Ah, OK, I can see what you did there - excellent. .... and you can see that I did mostly the same, I just modified the circuit board to fit the tubes - same software!
- Richard On Sunday, 14 November 2021 at 16:02:36 UTC valve monky wrote: > [image: IMG_20210311_233608.jpg] > photo of it rear > On Sunday, November 14, 2021 at 4:50:02 AM UTC Richard Scales wrote: > >> @Mark Moulding - actually - no - that's it, that's all there is. The >> logic is hiding on the back: >> >> [image: Capture2.JPG] >> >> It consists of a WeMos D1 min micro controller which handles most >> everything. Individual TLC5916 drivers - one per tube then there is an >> optional DS3231 RTC which requires a battery to keep it going during power >> outage. >> >> I have never actually bothered with fitting the RTC as the WeMos syncs >> the clock with NTP time. >> >> There are connections for a button, a motion control device and there is >> a light dependant resistor which will dim the tubes when the ambient light >> decreases. All configuration is via a web gui - the software that runs >> everything is from Ian Sparks and has been used with his kind permission. >> >> There are options for powering it via USB (that chunky rear entry socket >> type) or by 12V barrel connector (using a simple 12V to 5V module which >> behaves like a 7805 but is in fact a proper power supply inside). >> >> There is also the option of under tube LED 'bling' which by default uses >> APA-106 LED's though I have made some tiny PCB's that will solder as >> APA-106 but actually have a WS2812B neopixel. It all depends on how far the >> nipple on the tubes extends into the hole that I have made for them. >> >> The overall design should allow the construction of a fairly skinny case. >> >> - Richard >> >> >> On Saturday, 13 November 2021 at 18:18:08 UTC Mark Moulding wrote: >> >>> @Valve Monky: That's a nice-looking clock! The beveled edges of the >>> plywood give an attractive effect to a look I'm ordinarily not too fond of >>> - nice job! >>> >>> @Richard Scales: I assume this is a separate display board for a logic >>> board somewhere else in the clock. That's the approach I took, so that I >>> can make different clock layouts without having to redesign the whole clock >>> every time. Regarding the tube spacing, I think you're going in the right >>> direction - every time I moved them closer, the clock looked better. This >>> is a terrible picture, but the clock looks pretty nice in person... >>> >>> Initially I put the drivers on the main board and used a ribbon cable to >>> connect the two (I'm using 74LS595s to directly drive the filaments, >>> non-multiplexed). However, routing that wide cable turned into a hassle >>> sometimes, so now I just have an eight-conductor cable (power, ground, >>> shift clock, data, load strobe, output enable, colon, light sensor). Of >>> course, laying out the traces between the tubes and the drivers is almost >>> the most tedious part, but they're not at all critical so I just let the >>> PCB package take a stab at auto-routing - the result frequently looks ugly, >>> but it changes a two-hour job into a three-minute one. >>> >>> It turns out that sockets for the DTF-104Bs are still commonly available >>> from the vintage audio dealers - they're 9-pin Novar/Magnoval sockets, such >>> as this one <https://tubedepot.com/products/9-pin-novar-magnoval-socket>. >>> If you lay out the board with larger pin holes, you can use point-to-point >>> sockets like these as PCB mount. Just make sure to have a tube in the >>> socket when soldering onto the board, so that the pins are lined up >>> correctly. >>> ~~ >>> Mark Moulding >>> >>> [image: LeopardClock (Large).jpg] >>> On Saturday, November 13, 2021 at 9:08:18 AM UTC-8 Pramanicin wrote: >>> >>>> Excellent stuff....those tubes look great. >>>> >>>> On Fri, Nov 12, 2021 at 8:01 PM Richard Scales <ric...@scalesweb.co.uk> >>>> wrote: >>>> >>>>> >>>>> I'm about to embark on a similar journey - I've gone for tighter tube >>>>> spacing which I'm not 100% convinced will be right - time will tell. >>>>> >>>>> [image: Capture.JPG] >>>>> >>>>> - Richard >>>>> >>>>> >>>>> On Friday, 12 November 2021 at 17:32:30 UTC newxito wrote: >>>>> >>>>>> Nice job, that's a great looking clock! >>>>>> >>>>>> valve monky schrieb am Freitag, 12. November 2021 um 17:25:44 UTC+1: >>>>>> >>>>>>> [image: IMG_20210311_233745.jpg] >>>>>>> >>>>>>> -- >>>>> 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 neonixie-l+...@googlegroups.com. >>>>> >>>> To view this discussion on the web, visit >>>>> https://groups.google.com/d/msgid/neonixie-l/aaad07c8-c0b8-4f4e-8620-4da962684728n%40googlegroups.com >>>>> >>>>> <https://groups.google.com/d/msgid/neonixie-l/aaad07c8-c0b8-4f4e-8620-4da962684728n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/15c2ecff-714a-4dfa-be57-f375ff647573n%40googlegroups.com.
