Nixie Clock RFT Z566M

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4 months 1 week ago #10848 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Nixie Clock RFT Z566M
Maybe just delay(10) at the bottom of the main loop like you did on the DA2000? That seems to give the background work enough time to keep up and doesn't really affect clock performance.

Look into it later when the dust is clearing off the crater.

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4 months 1 week ago #10849 by Ian
Replied by Ian on topic Nixie Clock RFT Z566M
right Ty, but I'm having two problems: On this clock, I want the digit cross fading to work, and the HV5622 appears not to respect the BLANK pin as I expected. I'm not sure if it only reads it when the latch is toggled, and in that case I won't be able to use the PWM as I wanted to.

Maybe I'll take a break for a bit and have another look at it when I have a fresh head.

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4 months 1 week ago #10850 by Ian
Replied by Ian on topic Nixie Clock RFT Z566M
I take it all back - it's a software problem to do with the smooth fade-out/fade-in when tube blanking...

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4 months 1 week ago - 4 months 1 week ago #10851 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Nixie Clock RFT Z566M
EDIT: Ooops. Typing at the same time as Ian was posting above. Guess this isn't relevant now.

Hard for me to contribute much without seeing the schematic. But I will say this: I've used plenty of 5530s but never 5622s. I have the data sheets side by side and the block diagrams are identical. So I think I'm safe thinking blanking works the same on 5622 as it does on 5530.

In my clock circuits I have /POL pin tied high. That matters because the state of /POL affects the action of /BL. I pwm /BL to control overall display brightness.For blanking I pull /BL low and the outputs turn off immediately. Clocking and latching have no effect on blanking behavior which is how it should be.

Look into it later when the dust is clearing off the crater.
Last edit: 4 months 1 week ago by Ty_Eeberfest.

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4 months 1 week ago #10853 by Marvin41
Replied by Marvin41 on topic Nixie Clock RFT Z566M
Hi Ty,

schematic of the clock or HV5622?

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4 months 1 week ago #10854 by Ian
Replied by Ian on topic Nixie Clock RFT Z566M
Totally open source hard and software:

Software: bitbucket.org/isparkes/prism-firmware/src/master/

Hardware: bitbucket.org/isparkes/prism-direct-drive-in-18/src/master/

Suffice to say, I set it up the same way: it was a software problem. I wasn't setting the PWM correctly.

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