USB Host
USB Host Controller
- Overview
- Commands
- Samples
- On-Module Code
USB Host is a JST-connected module that gives any DUELink chain access to a USB-A port for memory sticks and other USB Mass Storage devices. FAT16 and FAT32 with long-filename support is built in — read and write files with simple text commands over any supported interface, no filesystem library needed.
Common uses: logging sensor data, storing configuration, loading assets at runtime, replaying melodies.
Key features • USB Host interface | Resources 📄 Schematics PID: 0x080004 |
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.
This module has no commands of its own — file access is handled by the engine's built-in File System library. The same file functions (FsMnt, FsOpen, FsRead, FsWrite, etc.) work whether you have USB Host, SD Card, or MicroSD connected, so the same code works across all DUELink storage modules.
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
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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Ordering Info
| Product | Part Number | Price |
|---|---|---|
| DUELink USB Host | GDL-STUSBHOST-B | $19.95 |