Post #2318541
2026-04-30 06:10 UTC
I’ve made some progress on the Ringer 2A
It’s now bolted to a bit of plywood, with its “U-Point” * connectors mounted on 3D printed standoffs
I’ve got all the diagrams, and know which of the 64 connections are needed to make it chooch… I’ve just got to get it wired up and sort out a power supply with enough beef (6A of inductive load at 50V) to start it spinning!
* I’ve no idea why they’re called “U-Points” - but if I say “back the right odds” a certain age of engineers brain will light up
Replies (1)
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@snaprails@cupoftea.social 2026-04-30 07:40
@lpbkdotnet@mstdn.social They’re called U points because the shelf contacts for jack-in selectors and relay sets are U shaped, as just about discernible in this photo. I don’t think that your ringer contacts are the same as U points though, are they?