Link incoming, if you read my guides and need additional help let me know.
These are all my own design and I wrote the guides. There's nothing really changed between the 1.4, 1.5, and 1.6 boards excet the 1.5 and 1.6 use surface mount components that offer better cooling. I have 3 Printers, and all 3 RAMPS boards between them. The biggest issue is the chinese all in one boards use JST connectors on the wires and RAMPS uses Dupont style like other Arduino products. You can buy new wires and stuff cheap or do what I did and buy connectors and crimpers.