On Saturday, February 16, 2019 at 5:48:53 PM UTC-5, Sgitheach wrote: > > The purpose of this email is to try to gauge interest in the clock to help > us get the right number of PCBs made. So I would appreciate an email from > any one who has some E1T tubes and might want to build a clock with them. > *Such > an email will be on a no-obligation basis*. If you choose not to buy any > PCBs or a kit then that choice is still yours to make. > > It is unlikely that Nick and I will be selling any E1T tubes as we only > have enough for our own clocks and for what we hope to sell with built and > tested. >
I would definitely be interested in an "all parts except tubes" kit. If you will be having the SMT components wave-soldered, I'll take the version with pre-soldered SMT, otherwise I'll take the version with all components unsoldered. A few things which you may or may not have considered: 1) When I was trying to purchase an E1T clock from another designer here some years ago, they were very reluctant to sell one without tubes as apparently their firmware needed to be calibrated to deal with manufacturing variations in the E1T tubes. Have you encountered this issue and if so, do you have workarounds in place? 2) Given the rarity of E1T tubes, anything that extends their life will be a Good Thing. I would guess (but have no actual data to back that guess up) that the longest life would be from reducing filament voltage when the clock is in "sleep" mode (either from PIR timeout or scheduled sleep times). I would think that would provide longer life than either leaving the filaments on 100% at all times, or completely un-powering them in sleep mode. I thing Greg Ebert (also a member here) has done a great deal of work characterizing filaments and may have some useful info to add. 3) It would be nice if in addition to the on-board WiFi and GPS options, there was an option for an external (RS-232 or TTL) GPS receiver that provides NMEA sentences. That would let this clock use the same GPS distribution system as my other clocks (GPS timing provide by the MOD-SIX repeater). -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/856e344f-694e-476e-baa9-7509401010ce%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
