Post
Topic
Board Hardware
Re: Block Erupter Prisma (>=1.4 T/device, 0.75-0.78 W/G, <1 BTC/T, October Shipping)
by
praeluceo
on 18/11/2014, 19:28:26 UTC
So has anyone actually gotten these to work on a standard Linux machine yet? I keep getting the "Unexpected value 00 received" error. I've tried different git branches suggested in previous posts. I've re-cabled this in various ways also with no success.

I have a Pi somewhere I will try to repurpose for this if that is what it takes.

Try their cgminer branch which got updated recently.
https://github.com/blockerupter/cgminer

If this doesn't affect hash rate(around 350GH/s per board), just ignore this kind of error. I got several boards with occasional errors like this, yet all works well.

Thanks, I downloaded that branch again and tried it, but same issue. I never get any hashing and I've even tried each board individually.

Most likely a bad USB adapter..pretty common. I had the exact same issue and sold my Prisma off to someone with a BE Controller, and it worked for him. If you do not have another controller you need to find one or sell that crap miner off.

Has anyone had any success at getting additional USB adapters? I've sent emails to Phasebird, and PMs here, but no support whatsoever. It's like ASICMiner went bankrupt over the past month and entirely disappeared off the face of the earth.

We have really late miners here, and we really need support. That, or has anyone tried using a regular USB to UART adapter? I see the Prisma ones are 3 PINs, are these specific serial or I2C pins that we could use another device to talk to the miner over? I haven't looked closely to see if they have a visible USB FTDI (or knockoff) chip on it, but if so it'd at least be a step in the right direction.