Sapphire Plus comes with TMC2208 drivers but they are configured in standalone mode. It means they are locked in StealthChop mode and you have to physically adjust a potentiometer on the drivers to change motor current. However only with a little bit of soldering you can enable more advanced serial (aka UART) mode. I think this upgrade had very little attention because most people just upgrade the stock mainboard to something that’s UART capable out of the box. You don’t need a sophisticated board when you use Klipper so I would recommend this mod and keep the board.

TwoTrees Sapphire Plus (SP-5) comes with Marlin based firmware which I found quite inconvenient to use. My main complaint was that I had to recompile and reflash the firmware every time I changed my printer configuration. I decided to throw it away and switch to Klipper instead.

I’ve been looking at 3D printers for a while now and I finally decided it’s time to get one and see if they are as useful as one may think. In this post I’m going to explain the reasons why I decided that TwoTrees Sapphire Plus was the best choice for me.