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skot / bitaxe

Open source ASIC Bitcoin miner hardware
GNU General Public License v3.0
916 stars 143 forks source link

Internal voltage domain bypass caps #197

Open kingovchouffe opened 2 weeks ago

kingovchouffe commented 2 weeks ago

Hello,

I'm a hardware design engineer, and the part in the schematic of the bypass caps for the internals voltages domains makes absolutely no sense electrically speaking.

Do you have documentation about the miner chip that specified this arrangement?

I am willing to help with the hardware design, this project looks very cool !

skot commented 2 weeks ago

Hey, welcome!

There is no documentation... All we have are some cryptic "repair guides" and closely looking at existing hashboards.

kingovchouffe commented 2 weeks ago

I tried to look at some documentation about those ASIC but there is not much appart those repair guides which you mentioned. My theory is that their retro engineering is wrong in the symbol pin out, but someone it works. But bypassing two DC voltages with capacitors makes nonsense to me. I'll try to find some better picture of Asics board