Setup your Raspberry Pi as mining device controller. You can always start with a few and then add extra systems if needed, again you should have no problems driving up to 25 systems through the GPIO pins of the RPi 3. A pie chart showing the hashrate distribution between the major bitcoin mining pools - Blockchain.
8 Feb 2016 Avalon 6 Bitcoin Miner Specifications. Avalon 6 Main Control Panel. HASHRATE: 3.5TH/s ±5% POWER EFFICIENCY: 0.29 Watts/GH at the wall averaged 1080 watts total during testing The Avalon 6 like the Avalon 4 uses an RPi (Raspberry Pi) for the controller software. They have a custom control panel