SIB Echodrive clone: has anyone ever made one?



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Re: SIB Echodrive clone: has anyone ever made one?

Postby Velcro Bottom » Tue Nov 08, 2022 10:50 am

Ha!
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Re: SIB Echodrive clone: has anyone ever made one?

Postby digi2t » Wed Nov 09, 2022 12:11 am

We have progress progress progress progress.....

Image
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Re: SIB Echodrive clone: has anyone ever made one?

Postby ibarakishi » Wed Nov 09, 2022 6:16 am

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Re: SIB Echodrive clone: has anyone ever made one?

Postby digi2t » Wed Nov 09, 2022 10:19 am

ibarakishi wrote:Image


Not so fast there Captain Happy...

Found a few bugs that need ironing out, so we'll have to cut some new boards. Sorta in the "minor major" category, but need to be addressed. In the meantime, I'm going to try to bodge this build into a proper working unit. It's been an interesting ride so far.

But...

It does work work work work work. :)
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Re: SIB Echodrive clone: has anyone ever made one?

Postby ibarakishi » Wed Nov 09, 2022 10:39 am

Image

me excited trying to pass time while waiting after the news
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Re: SIB Echodrive clone: has anyone ever made one?

Postby imJonWain » Thu Nov 10, 2022 11:06 am

Looks good! Just curious, What did you end up deciding on for handling the different voltages and what's your main supply voltage? I can see the stepdown transformer and a regulator. Are you using the transformer "backwards" to step it up for the B+ and the regulator for the heaters?
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Re: SIB Echodrive clone: has anyone ever made one?

Postby digi2t » Fri Nov 11, 2022 9:57 am

I'm using a toroidal transformer to step up from 12vac. 12vac is common to lots of our projects, so not unfamiliar to most, and cheap to buy (much cheaper than DC adapters). I'm getting between 140 and 150 vdc on B+ loaded, which is in the same wheelhouse as the original. The same 12vac gets flipped to DC for the filament heater, as well as 5vdc further downstream for the power to the chips.

We're just sorting out some assembly and layout issues right now, so it'll be a few more weeks before we can say "yay" or "nay" to the whole thing. Phil is in the process of tweaking the layout for new boards. What I have now does indeed work, but it's far from something that I would throw to the masses as is.

Not the cheapest build. The transfo alone goes for close to $30 (in my neck of the woods), and they don't give the echo and memory chips away either. But, considering the market price of an Echodrive... yeah, worth it!
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