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Starting at US$214.95
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Expected back in stock
31 / 05 / 23
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  • 5.0", 480x854 pixels, Intelligent IPS Display with Capacitive Touch
  • Wall/Panel mountable display solution with embedded DIABLO16 processor.
  • Designed for Home- and Building Automation Applications
  • Includes Enclosure and 2 x RJ45 Jacks with RS485 Interface (default)
  • Includes Proximity Sensor
  • WiFi Enabled (Optional)
  • Bluetooth Enabled (Optional)
  • Starter Kits available for first time users.
  • See product description below for more details.

4Discovery 5.0" Integrated Wall/Panel Mount Display

The 4Discovery-50 is a high resolution 480x854 pixel 4.95” (referred to as 5.0”) Intelligent wall mounted display solution from 4D Systems, featuring the DIABLO16 Processor and IPS display with wide viewing angles.


The 4Discovery is designed to be mounted directly onto a panel or wall, or any flat drillable surface. This universal mounting enables quick and easy installation almost anywhere in any orientation, enabling a wide range of users to take advantage of this display product.


Driving the display and peripherals is the DIABLO16 processor, a very capable and powerful graphics processor from 4D Systems, which enables stand-alone functionality, and is programmed using the 4D Systems Workshop4 IDE Software. The Workshop4 IDE enables graphic solutions to be constructed rapidly and with ease due to its design being solely for 4D’s graphics processors.


The 4Discovery has an array of features including a 5.0” 480x854 pixel TFT IPS LCD Display, Capacitive Touch, micro-SD memory storage, 2 wire RS485 Interface which can act as Master or Slave with additional changeover wire, Proximity sensor to wake (or otherwise) the unit as someone approaches, and a switch-mode power supply enabling a wide input voltage range, along with many more features.


Anything that has been designed to run on a PICASO or DIABLO16 module can theoretically run on this 4Discovery with minor changes. Please ensure you contact the 4D Systems’ support team if unsure changing over from a 4D Systems’ module to this 4Discovery.


Configurations and Customisability

The 4Discovery-50 has been designed with multiple configurations and customizability in mind. The inside of the 4Discovery-50 includes a daughter board that is permanently attached during assembly at the factory. By default this daughter board comes in a few different variations, but it can also be customized to a user’s specific requirements. For a custom configuration, please contact our sales team.



The default configuration of the 4Discovery-50 is with Daughter Board 1 (DB01). Unless otherwise stated, the 4Discovery-50 is assumed to be in this configuration and the part number is simply 4Discovery-50 (in some cases SKU can be communicated as 4Discovery-50-DB01).


In this configuration the 4Discovery-50 provides a looped dual port RS485 communications BUS. This default configuration enables RS485 communications using a 2-wire bus, and the dual RJ45 ports at the back enable daisy chaining multiple modules or other RS485 devices together on the BUS without the need for RS485 hubs or splitters. Please refer to the datasheet for additional details.



The 4Discovery-50W includes the same features as described above as well as additional Wi-Fi and Bluetooth connectivity enabled by ESP32-PICO-D4 SoC with both an integrated ceramic antenna and a u.FL connector for an external antenna. Please refer to the datasheet for further information.


Starter Kits

Starter kits are available for all configurations. The starter kits include everything needed to get started with development with that particular configuration of the 4Discovery-50 and it is highly recommended to purchase a starter kit as a first-time user or if you are just starting your development project. 

Please refer to the "What's in the box" section for the part number and content of the starter kit.


Additional customisations

For other customisations such as plastics colour, or for more detailed enquiries specific to your application, please contact our Sales Team.

Information about the Display Module

  • Powerful 5.0” Intelligent LCD-TFT display module powered by DIABLO16.
  • 480x854 FWVGA Resolution (Full Wide Video Graphics Array), RGB 65K true to life colours, TFT Screen with integrated Capacitive Touch Panel.
  • IPS Panel with wide viewing angles from all directions.
  • Programmed over RS485 using a special programmer designed specifically for the 4Discovery.
  • 6 banks of 32750 bytes of Flash memory for User Application Code and Data
  • 32Kb of SRAM purely for the User.
  • On-board micro-SD memory card connector for multimedia storage and data logging purposes. HC memory card support is also available for cards larger than 4GB.
  • Optional Flash Memory can be ordered for internal storage of limited graphics, where microSD card storage is undesirable.
  • On board proximity sensor found behind the top edge of the display glass, can be used for activation of the display, wake from sleep, or other functions as programmed by the User.
  • Optional features: 
    • On board WiFi and Bluetooth using the Espressif ESP32-PICO-D4 SoC, with both an integrated ceramic antenna and a u.FL connector for an external antenna.
  • DOS compatible file access (FAT16 format) as well as low level access to microSD card memory.
  • Display full colour images, animations, icons and video clips on chosen 4D Systems display.
  • Supports all available Windows fonts.
  • 5.0V or 7.0V-to-30V input voltage range operation (single supply).
  • Module dimensions: 76.2 x 139.4 x 24.8mm
  • Weight approximately 130g.
  • Display Viewing Area: 62.56 x 110.53mm
  • Easily mounted to the wall, enclosure, panel or virtually any flat drillable surface.
  • RoHS and CE Compliant.
  • Available configurations:
    • 4Discovery-50 - RS485 only
    • 4Discovery-50W - RS485 with  Wifi & Bluetooth Enabled
    • Starter Kits available
    • Contact Sales for custom configurations

Select Suitable Configuration for your Application

The 4Discovery-50 is available in multiple configurations as well as Starter Kits. Please refer to the Overview section for additional information. The content of each configuration is as follows.


  • 4Discovery-50 in Daughter Board 1 configuration.
    • (SKU sometimes communicated as 4Discovery-50-DB01)


  • 4Discovery-50 in Daughter Board 1 configuration with WiFi and Bluetooth enabled.
    • (SKU sometimes communicated as 4Discovery-50W-DB01.)

SK-4Discovery-50 (Starter Kit)

  • 4Discovery-50 in Daughter Board 1 configuration.
    • (SKU sometimes communicated as 4Discovery-50-DB01)
  • uSD-4GB-Industrial microSD Card
  • 4D-RS485-Programmer for programming the module via RS485.

SK-4Discovery-50W (Starter Kit)

  • 4Discovery-50 in Daughter Board 1 configuration with WiFi and Bluetooth enabled.
    • (SKU sometimes communicated as 4Discovery-50W-DB01.)
  • uSD-4GB-Industrial microSD Card
  • 4D-RS48-Programmer for programming the module via RS485 

If you are a first-time user and just beginning your development, we strongly recommend purchasing the Starter Kit as it includes everything you need to get started with your development immediately.

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.

Download Workshop4

Workshop4 includes four development environments for the user to choose based on application requirements or even user skill level.

  • Designer

    This environment enables the user to write 4DGL code in its natural form to program the display module.

  • ViSi - Genie

    An advanced environment that does not require any 4DGL coding at all. Everything is done automatically for you. Simply lay the display out with the objects you want (similar to ViSi), set the events to drive them and the code is written for you automatically. ViSi-Genie provides the latest rapid development experience from 4D Systems.

  • ViSi

    A visual programming experience that enables drag-and-drop type placement of objects to assist with 4DGL code generation and allows the user to visualise how the display will look while being developed.

  • Serial

    This environment is also provided to transform the display module into a slave serial display module. It allows the user to control the display from any host microcontroller or device with a serial port.


Smart Widgets Editor is 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:

  • Dropdown Menu
  • Side Menu
  • 'Carousel Slider'
  • List Box
  • Quarter-Rotary Menu
  • Dock Menu
  • Fading Slide-To-Unlock Button
  • Spectrum With Transparency
  • And Many Others
3.8 MB |
Rev. 1.4
1.5 MB |
Rev. 2.2
Software Tools
Product Page
STEP Models
Diablo16 Processor Documentation
Related Documents
This Application Note demonstrates a simple multi-drop RS-485 network, with a single Master node, and up to 254 Slave nodes.
Tutorials & Instruction