crossing gate

I’ve decided to scratch build a pair of N Scale Crossing signals with gates. I found some gates at the Amherst Train Show earlier this year and I already had several crossing buck signs from a previous layout. The part I need to construct somehow is the assembly circled in the photo below. Any...

Is there any interest in a flashing RR Crossing sign with track detectors that I've developed and that you can put together real cheap. I have a bell module working but not perfected and have a motorized gate in development for limited quantities. All are planned to be under $20. So...