So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

Hi All,

My first 2 of 3 Prismas showed up at my office on Thursday.  I had one of my drivers bring one home to me to play with this weekend and here are my initial reactions to the device.

1. Device itself.
a. BIG
b. Pretty, (Geeky way, Sci-Fi fan and all)
c. Functionality:
One of the handles is a little bent in but that only made it a bit difficult to connect a PSU connecter.  The Dip switches being where they are will make setting the next one in the chain up interesting.  Speaking of that where is the chart on the switches?

2. Software Setup / USB device
I am using the USB dongle, as the current software for the Controller Box does not work with most pools

a. CGminer
After figuring out that the Debian build of CGminer was broken (long story).  I was able to get the unit to work somewhat.  I was getting a lot of "Unexpected Response 00 from BET 0" and "Sync Error"  I am not sure what is causing this as the solution was several power cycling of the miner and unplugging the USB device from the computer.

b. BFGminer
I built a custom 4.10.0 build of BFGminer but was not able to get it to detect the Prisma at all.  I tried several things without results.  Will have to look into this more.

3. Powering
a. Don't even bench test with less then a 1300W PSU.  I had a 1000W PSU I thought I could use on the bench for short power up tests and minor 10 minutes bursts of mining.  No it did not work.  Thank god for protection circuits or that sucker would have been a goner.

b. Using Dual PSUs, there may be a sequencing thing that is needed to be done with the boards.  I have not proven this yet.  I am still testing to see if this is what causes the errors mentioned above.

I don't think you need to worry at this moment. Maybe later.

That's a review unit for some publicist. That shouldn't count. Customer units should count!

For those who care.

I am working on building the CubieTruck A20 image for use with the Block Erupter Tube / Prisma.

Here is the update of where I am:

1. Using the Cubean build system from http://www.igorpecovnik.com/2013/12/24/cubietruck-debian-wheezy-sd-card-image

2. SD Card image will be built with cgminer (latest).

As soon as I have a working image I will post w/ md5 sums

The mentioned video was about assembling a Tube, not about the Prisma, but it gave some hints on what to expect, after all, the Prisma pretty much is nothing else than a longer already assembled Tube (besides the technical advances).