The LDR is read by the ESP32 which uses the value to dim the nixies and the LEDs. The meters don't dim - the power comes straight from the 6V3 filament winding for them. The little neon is a mains power indicator. It is wired straight across the inputs (with a suitable resistor). It was a safety feature when I was bread-boarding this thing. Now, when the clock display is turned off, you can see power is still applied because that still glows.
On Thursday, October 3, 2019 at 2:59:18 PM UTC-4, GastonP wrote: > > Really beautiful and well done! > > What's the purpose of the LDR in front? > > The writeup will make a very interesting read, I'm sure. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d95e03bb-58c9-47b8-bd6f-a421e4ef8303%40googlegroups.com.
