1.38″ DIABLO16 Round Display Module Pack for the Raspberry Pi A, B and B+
This 4D Systems Display Module Pack for the Arduino (and variants) is made up of a uLCD-220RD 1.38″ Round TFT LCD Display Module and a 4D Serial Pi Adaptor and 5 way interface cable, for quick and easy connection to a Raspberry Pi.
This Display Module Pack enables an Arduino user to quickly connect the 4D Serial Pi Adaptor to their Raspberry Pi, connect the 5 way cable between the Adaptor and the Display Module, and be connected in seconds to start programming their new 4D Systems Display.
The uLCD-220RD can be configured in a number of ways using the 4D Systems Workshop4 IDE. There are 4 programming Environments to choose from, to enable the widest range of options possible and to suit a wide range of Users and projects alike.
The uLCD-220RD-PI has a comprehensive ViSi-Genie library written to communicate with the Raspberry Pi, allowing the Visi-Genie events to be easily understood by the Raspberry Pi and users code.
Utilises the Raspberry Pi’s UART Serial Port.
For a detailed listing of the capabilities of the display module in this Raspberry Pi Pack, please refer to the datasheet for the display itself, available from the Product Page of the uLCD-220RD.
** NOT RECOMENDED FOR NEW DESIGNS **
Information about this Display Module
Powerful 1.38″ Intelligent LCD-TFT display module powered by DIABLO16
220 x 220 Resolution (Round), RGB 65K true to life colours with LED Backlight.
Easy 5 pin interface to any TTL Serial Host:
VCC, TX, RX, GND, RESET
6 banks of 32750 bytes of Flash memory for User Application Code and Data
32Kb of SRAM purely for the User
16 General Purpose I/O pins for user interfacing, which include 4 configurable Analog Inputs
The GPIO is variously configurable for alternative functions such as:
3x I2C channels available
1x SPI dedicated for SD Card and 3x configurable SPI channels available
1x dedicated and 3x configurable TTL Serial comm ports available
Up to 6 GPIO can be used as Pin Counters
Up to 6 GPIO for PWM (simple and Servo)
Up to 10 GPIO for Pulse Output
Up to 14 GPIO can be configured for Quadrature Encoder Inputs (2 channels)
On-board micro-SD memory card connector for multimedia storage and data logging purposes
DOS compatible file access (FAT16 format) as well as low level access to card memory
Dedicated filtered PWM Audio pin driven by WAV files from micro-SD card, and external amplifier enable pin allows easy connection to an external amplifier for audio playback
Display full colour images, animations, icons and video clips on chosen 4D Systems display
Supports all available Windows fonts
4.0V to 5.5V range operation (single supply)
Module dimensions: 42.4 x 46.9 x 14.1mm
Weight ~15 g
Display Viewing Area: Round 35.1mm Diameter
The uLCD-220RD-PI includes the following items:
uLCD-220RD Display Module
4D Serial Pi Adaptor Shield
5 way ribbon cable
Getting Started Manual Available as a Download
If you are a first time user and just beginning your development, we strongly recommend purchasing a Starter Kit of this same model as it includes additional items that allow you to get started with your development immediately.
Starter Kit part number is SK-220RD-PI .
Diagonal Display Size INCHES
Operating Ambient Temperature
-20°C to +70°C
-30°C to +80°C
5 pin Interface
Display Viewing Area (mm)
Module Dimensions (mm)
42.40 x 46.90 x 14.10
Country of origin
CCCN / tarif code
ECCN export control code
Package Dimensions L x W x H (mm)
107 x 76 x 36
Product Weight (g)
Weight with Packaging (g)
1220K Pixels / second
SD Card Slot
Yes – RAW or FAT16 Support. SPI Compatible microSD Cards Only
Workshop4 is a comprehensive software IDE for Microsoft Windows that provides an integrated software development platform for all of the 4D family of processors and modules. The IDE combines the Editor, Compiler, Linker and Downloader to develop complete 4DGL application code.
All user application code is developed within the Workshop4 IDE.
DEVELOPMENT ENVIRONMENTS THAT SUITS ANY APPLICATION & USER LEVEL
Workshop4 includes four development environments for the user to choose based on application requirements or even user skill level.
Enables user to write 4DGL code to program the display module.
4DGL syntax is similar to C: no need to learn a new language.
4DGL is optimized for GOLDELOX, PICASO, PIXXI and DIABLO Controllers.
Aptly named, a visual programming experience as you develop the display.
Enables drag and drop of objects in a WYSIWYG editor.
Software generates 4DGL code for the graphics.
An advanced environment; no 4DGL coding Required.
Everything is automated.
Drag and drop objects on the display.
Code written automatically.
ransforms the module into a serial slave.
Control the module from any host microcontroller with a serial port.
All serial protocols and documentation are provided.
Make complex widget design, simple.
Smart Widgets Editoris a powerful utility which enables the generation of Smart Widgets.
Users can create complex widgets with up to six layers, including the layer for the base image. The order of the layers can be arranged as desired.
Each layer can contain one or more images arranged in sequence that can be manipulated in a variety of ways. Image manipulation options include horizontal motion, vertical motion, and angular motion. Additionally, the transparency of a layer can be set.
Two or more layers can be linked to produce synchronized movements of images. This enables the generation of complex widgets with multiple moving parts. Clockwork feature is also supported. This enables users to quickly generate clock widgets.
Each layer can have a numeric part which can display numbers in various fonts and formats. Alternatively, the numeric part can be a fixed sequence of text.
The output frames can be utilized using any of the supported Workshop4 environments.
Genie Magic is an extension to ViSi-Genie, which is available in Workshop4 PRO. Genie Magic allows the User to add 4DGL code to various points in the ViSi-Genie backend code, which allows Users to take full advantage of the power of 4DGL, while retaining the speed and convenience of ViSi-Genie and its defined communication protocol.
Genie Magic allows you to enter 4DGL code in the form of Events, Code and Objects, along with various touch related additions too, giving you to the power to achieve advanced GUI’s in ViSi-Genie without having to write the full code yourself.
Genie Magic is fully supported by the genieArduino and geniePi libraries, making communication with an Arduino or Raspberry Pi host even more powerful.
When using Genie Magic in combination with the Smart Widget Editor, it is possible to use the Smart Widgets Editor tool and Smart Widgets to create other graphical user interface elements such as:
Fading Slide-To-Unlock Button
Spectrum With Transparency
And Many Others
Compatibility: Workshop4 is a Windows-only product. It is compatible with Windows 8 through to Windows 11.
Note some older OS such as ME, Vista, XP and 7 have not been tested for some time and are not supported by Microsoft anymore; however, they may still work. Legacy support updates for the older OS may not be possible, depending on what issues are found. For best results, run a current Windows OS. It is possible to run Workshop4 under a VM on Linux or Mac. However, it is up to the User to set this up.
4D SYSTEMS started as an idea, which grew to become a global company that engineers real-world solutions. We want to empower forward-thinking engineers, designers and organisations who, by using our products, also help solve real-world problems and make a positive impact, one display solution at a time.
Certification of Quality Management System (QMS).
ISO 14001: 2015
Certification of Environmental Management Systems.