RTC
Realtime Clock
- Overview
- Commands
- Samples
- On-Module Code
A real-time clock module with a coin-cell battery backup that keeps time running even when the host is powered off. Set or read year, month, day, hour, minute, and second with simple text commands over any supported interface.
Common uses: dataloggers that need accurate timestamps, scheduled events on standalone projects, "time since last seen" calculations, and any battery-powered device that has to remember when it woke up last.
Key features • Real Time Clock | Resources 📄 Schematics PID: 0x06000F |
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.
| Function | Description |
|---|---|
SetTime(y,n,d,h,m,s) | Sets date/time to y year, n month, d day, h hour, m minute, and s second. |
GetTime() | Returns current time in _y, _n, _d, _h, _m, _s variables. |
DVer() | This driver version. |
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 RTC | GDL-SERTC-B | $12.95 |