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skot / bitaxe

Open source ASIC Bitcoin miner hardware
GNU General Public License v3.0
840 stars 122 forks source link

Fan and heatsink specification #75

Closed smartm0use closed 11 months ago

smartm0use commented 1 year ago

Can you add these info to README file?

skot commented 1 year ago

it's already there: https://github.com/skot/bitaxe#hardware

smartm0use commented 1 year ago

There I can read that I can buy a "40x40mm heatsink and 5V fan":

image

Then, I read "Noctua NF-A4x10 5V 4-Pin fan".

So, I deduce that I can buy a 4-Pin fan... but there is not 4-Pin fan in the Aliexpress link.

What's wrong? The link or the 4-Pin information?

smartm0use commented 1 year ago

In addition, I see that it is possible to get a fan from a random seller on Aliexpress, otherwise get a Noctua fan. I saw that Aliexpress fans has more or less the same characteristics, especially in terms of rpm and db, but costs 1/3 or even 1/4. I was wondering if I opt for a cheap fan and then maybe it spins more slowly, stops or has problems cooling, in short, if it doesn't manage to cool properly, what happens? Does the ASIC chip burn out or does some sensor come into play so bitaxe is saved?

skot commented 11 months ago

we are working on some firmware to shut down the ASIC and/or power in an over-temp situation. Currently there is no protection.

This is going to be a firmware fix, so I'll close this issue.

smartm0use commented 11 months ago

Ok, I see. Thank you for the information. What about the other questions? Is that Aliexpress link misleading?

skot commented 11 months ago

the fan that comes with the heatsink from Aliexpress is pretty bad. Several of them that I ordered didn't work at all. I highly recommend a Noctua fan.

It you want to go with a different fan, just make sure to monitor the temperature and make sure it's moving enough air over the heatsink to keep the temp at 70C or below

skot commented 11 months ago

the bitaxe is compatible with 5V fans, either 2-pin, 3-pin or 4-pin.