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Description
3D printer motherboard based on STM32F103RE. Power supplay 12-24V
Contains:
1) 5 stepper drivers (X,Y,Z, two extruders)
2) Heatbed output
3) 2 heaters
4) 6 connector for axis limits switch
5) Connector for BlTouch
6) Connectors for I2C display, SPI, parallel display
7) Connector for filament detector
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | DRV8825 | U2,U3,U4,U5,U6 | DRV8825 | 5 |
| 2 | XH-4AK M | E1,Z1,Z2,E2,X,Y,Z | XH-4A | 7 |
| 3 | DIP switch,Dip Switch,DSWB03LHGET | MICROSTEPS | DSWB03LHGET | 1 |
| 4 | Hotbead | LED1 | LED-0805 | 1 |
| 5 | Extruder1 | LED2 | LED-0805 | 1 |
| 6 | Extruder2 | LED3 | LED-0805 | 1 |
| 7 | Fan | LED4 | LED-0805 | 1 |
| 8 | XH-2A black RHOS | FAN1,TBED,FAN2,+5V,+3.3V,TEXTR1,TEXTR2 | XH-2A | 7 |
| 9 | KF301-2P | EXTRUDER1,EXTRUDER2 | KF301-2P | 2 |
| 10 | XH-3A | XMIN,YMIN,ZMIN,XMAX,YMAX,ZMAX,FILAMENT | XH-3A | 7 |
| 11 | KF129-5.08 | HEATBED,POWER | KF129-5.08 | 2 |
| 12 | Header-Male-2.54_1x4 | I2C,UART | 210S-1X4P | 2 |
| 13 | Header-Male-2.54_1x2 | BLTOUCH2 | HDR-2X1/2.54 | 1 |
| 14 | Header-Male-2.54_1x3 | BLTOUCH1 | HDR-3X1/2.54 | 1 |
| 15 | 100nF | C12,C13,C14,C15,C16,C7,C4,C5,C6,C8,C29,C36,C23,C24,C25,C26,C19,C28,C32,C33,C38 | C0603 | 21 |
| 16 | 49S8M | Y1 | HC49US | 1 |
| 17 | 22pF | C11,C20 | C0603 | 2 |
| 18 | STM32F103RCT6 | U1 | LQFP64-0.5-10X10MM | 1 |
| 19 | 10KΩ | R19,R21,R1,R2,R3,R29 | 0603 | 6 |
| 20 | 10UF-6.3V-20%(0603) | C22 | 0603-CAP | 1 |
| 21 | BOOT0 | BOOT0 | H3-2.54 | 1 |
| 22 | 10 | R20,R7,R10,R12 | 0603 | 4 |
| 23 | 100K | R4,R9,R8,R13 | 0603 | 4 |
| 24 | 3.3K | R5,R6,R11,R14,R24 | 0603 | 5 |
| 25 | 4.7K | R15,R16,R17,R27,R28 | 0603 | 5 |
| 26 | 10uF | C9,C10,C18 | 0603 | 3 |
| 27 | LM2596R-5.0 | U7 | TO-263-5 | 1 |
| 28 | AMS1117-3.3 | U8 | SOT-223 | 1 |
| 29 | 22 | R22,R18 | 0603 | 2 |
| 30 | 1.5K | R25 | 0603 | 1 |
| 31 | 220uF | C31 | CAP-D6.3XH5.5 | 1 |
| 32 | 470uF | C34 | CAP-D12.5XH13.5 | 1 |
| 33 | SS54 | D1 | SMB(DO-214AA) | 1 |
| 34 | 100uF | C35,C17,C1,C2,C3,C30 | CAP-D6.3XH7.7 | 6 |
| 35 | Power | LED5 | LED-0805 | 1 |
| 36 | USB-B-Female-TH_C46393 | USB1 | USB-M-49 | 1 |
| 37 | 100uF | C27 | CAP-D6.3XH5.5 | 1 |
| 38 | Up | SW1 | KEY-6.0*6.0 | 1 |
| 39 | Header-Male-2.54_1x5 | SWD | DIP-1X5P-2.54MM-M | 1 |
| 40 | Micro SD Card Holder; | J1 | MICRO-SD9+4P-SMD-16.1X14.5X1.85MM | 1 |
| 41 | 47K | R23,R26,R30,R31,R32 | 0603 | 5 |
| 42 | HDR-IDC-2.54-2X5P | EXP1,EXP2 | HDR-IDC-2.54-2X5P | 2 |
| 43 | 47uH | L5 | SMD-10.0X10.0-10A50 | 1 |
| 44 | 1N4148W | D5 | SOD-123 | 1 |
| 45 | IRLR8743TRPBF | Q2,Q1,Q3,Q4 | TO-252-2-COLD | 4 |
| 46 | LM2940G-12V-AA3-R | U9 | SOT-223 | 1 |
| 47 | IR4427STRPBF | U10,U11 | SOIC-8_150MIL | 2 |
| 48 | 47uF | C21 | C0603 | 1 |
| 49 | 100uH | L1 | AXIAL-0.5 | 1 |
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