command to download a suitable example image:
The downloaded image can now be displayed with the previously installed image viewer.
3.5 PLAYING A VIDEO
In order to relieve the processor as much as possible during the playback of a movie, it is recommended
to mirror the graphic output (framebuer) by the program cp, so that it can be calculated by the
graphics card unit. Therefore, the program has to be installed rst.
The mirroring can be started with the following command:
You can use the following command to download a suitable example video:
apt-get -y install fbi
wget https://dummyimage.com/100.jpg
sudo fbi -d /dev/fb1 -T 1 -noverbose -a 100.jpg
sudo apt-get install cmake
git clone https://github.com/tasanakorn/rpi-fbcp
cd rpi-fbcp/
mkdir build
cd build/
cmake ..
make
sudo install fbcp /usr/local/bin/fbcp
fbcp &
wget https://archive.org/download/Test_Avi/MVI_0043.avi