SKR Relay Module holder for UNI 3d printer

thingiverse

Update: New Model for SKR Relay Module v1.2 Available at Thingiverse: https://www.thingiverse.com/thing:4157233 The SKR Relay Module Holder is a custom part designed for the UNI 3D printer. It attaches to the left bearing holder's screws and requires two M3-35 screws to be replaced. The kit includes both cylindrical and conical shims that cover the screws holding the bearing holder in place. Two additional shims need to be printed. For documentation on the module, visit: https://github.com/bigtreetech/BIGTREETECH-Relay-V1.2/raw/master/BIGTREETECH%20Relay%20V1.2/BIGTREETECH%20Relay%20V1.0/Relay%20Module%20V1.0%20user%20manual.pdf A photo of the module connection is available at: https://github.com/bigtreetech/BIGTREETECH-Relay-V1.2/raw/master/BIGTREETECH%20Relay%20V1.2/BIGTREETECH%20Relay%20V1.0/Hardware/1562054442170.JPEG The printer can be turned on by pressing the + button and supplying power (Marlin setting). If USB power is provided, it can also be done via code M80. To turn off the printer, hold down the RESET button, use the display menu, enter code M81, or set temperature and time-out settings in Marlin. The module pins are numbered from left to right: 1-2: Button contacts (can be temporarily connected with a jumper for flashing the firmware) 1: +5 internal power (+5V on the built-in module's PSU) 2: Signal pin 3-5: IO2 - Power control from the board to the module (black XH connector) 3: +5 printer board (optional) 4: Ground 5: Signal pin 6-8: Monitor network status 220 from module to board (white XH connector) My Marlin2 configuration: #define PS_ON_PIN PC9 // This is the pin on the motherboard where the module is connected (the fifth pin from the left) #define PSU_CONTROL #if ENABLED(PSU_CONTROL) //#define PSU_ACTIVE_HIGH false // Set 'false' for ATX (1), 'true' for X-Box (2) #define PSU_ACTIVE_HIGH true //#define PS_DEFAULT_OFF // Keep power off until enabled directly with M80 #define AUTO_POWER_CONTROL // Enable automatic control of the PS_ON pin #if ENABLED(AUTO_POWER_CONTROL) #define AUTO_POWER_FANS // Turn on PSU if fans need power #define AUTO_POWER_E_FANS //#define AUTO_POWER_CONTROLLERFAN //#define AUTO_POWER_CHAMBER_FAN #define AUTO_POWER_E_TEMP 50 // (°C) Turn on PSU over this temperature //#define AUTO_POWER_CHAMBER_TEMP 30 // (°C) Turn on PSU over this temperature //#define POWER_TIMEOUT 30 #define POWER_TIMEOUT 120 #endif