Antminer S5, Spondoolies SP20 or 3 x Antminer S3?

[Moria843]

Well that is definitely a version of S3 I have never seen before. Have you tried the firmware version that allows voltage adjustment from cgminer to see if it responds to that. It still had Buck converters but there are trio's of chips on each one. Can you take a picture just of the top of the board where the components are such that the component markings can be read?

I see the ident says V1.0 so am assuming it is an early S3?

Rich

Here are some close up pics where you can read the markings.

[RichBC]

I can't find the spec on the Digi+ VRM AGP1209, however the Digi+ VRM ASP1212 is a programmable Multiphase Buck Controller. So I think you have found the elusive programmable S3. In which case it should respond to voltage programming from cgminer so long as you have a firmware version that supports it.

Am not certain which version you need so some experimentation may be needed. versions to try are.

140826 141013 141024 141126 141219

Be careful with 141024 as this is the one where the reset button does not work

Rich

[Moria843]

Thanks Rich,

I am using Kano's latest that has a voltage setting in the advanced tab of miner config. But, I'm not sure if I'm inputting the values correctly. See link below where I'm going to continue this thread in hopes of also getting input from Kano and some others on software questions. I think continuing in the topic below will give it better visibility.

https://bitcointalk.org/index.php?topic=671189.msg12230103#msg12230103