[Windows/Ruby 3.3] serialport Fails to Build

[tngliker]

I’m trying to use timex_datalink_client v0.12.3 on Windows 10 with Ruby 3.3.0 to sync with my Protocol 1 Timex Data Link watch using a Raspberry Pi Pico running timex-datalink-arduino (also tried with the DIY_Datalink_Adapter). However, the gem relies on serialport, which fails to build on Ruby 3.3 for me. The serialport gem hasn’t been maintained and is expected to break entirely in Ruby 3.4 (ruby-serialport#78).

The timex_datalink_client requires Ruby 3.1 or later, but serialport only builds earlier than Ruby 3.0. I attempted to replace serialport with rubyserial, but the code fails due to the issue described in Issue #308. I’ve also tried adjusting sleep timings and other troubleshooting steps. Certain tests have gotten the Pico's LED to at least blink, but the watch doesn’t respond.

Thanks for your help!