4.3″ Embedded SPI Display

The 4DLCD-FT843 is an embedded SPI display from 4D Systems, featuring a 4.3″ resistive touch display with an integrated FTDI FT800 Video Engine.

The 4DLCD-FT843 is a powerful SPI Display which enables a SPI host to be connected directly to the display, providing a powerful set of graphics features to the host using the on board FTDI FT800 Video Engine.

This display provides 4 in one functionality, a 4.3″ TFT LCD Display, Audio with amplifier enable, and Resistive Touch screen and an integrated Video Engine. This combination built directly into the screen allows for simple integration into a number of applications.

The FT800 Display Processor runs the FTDI version of EVE (Embedded Video Engine), which targets high quality graphics displays with Widget support, designed to offload the Host Processor and provide a variety of graphics features.

4D Systems has designed an Arduino Shield nicknamed ADAM (Arduino Display Adaptor Module) to interface with the EVE driven 4DLCD-FT843 Display, along with a simple breakout board (4DLCD-FT843-Breakout) to attach to a generic host or breadboard. Please refer to their product page on the 4D Systems website, and associated Documentation.

All software support for the 4DLCD-FT843 Display is provided directly from FTDI. FTDI also write and supply the libraries and demos for this shield/display combo. Hardware support is provided by 4D Systems.

Information about the display module

  • 4.3″ TFT LCD Transmissive Display with 480×272 Resolution, and 262K Colours
  • 4 Wire Resistive Touch screen
  • Mono PWM Audio output with separate amplifier enable, designed to be connected directly to a simple filter and amplifier circuit.
  • On board FTDI FT800 Video Engine
  • SPI Interface to Host Processor/Controller, up to 30Mhz (Mode 0 only)
  • Standard 10 way 0.5mm pitch FPC ribbon which carries SPI, Audio, I/O and Power to/from the Display.
  • Programmable Interrupt Controller, with dedicate Interrupt pin to Host
  • 64 voice polyphonic sound synthesizer
  • PWM dimming control for LCD backlight
  • Power mode control to put the FT800 into sleep and standby modes, with dedicated power down pin to Host
  • Single 3.3V supply
  • 3.3V SPI Bus, Audio Output and amplifier Enable, not 5V tolerant.
  • Display Dimensions: 105.5 x 67.2 x 4.2mm (Not including flex)
  • Flex length from base of display: 57.51mm
  • Viewing Area: 95.04 x 53.86mm
  • Touch Area: 96.7 x 55.5mm
  • Weight: ~50gm
  • RoHS Compliant
  • CE Compliant

4DLCD-FT843 Includes the following items:

  • 4DLCD-FT843 Display Module


Diagonal Display Size INCHES





~500 cd/m2

Backlight LEDs




Operating Ambient Temperature

-15°C to +65°C

Storage Temperature

-30°C to +70°C


10 way FPC Ribbon

Display Viewing Area (mm)

95.04 x 53.86

Module Dimensions (mm)

67.20 x 105.50 x 4.20



Country of origin


CCCN / tarif code


ECCN export control code






Package Dimensions L x W x H (mm)

156 x 112 x 40

Product Weight (g)


Weight with Packaging (g)




CE Mark


Supply Voltage

3.0V – 3.6V DC

Supply Current


Frame Rate

25 fps



SD Card Slot


Viewing Angle

Standard Viewing Angle


Viewing Area: 95.04 x 53.86 mm

Module Width: 105.50 mm

Module Height: 67.20 mm

Module Depth: 4.20 mm

Module Weight: 50 g


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.


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


Make complex widget design, simple.

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

  • Dock Menu
  • Quarter-Rotary Menu

  • 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.


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