Serial USB
USB Virtual Serial Port
- Overview
- Commands
- Samples
- On-Module Code
A USB virtual serial port module — plug it into a PC and a standard COM port appears, ready to send and receive serial data. Your DUELink host sees the connection as another stream it can write to and read from with simple text commands over any supported interface.
Common uses: logging to a PC terminal from a host that doesn't have its own USB, debug output during development, simple serial-protocol prototypes, classroom intro-to-USB labs, and bridging legacy serial-only software to a DUELink project.
Key features • USB Serial | Resources 📄 Schematics PID: 0x030006 |
Modules ship without cables to reduce waste. Some specialty boards include a USB cable; for the rest, see Cables to add cables to your order.
Commands this module accepts. See Samples for runnable code in popular host languages.
Peek under the hood
The script below is this module's driver — it teaches the hardware how to respond to the commands listed above. It ships pre-loaded from the factory; most users never need to open it.
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Example code that calls this module's commands from popular host languages.
New here? See Get Started to connect a module and send your first command.
- Python
- MicroPython
- JavaScript
- .NET
- Arduino
- MicroBlocks
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This sample runs in MicroBlocks on a any host board that's connected/tethered to this module, or a chain of modules. This module keeps its official DUELink firmware and module driver and responds to commands from the connected MicroBlocks-running host. New here? See the MicroBlocks page.
There are two ways to use it:
Open the full sample — the complete project (the module's library plus a ready-to-run example) opens directly on the MicroBlocks website.
Add just the libraries to your own project — copy the link, then in your MicroBlocks project click Add Library → Cloud and paste it. This loads this module's libraries into your project without replacing your current work.
Copy Library LinkCode that runs directly on this module's MCU. See how On-Module Code allows modules to run standalone.
- Script
- Arduino IDE
This example runs using the default DUELink Internal Engine using its Scripting Language, and it expects the module's driver to be loaded first, see the Commands Tab.
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See Arduino IDE page for more info.
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Ordering Info
| Product | Part Number | Price |
|---|---|---|
| DUELink Serial USB | GDL-CMSERUSB-A | $19.95 |