Hand wired perfboard ? it's worse than that... Look at the board layout in the corner regarding the SMPS, it's a luck that it actually works :-O
https://lh4.googleusercontent.com/-PsF8r0jvHEQ/UZDN7eiidtI/AAAAAAAABH4/x_mkJRi4IPU/s1600/nixieclock_v1.1_Leiterplatte.jpg That layout is _flawed_ // Per. On 14/05/2013, at 02.38, threeneurons wrote: > Is there some hand wired perfboard circuitry involved ? If so, can you > provide a photo of both sides. Back in school (when dinosaurs roamed the > Earth), I noticed a lot of my fellow students, used thin wire for everything. > Power and ground should be heavier. Those switching supplies generate a bunch > of interference. This makes "physically" routing signals, especially power > and ground, even more important. Everybody should get a copy of Don > Lancaster's TTL Cookbook, if just for the construction guide lines. For > actual circuit ideas, you can get his CMOS Cookbook, too. Both are old books, > form the 70's, but many of the guidelines still apply. > > On Monday, May 13, 2013 4:19:05 AM UTC-7, nix wrote: > Hello I just build my own Nixie clock with input from Arduinix.com and a > power supply from ledsale (Build a nixie power supply - LEDsales) > > Attached find the circuit and the pcb from fritzing. The clock works fine but > when I adjust the high voltage with R36 the ds1307 module from Twig > http://shop.boxtec.ch/twig-ds1307-p-40355.html starts to flicker because on > the serial interface it shows strange numbers like 165:165:85. After a while > it does not return the time over the i2c interface at all. A restart of the > nixie clock starts showing the time again. With an oscilloscope I can see > that after a certain position on R36 the SDA puls disapear and it shows a > flat line. I think it is at high level. Not so shure how to read the > oscilloscope. > > Any Idea why? I don't see a direct link from the high voltage power supply to > the 2 wire interface. (see attached circuit) > > Kind regards > > Sergio > > > -- > 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/8f9bd2a6-1578-4dfe-b029-bc81159848d4%40googlegroups.com?hl=en-GB. > For more options, visit https://groups.google.com/groups/opt_out. > > -- 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]. For more options, visit https://groups.google.com/groups/opt_out.
