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General| Main Control Chip | STM32F103RCT6 |
|---|---|
| Microcontroller | STM32F103RCT6 |
| Connectivity | USB, SD Card |
| Heated Bed Output | 1 |
| Thermistor Inputs | 3 |
| Architecture | 32-bit |
| Logic Voltage | 3.3V |
| Motor Driver Interface | UART |
| Temperature Sensor Interface | Thermistor |
| PC Communication Interface | USB |
| Supported File Format | G-code |
| Mounting Hole Size | M3 |
| Number of Drivers | 4 |
| Processor | ARM Cortex-M3 |
| Step Motor Drivers | TMC2209 |
| Input Voltage | 12V-24V |
| Firmware | Marlin |
| Endstop Inputs | 6 |
| Display | LCD12864 |
| Automatic Bed Leveling Sensor | Supported |
| Motor Output Current | Up to 1.2A per motor |
| Fan Output Current | 1A max |
| Fan Ports | 3 (1x CNC fan, 2x normal fans) |
Highlights the main features and advancements of the BTT SKR MINI E3 V3.0 motherboard.
Details the status and function of various LEDs on the motherboard for diagnostics.
Explains how the motherboard communicates with a PC and other host devices via USB.
Provides a detailed dimensional diagram of the motherboard's physical layout and connector placement.
Illustrates the physical connections for all components to the motherboard's various ports.
Details how to enable and configure sensorless homing using jump caps on specific axes.
Explains powering BLtouch, TFT, and RGB interfaces with onboard or external 5V sources.
Instructions for connecting a cooling fan to the motherboard's FAN2 port for system cooling.
Guide for connecting the BTT Relay V1.2 module to the motherboard for power control.
Instructions for connecting the BTT UPS 24V V1.0 power module to the motherboard.
Details how to connect a Neopixel LED strip to the motherboard for lighting effects.
Guide for wiring the BL Touch auto-leveling sensor to the motherboard's interface.
Information on how to obtain the necessary firmware files for the motherboard.
Step-by-step instructions for updating the motherboard's firmware using an SD card.
Important warnings and notes regarding firmware file naming and update procedures.
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