The AVR Miner Board acts as a slave in the Duco Miner Rack. Multiple such boards, connect parallelly with each other & the master via the I2C bus and execute the job allotted by the Master.
You can get the PCBs / Boards manufactured from PCBWay. Check this out for the Gerber Files/ Fabrication: https://www.pcbway.com/project/sharep...
Check out the complete Instructables Post at: https://www.instructables.com/Crypto-...
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