Schematics
The SMuFF Backbone board
This is the schematic for the all new SMuFF Backbone board, which combines several components, such as Buck-Converter, Shared-Stepper Relay, I2C Servo controller and optionally a SMuFF-WI running on a Wemos D1 mini.
SMuFF-Backbone.pdfThe custom TWI/I2C display board
Here are the two versions of the TWI/I2C display board. On the left for the SKR mini V1.1, on the right for the SKR mini E3(-DIP) controllers. There are two versions because the EXP1 connector on these controller boards have different signals assigned to it.
SKR mini LCD board.pdfSKR mini V1.1
SKR mini E3 LCD board.pdfSKR mini E3 V1.2 / SKR mini E3-DIP V1.1
The SFB controller board
This is the controller board for the "Smart" version of the SFB (Revision 2). If you're just building the "standard" version (non "Smart"), you don't need this board. This PCB can be ordered directly from PCBWay.
SFB.pdfThe SMuFF mini relay board
This is the schematic for the shrunken relay board PCB as mentioned here. This PCB can be ordered directly from PCBWay.
SMuFF Relay-Board.pdfThe SMuFF-Ifc2 ESP32 board
This is the schematic for the new version of the SMuFF-Ifc. This PCB also can be ordered directly from PCBWay.
SMuFF-Ifc2-ESP32.pdfThe SMuFF ESP32 controller board prototype
Please be aware that this is a prototype only board, which was used as a proof of concept. There's no existing PCB for this prototype yet.
ESP32 Controller.pdf