Too late for Dirk, but most certainly in his honor and in tribute to his amazing work. My son's FreemoN module at Altoona with newly installed ATSF Models Semaphores integrated into MSS. An Arduino senses voltage from an Iowa Scaled Engineering board to operate servos that push/pull the wire in Dirk's model. It was a relief to see them test out ok and even more of a relief to see them run all weekend, protecting one end of a bridge over the Ohio River.
Youtube stuffed the vertical format into a "short" and RW's forum software seems to reject the URL as an invalid Youtube link, so here the URL:
https://www.youtube.com/shorts/gUQip_VDaBABob
