• sales

    +86-0755-88291180

USB TO 4CH TTL User Guide

Features

  • Extending USB to 4CH TTL (UART) with hardware flow control, allows concurrent and independent communication for each channel.
  • Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof and improves shock resistance.
  • Onboard IO protection circuit for surge suppress and ESD protection, safe and stable communication.
  • Onboard TTL serial port 3.3V and 5V voltage level switch, allows selecting TTL level.
  • Aluminium alloy enclosure with oxidation dull-polish surface, CNC process opening, solid and durable, well-crafted.
  • Quality USB-B connector, and IDC connector with fool-proof design.

Specifications

  • Working voltage: 5V
  • Working current: 32mA
  • Serial Baud rate: 1200bps ~ 460800bps
  • TTL voltage: 3.3V / 5V (configuable)
  • Working temperature: -40°C ~ 85°C
  • Supported OS: Mac OS, Linux, Windows 11/10/8.1/8/7, Android

Pinouts



About CH343

CH343 is a USB bus adapter chip, realizes USB to high-speed asynchronous serial port, and supports up to 115200bps communication Automatic identification and dynamic self-adaptation of baud rate, providing common MODEM contact signals for expanding asynchronous serial ports of computers, or feature USB bus for the common serial device or MCU.

How to use

Windows

For most of the PC, the driver for CH343 is CDC by default, if you need to use VCP driver, please download the driver and install munually.
The CH343 USB UART board use software flow control by default, if you want to use hardware flow control, connect CFG to EN for CDC mode, set in SSCOM software for VCP mode.

Linxu/Raspberry Pi

To work with Raspberry Pi, it is driver-free, just connect and check with the following command:

ls /dev/tty*

The port should be named as ttyACM0, user can use the minicom tool to test.

sudo apt-get install minicom -y
minicom -D /dev/ttyACM0

MacOS

To use with MacOS, please download the driver and follow the guide

Android

To use with Android device, please donwnload the APP and test.

TAG: Power Manager Module USB CAN Analyzer ESP32 Thermal imaging Milk-V Duo Tang-Nano-20K-FPGA-Unboxing Wiki Rasperry Pico 2 RP2350 7.3 inch e-Paper Ink Display E6 Full Color Electronic PhotoPainter 800x480 For Calendar/Quotes/Paintings/Posters ESP32 2 inch Capacitive TouchScreen LCD Display ST7789 CST816D 240x320 For Arduino/Raspberry Pi/Pico Workstation electronic Nameplate Install Espressif IDF Plugin Tutorial User Guide Spotpear Raspberry Pi 5 Jetson Nano 5G module Raspberry Pi5 PCIe TO M.2 MINI Support Gen2 and Gen3 SSD Compatible 2230 2242 Raspberry Pi Pico 2 RP2350-Tiny/Tiny-Kit Super Mini Board RP2350A UGV Beast PT AI 4G 5G OpenCV Robot Car MediaPipe For Raspberry Pi4B/5 WIFI Configuration Jetson Nano Fan ESP32-C6 WiFi 6 Development Board ESP32-C6-MINI-1Support WiFi6 Bluetooth5 Zigbee Thread Raspberry Pi Pico 2 RP2350 Core A Development Board RP2350A