This Hubitat Elevation driver sends a text string via UDP to a device on the network. Strings are set in the device preferences and can be sent by triggering a push, doubleTap, or hold command. The goal is to control Figure 53's QLab using plaintext OSC commands, but this driver could be used for any network device that is looking for commands via plaintext UDP.
Set up a Button Controller or Rule Machine rule to trigger button presses on this driver. Then, any button compatible with Hubitat (e.g., Sonoff SNZB-01) can send commands.
This is a purpose-built driver for my own workflow, but I will entertain pull requests. Feel free to fork.