Serial – Three Hands Store

Multi USB / RS232 / RS485 / TTL Converter

admin — Fri, 19 Jul 2024 14:39:12 +0000

Introduction

Multiplexer has a set of interfaces for a variety of multi-function adapter plates. It supports USB, TTL, RS232, RS485 interfaces between the system conversions. What’s more powerful is that it also supports one input multiple outputs, which greatly facilitates the communication between various controllers.

Tip: Multiplexer board is divided into A and B interfaces. The signal can be convertered between A and B. The signal in the same interface can’t be convertered thus only one sender in the same interface, but it allows to have multiple receivers.

In this example, USB signal is converted to TTL, RS232 and RS485 at the same time.

Specification

Supply Voltage: 3.3V to 5V
Power LED on board
Size:52x37mm(2.05X1.45″)

Documents

Shipping List

Multi USB/RS232/RS485/TTL Converter x1

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USB to TTL Converter (CP210)

admin — Fri, 19 Jul 2024 14:39:12 +0000

Introduction

This USB to TTL converter combine the USB-232-1 (USB to Single RS232 Adapter) and TTL-232-1 (Port-powered RS232/TTL converter) allows you to convert USB to TTL/CMOS compatible levels and vice versa.

It can be used to set up APC220 RF wireless module.

It can be used as STC microcontroller program downloader.

The PCB color may vary and not the same as shown in the picture.

Specification

Voltage: 5V
Chip: Silicon Laboratories CP210x

Documents

Drivers

Shipping List

USB to TTL Converter (CP210) x1

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RS485 Shield for Arduino

admin — Fri, 19 Jul 2024 14:38:49 +0000

Introduction

RS485 is an industrial standard for long-distance, anti-interference, and reliable communication. The Arduino RS485 shield, specially designed for the Arduino Uno board. It converts UART/Serial protocol to the RS485 protocol. This RS485 board allows Arduino talk to industrial devices.

In contrast to RS-422, which has a single driver circuit that cannot be switched off, RS-485 drivers use three-state logic allowing individual transmitters to be deactivated. This allows RS-485 to implement linear bus topologies using only two wires. The equipment located along a set of RS-485 wires is interchangeably called nodes, stations, or devices.

Integrated a standard RS485 port, a mini RS485 port, RS485 headers
Provide the welding areas to make full use of the free space. And more importantly, it’s convenient for your DIY design.
Switch between automatic mode and manual transmission mode, which expands the scope of application.
Besides Tx/Rx interface, there is a switch to block/disable this shield, when Arduino needs to be programmed.
Gold immersion PCB. Long pins on the back adapt to most Arduino controllers.

What is RS485?

“RS-485 enables the configuration of inexpensive local networks and multidrop communications links. It offers data transmission speeds of 35 Mbit/s for distances up to 10m and 100 kbit/s up to 1200 m. Since it uses
a differential balanced line over twisted pair (like RS-422), it can span relatively large distances up to 1,200 m (4,000 ft). A rule of thumb is that the speed in bit/s multiplied by the length in meters should not exceed
108. Thus a 50-meter cable should not signal faster than 2 Mbit/s.” From Wiki.

Specification

Power module: +5V
Module size: 55mmx53mm(2.16″x2.08″)
16 digital IO ports (including an I2C interface)
6 analog IO ports and power
Operation and programming mode switch
Automatic and manual transceiver mode switch (When in manual transceiver mode, the enable end is the 2nd digital IO port)
Transceiver indicating LED
Standard RS485 interface, mini RS485 interface, and RS485 pins
Welding area
Reset switch
PH2.0 sensor interface for DFRobot RS485 series sensor: URM04 Ultrasonic sensor

Documents

Shipping List

RS485 Arduino shield x1

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