Nextion HMI LCD display module + touch interface 2.8"
This little unit is an amazingly powerful human-machine interface (HMI) module. The user interface is built using Nextion's software - then flashed onto the module by serial link. The editor supports common controls such as buttons, bars, sliders and such and is configurable in a drag-and-drop manner, without writing code.
To interface with the world and get events and data to/from the module, you connect its serial port to your microcontroller, computer or ESP8266 wireless board.
Model number: NX3224T028
2.8", 320 x 240 Resolution
RGB 65K true to life colours
TFT Screen with integrated 4-wire Resistive Touch Panel
Easy 4 pin interface to any TTL Serial Host
4M Flash memory for User Application Code and Data
On board micro-SD card for firmware upgrade
Visual Area:57.6mm(L) × 43.2mm(W)
Adjustable Brightness:0~180 nit, the interval of adjustment is 1%
5V 65mA power consumption
The Nextion Editor (for creating the user interface and flashing the display module) can be downloaded here.
To flash a new HMI from Nextion Editor you'll need an FTDI cable. Included with the Nextion display is a short 4-pin connecting cable that breaks out the GND, VCC, TX and RX pins on the module to individual flyleads. Hook these up to your FTDI as follows:
- FTDI GND to Nextion GND
- FTDI +5V to Nextion +5V
- FTDI TX to Nextion RX
- FTDI RX to Nextion TX
When you first connect the module to power, a demo app will show up which shows off some of the controls available in the Nextion Editor. You can download a copy of the demo HMI for this display module here.
There is also a micro-usb breakout that can be used to power the module from a +5V micro-USB supply. Simply hook this up with + going to +5V and - going to GND.