JOY-iT RB-TFT1.8 1.8 Inch Display Module User Manual
- June 9, 2024
- JOY-It
Table of Contents
JOY-iT RB-TFT1.8 1.8 Inch Display Module
1,8 ” TFT-DISPLAY
RB-TFT1.8
GENERAL INFORMATION
Dear customer,
thank you for choosing our product. In the following, we will show you how to
use this device.
Should you encounter any unexpected problems during use, please do not
hesitate to contact us.
USAGE WITH RASPBERRY PI
Connection
On the back of the display is an SD card slot, which can be accessed with the other pins.
Installation
We use with the Raspberry Pi the library Adafruit_CircuitPython _RGB_Display
from Adafruit, which was published under the MIT-License.
First, install pip so that you can perform all installations without any
problems. To do this, run the following command in your console.
sudo apt-get install python3-pip
Now enable SPI on your Raspberry Pi. To do this, execute the following command.
sudo raspi-config
Now go
to 1 Interface Options → P4 SPI. 
Answer the question Would you like the
SPI interface to be enabled? with 
Now
install the library using the following commands.
sudo pip3 install adafruit-circuitpython-rgb-display
sudo apt-get install fonts-dejavu
sudo apt-get install python3-pil
Code example
We provide you with a sample code which allows you to show an image on the display. To do this, first download the following file.
wget https://www.joy-it.net/files/files/Produkte/RB-TFT1.8/RB- TFT1.8_Codeexample_RaspberryPi.zip
You unpack them with the following command. Make sure that you are in the correct file path.
unzip RB-TFT1.8_Codeexample_RaspberryPi.zip
You can now use the following commands to execute this code.
cd RB-TFT1.8_Codeexample_RaspberryPi
python3 RB-TFT1.8.py
Your display should now show you an image.
If your displayed image is shifted in the display (a pixel line can be seen),
you can adjust the software in line 41 by means of the x_offset and y_offset,
so that the image is correctly displayed to you.
USAGE WITH ARDUINO
The screen has a logic level of 3.3 V, which means that a voltage converter is required for the use with the Arduino. Using it without a voltage converter can cause damage to the TFT. In our example codes we use two COM-KY051VT.
Connection
Usage without SD card slot
| Arduino | COM-KY051VT 1 | COM-KY051VT 2 | TFT |
|---|---|---|---|
| 3,3 V | VCCa | VCCa | VCC |
| 5 V | VCCb | VCCb | – |
| GND | GND | GND | GND |
| Pin 13 | B1 | – | – |
| – | A1 | – | SCL |
| Pin 11 | B2 | – | – |
| – | A2 | – | SDA |
| Pin 8 | B3 | – | – |
| – | A3 | – | RS/DC |
| Pin 9 | B4 | – | – |
| – | A4 | – | RES |
| Pin 10 | – | B1 | – |
| – | – | A1 | CS |
| – | – | – | MISO |
| – | – | – | SCLK |
| – | – | – | MOSI |
| – | – | – | CS |
Usage with SD card slot 
| Arduino | COM-KY051VT 1 | COM-KY051VT 2 | TFT |
|---|---|---|---|
| 3,3 V | VCCa | VCCa | VCC |
| 5 V | VCCb | VCCb | – |
| GND | GND | GND | GND |
| Pin 13 | B1 | – | – |
| – | A1 | – | SCL |
| Pin 11 | B2 | – | – |
| – | A2 | – | SDA |
| Pin 8 | B3 | – | – |
| – | A3 | – | RS/DC |
| Pin 9 | B4 | – | – |
| – | A4 | – | RES |
| Pin 10 | – | B1 | – |
| – | – | A1 | CS |
| Pin 12 | – | B2 | – |
| – | – | A2 | MISO |
| – | A1 | – | SCLK |
| – | A2 | – | MOSI |
| Pin 4 | – | B3 | – |
| – | – | A3 | CS |
Code example
Code example without SD card
For the code example we use the library Adafruit-ST7735-Library from Adafruit,
which is published under the MIT-Lizenz. You can find and install it in your
Arduino IDE under Sketch → Include
Library → Manage Libraries.
Now ,select a sample code from File → Examples → Adafruit ST7735 and ST7789
Library. In our case graphictest.
There, comment line 87 or line 89 (tft.initR (INITR_BLACKTAB);) with // and
uncomment line 90 or line 92 (tft.initR (INITR_GREENTAB);) by removing // at
the beginning of the line. However, before you press the Upload button, make
sure that you have set the Board and Port correctly under Tools.
Code example with SD card
For this code example, an SD card is used, which can be inserted on the back
of the display.
For
the code example we use the library Adafruit_ImageReader from Adafruit, which
is published under the BSD-Lizenz. You can find and install it in your Arduino
IDE under Sketch → Include
Library → Manage Libraries. Make sure that you also install all dependencies.
Now download an image here , which you have to save on the SD card for the
display. Now insert the SD card into the SD card slot. Now download our
provided sketch here.
However, before you press the Upload button, make sure that you have set the
Board and Port correctly under Tools.
USAGE WITH MICRO:BIT
Connection
Code example
For the micro:bit we use MakeCode, which you can open in your browser here. For the micro:bit we provide the library RB-TFT1.8, which is publis-hed under the MIT-License. In MakeCode you can load the blocks into y-our project under Advanced → Extensions. There you can search for RB-TFT1.8 and select it.
We
provide you with a sample code, which you can download here . You load the
code on the micro:bit by saving the file on the micro:bit.
OTHER INFORMATION
Our information and take-back obligations according to the Electrical and Electronic Equipment Act (ElektroG)
Symbol on electrical and electronic equipment:
This crossed-out dustbin means that electrical and electronic appliances do
not belong in the household waste. You must return the old applianc-es to a
collection point.
Before handing over waste batteries and accumulators that are not en-closed by
waste equipment must be separated from it.
Return options:
As an end user, you can return your old device (which essentially fulfils the
same function as the new device purchased from us) free of charge for disposal
when you purchase a new device.
Small appliances with no external dimensions greater than 25 cm can be
disposed of in normal household quantities independently of the pur-chase of a
new appliance.
Possibility of return at our company location during opening hours: Simac
GmbH, Pascalstr. 8, D-47506 Neukirchen-Vluyn, Germany
Possibility of return in your area:
We will send you a parcel stamp with which you can return the device to us
free of charge. Please contact us by e-mail at Service@joy-
it.net or by telephone.
Information on packaging:
If you do not have suitable packaging material or do not wish to use your own,
please contact us and we will send you suitable packaging.
SUPPORT
If there are still any issues pending or problems arising after your purcha-
se, we will support you by e-mail, telephone and with our ticket support
system.
E-Mail: service@joy-it.net
Ticket system: http://support.joy-it.net
Telephone: +49 (0)2845 98469-66 (10-17 o‘clock)
For further information please visit our website:
www.joy-it.net
Published: 06.01.2023
References
- ITnet | Servizi di Colocation e Cloud
- Joy-IT Helpdesk
- For Makers and Professionals | Joy-IT
- Adafruit Industries · GitHub
- Adafruit Industries · GitHub
- GitHub - adafruit/Adafruit_CircuitPython_RGB_Display: Drivers for RGB displays for Adafruit CircuitPython.
- Adafruit_CircuitPython_RGB_Display/LICENSE at main · adafruit/Adafruit_CircuitPython_RGB_Display · GitHub
- GitHub - adafruit/Adafruit_ImageReader: Companion Arduino library for Adafruit_GFX to load images from SD card
- GitHub - adafruit/Adafruit-ST7735-Library: This is a library for the Adafruit 1.8" SPI display http://www.adafruit.com/products/358 and http://www.adafruit.com/products/618
- Adafruit-ST7735-Library/README.txt at master · adafruit/Adafruit-ST7735-Library · GitHub
- GitHub - joy-it/pxt-RB-TFT1.8: MakeCode Package for the RB-TFT1.8 (ST7735 1.8" TFT Display).
- SEN-MPU6050/LICENSE.md at main · joy-it/SEN-MPU6050 · GitHub
- Microsoft MakeCode for micro:bit
- The 3-Clause BSD License – Open Source Initiative
- joy-it.net/files/files/Produkte/RB-TFT1.8/joyit-fox.bmp
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