The Hunda Tech HD35-RS is a 3.5" TFT color display module with RS485 interface, built‑in ASCII/Chinese fonts, 64 Mbit memory and drawing commands.
The HD35-RS module provides a 3.5" TFT color screen with 480×320 RGB resolution, built‑in ASCII and Chinese font libraries, and 64 Mbit of internal memory for storing BMP images. It operates from 6 V to 15 V and includes a white LED backlight.
The manual describes the RS485 control interface, ISP image‑download interface, command packet format, and a full set of drawing commands for points, lines, rectangles, circles, text, and images. It also lists default communication speeds (9600 bps for RS485, 256000 bps for ISP) and provides examples of command structures for graphics and text rendering. This manual is written in Chinese.
| Display resolution | 480×320 RGB |
|---|---|
| LCD size | 3.5 inch |
| Operating voltage | 6 V – 15 V |
| Backlight type | White LED |
| Typical working current | 50‑80 mA |
It uses an RS485 interface for communication with a MCU.
The module includes four ASCII font sets and four Chinese font sets.
The default communication speed for the RS485 control port is 9600 bps.
The ISP image‑download serial port defaults to 256000 bps.