Calendar UDP Sender: Connect Your Calendar to Home Automation via UDP
Publication Description: Convert your calendar events into busy/free UDP signals for your home automation, an "ON AIR" tally light, or a status display. Calendar UDP Sender includes a local calendar and can also query online calendars.
Ricard de la Zarza
Do you want a light to indicate when you're in a meeting, a studio tally light to turn on automatically, or your schedule status displayed on a screen? Calendar UDP Sender connects your calendar to those devices via UDP messages on your local network.
The application checks if there is an ongoing event and sends your configured status—for example, busy or free. If needed, it can also send the event name over a second port. Operating via configurable UDP messages, it can integrate with automation and control systems like Crestron, AMX, and Control4, as well as Raspberry Pi, Arduino, PLCs, and other devices or software capable of receiving and processing those messages. Integration depends on the controller's configuration or the custom logic/programming used in each installation.
Choose How to Manage Your Calendar
By default, Calendar UDP Sender uses its built-in local calendar. You can create events, modify names and schedules, set daily, weekly, monthly, or yearly recurrences, and edit or delete events.Recurrences are handled as series. The local calendar is saved on your computer and works completely offline without an internet connection.
If you already use an online calendar, you can also choose Google Calendar or an iCal/ICS feed. The app queries that source and updates your upcoming event schedule.
A Practical Interface
The window displays your current status and upcoming events. It includes the date and time, a collapsible side agenda, and support for both Spanish and English interfaces. You can also resize the window: the program remembers its size and position.
Messages, destination IP addresses, and UDP ports are fully configurable. By default, the status is sent to port 5005, and if you enable sending the event name, it is transmitted over port 5006.
Installation
For Windows, the software is distributed via an installer that registers Calendar UDP Sender among your installed applications, providing shortcuts and easy uninstallation. The package includes PDF manuals in both Spanish and English.
