For those following this saga, version 6.1 of the AutoQuad board is complete and has passed initial testing.  I have taken the 5.0 design and added features that should make it more flexible and expandable while increasing performance.  Here is a summary of specifications:   Hardware:   - 2" x 2.5" main board with MK mounting hole pattern - Input voltage: 6.5v => 18v - High efficiency DC/DC c…