Thread by @BigCohoo

Introducing the #BrownBox. Made with low quality materials found throughout the garage!

@SGBarbour's #BlackBox now comes in 2 different colors and trim packages!
👇

1/ Inspired by @SGBarbour's #BlackBox we built our own version to dampen the noise of a S19 bought from our friendly neighborhood @RoninMiner

https://twitter.com/SGBarbour/status/1440068890634059778?s=20

2/ This design is open source and Steve has welcomed those to make their own. For our case we used materials around the garage and followed this helpful guide put together by @BikesandBitcoin.

bikesandbitcoin.substack.com/p/ep015-mining…

3/ The set up has only been running for a few days now but it has greatly dampened the noise of the S19.

The trick is in the carpeted "maze" style design. The multiple surfaces absorb the noise as it travels through the box.

4/ Equally important and more interesting is the barrier between the inlet and exhaust fans of the miner which is essential for air flow.

5/ Adding the barrier creates a pressure difference between the two sides of the miner. The Fans pull air through the miner and create a low pressure at the inlet and a high pressure at the outlet.

6/ The Air naturally wants to stabilize pressure with the atmosphere due to Bernoulli's equation. The pressure imbalance pulls air into the box and forces it out more aggressively than the fans could do alone.

Greater airflow means greater heat transfer (cooling).

7/ The Black box is a pretty simple but genius design which:
1. Reduces noise through the maze and carpet
2. Increases airflow through pressure delta
3. Protects miner with sexy shell

8/ The barrier technique is used by many mining operations at scale and can be observed in this video from @RiotBlockchain where they display their "hot aisle".

https://twitter.com/peej_marlowe/status/1451695169196199944?s=20

9/ Looking forward to seeing more trim packages of the #BlackBox out in the wild as well as and other creative solutions to bring ASIC miners, quietly, into residential homes!