2 layers95.7 × 71.9 mm/extention_board.kicad_pcb.jpg?size=s&soon)
Extention board
wargod1029/PCB-design
Brief - Dual brushed motor driver board using BTS7960b half bridge IC. Designed for large power motor (24V, 15A)
135 parts
4 layers76.9 × 70.3 mm
STC mainboard
wargod1029/PCB-designBrief - Dual brushed motor driver board using BTS7960b half bridge IC. Designed for large power motor (24V, 15A)
- Size
- 76.9 × 70.3 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 175
- Nets
- 195
- Pads
- 647
- Tracks, vias
- 770, 106
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 2 Jun 2025
- Updated
- 21 Aug 2026
Overview
STC mainboard is an open-source printed circuit board by wargod1029, from the wargod1029/PCB-design repository on GitHub. It is a 4-layer board of 76.9 × 70.3 mm with 175 parts on 195 nets, routed with 770 tracks and 106 vias.
It is built around the LMV321-L, FD6288Q and TPS54360DDA, with the LM1117-3.3V, SS54 and TPN2R703NL,L1Q(M among its other parts. Its parts include 57 resistors, 45 capacitors, 20 diodes, 16 connectors and 13 ICs. It belongs with the computers and single-board computers boards of this library.
Main components
8
LMV321-L
SOT-23-5SOT-23-5 Operational Amplifier ROHSPIELENSTOperational Amplifier
FD6288Q
QFN-24-EP(4x4)-40℃~+125℃ 1.5A 1.8A 100ns 12ns 12ns 2.7V 3 300ns 330uA 5V~20V 800mV IGBT、MOSFET Three Phase Under Voltage Protection QFN-24-EP(4x4) Gate Drivers ROHSFortior TechGate Drivers
TPS54360DDA
SOIC-8-EP-40℃~+150℃@(TJ) 1 146uA 2.5MHz 3.5A 4.5V~60V 800mV~58.8V Adjustable Buck Buck Built-in No SOIC-8-EP DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
LM1117-3.3V
SOT-89SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorised
SS54
SMA(DO-214AC)-55℃~+125℃ 1mA@40V 40V 550mV@5A 5A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
TPN2R703NL,L1Q(M
TSON-81 N-channel 1.3V 1.6nF 21nC@10V 3.3mΩ@4.5V 30V 42W 53pF 890pF 90A N-Channel TSON-8 MOSFETs ROHSToshibaMOSFETs
1N5819W
SOD-12313A 350mA 40V 5uA@30V 600mV@200mA Standalone SOD-123 Schottky Diodes ROHSJSMSEMISchottky Diodes
S8050
SOT-23-55℃~+150℃ 1 NPN 100MHz 100nA 120 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
README
dual_motor_driver/readme.mddual_motor_driver
Brief
- Dual brushed motor driver board using BTS7960b half bridge IC. Designed for large power motor (24V, 15A)
Key features
- Two-channel motor drive
- PWM speed control for both motors
Repository structure
motor_driver_2.kicad_pcb— PCB layoutmotor_driver_2.kicad_sch— Schematicmotor_driver_2.kicad_pro— KiCad project file
Electrical overview (fill with measured values)
- Supply voltage: <12–24 V>
- Recommended motor current limit: <15A>
Connectors & pins
- POWER: VIN, GND,
- MOTOR A: M1+, M1-
- MOTOR B: M2+, M2-
- CONTROL:
PWM_1A,PWM_1B,PWM_2A,PWM_2B,EN1,EN2
Fabrication notes
- PCB thickness: 1.6 mm
- Layer count: 2
- Copper thickness: 1 oz external
BOM
- Use KiCad's BOM export (
bomplugin) KiCad / development notes - KiCad version used: 8.0
Designer
- Andy, Cheung
Parts
175| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 100nF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C1, C10, C11, C13, C17, C18, C19, C20, C25, C26, C27, C28, C30, C31, C32, C33 +8 |
| 10 | SS54 | Library:D_SOD-323F | D5, D6, D7, D8, D9, D10, D11, D18, D19, D24 |
| 8 | 100R | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R1, R2, R17, R20, R23, R30, R37, R53 |
| 8 | 1k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R41, R42, R44, R45, R47, R48, R59, R60 |
| 8 | 5.1k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R18, R21, R27, R31, R38, R40, R43, R46 |
| 6 | 4.7R | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R29, R32, R33, R34, R35, R39 |
| 6 | TPN2R703NL_L1Q | TPN2R703NL:TSON Advance_TOS | Q2, Q3, Q4, Q5, Q6, Q7 |
| 5 | 100k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1, RV2, RV3, RV4, RV5 |
| 5 | 1nF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C12, C14, C21, C22, C23 |
| 5 | 51k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R11, R19, R22, R28, R36 |
| 5 | 6.2k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R10, R12, R24, R25, R26 |
| 5 | LMV321?_ | LMV321__:SC70-5L | IC4, IC7, IC8, IC9, IC10 |
| 5 | SW_Push | HKUST_RDC2024_Footprint_Lib:SW_Push | SW1, SW2, SW3, SW4, SW6 |
| 4 | 1.5K | HKUST_RDC2025_Footprint_Lib:R_0603_1608Metric | R4, R8, R9, R49 |
| 4 | LED1 | HKUST_RDC2025_Footprint_Lib:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2, D3, D4, D15 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2_ISO7380 | H1, H2, H3, H4 |
| 4 | WirePad | China5.0:WirePad_motor | J7, J11, J20, J21 |
| 3 | 1N5819W | Diode_SMD:D_SOD-123 | D12, D13, D14 |
| 3 | 4.7uF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C35, C36, C37 |
| 3 | WirePad | China5.0:WirePad | J3, J8, J13 |
| 2 | ${VALUE} | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | P1, P2 |
| 2 | 0R | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R7, R52 |
| 2 | 10k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R14, R55 |
| 2 | 10uF | HKUST_RDC2025_Footprint_Lib:C_0603_1608Metric | C15, C16 |
| 2 | 10uF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C8, C40 |
| 2 | 2.2uF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C2, C3 |
| 2 | 22uF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C39, C41 |
| 2 | 47uF | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C51, C52 |
| 2 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J10, J12 |
| 2 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J5, J6 |
| 2 | MM3Zxx | Diode_SMD:D_SOD-323F | D21, D22 |
| 2 | ~ | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U8, U9 |
| 1 | 0R | HKUST_RDC2025_Footprint_Lib:R_0603_1608Metric | R16 |
| 1 | 10.2k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R6 |
| 1 | 1000uF | Capacitor_SMD:CP_Elec_4x5.3 | C9 |
| 1 | 10K | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R51 |
| 1 | 10R | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R15 |
| 1 | 162k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R3 |
| 1 | 22uH | HKUST_RDC2024_Footprint_Lib:L_7.3x7.3_H3.5 | L1 |
| 1 | 300R | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R54 |
| 1 | 35V 470uF | Capacitor_SMD:CP_Elec_4x5.3 | C50 |
| 1 | 39F | HKUST_RDC2024_Footprint_Lib:C_0603_1608Metric | C6 |
| 1 | 4,7k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R13 |
| 1 | 47K | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R50 |
| 1 | 53.6k | HKUST_RDC2024_Footprint_Lib:R_0603_1608Metric | R5 |
| 1 | BEEP | 龙芯LS2K0300主板V2.0:BEEP 9x5.5mm | B1 |
| 1 | Conn_01x02 | Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical | J4 |
| 1 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J14 |
| 1 | Conn_01x04 | HKUST_RDC2024_Footprint_Lib:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | PB12_1 |
| 1 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | FD6288Q | DRV8701PRGER:QFN50P400X400X100-25N | U6 |
| 1 | LM1117-3.3V | HKUST_RDC2025_Footprint_Lib:SOT-223 | U4 |
| 1 | LSM6DSRTR | Library:LGA-14L_2P5X3X0P83_STM | U3 |
| 1 | S8050 | 龙芯LS2K0300主板V2.0:SOT-23 | Q1 |
| 1 | SS54 | HKUST_RDC2024_Footprint_Lib:D_SMA | D1 |
| 1 | STC16H40K128_CoreBoard | STC:STC16F40K128_CoreBoard | U1 |
| 1 | STC32G12K128-48PIN | Package_QFP:LQFP-48_7x7mm_P0.5mm | U7 |
| 1 | TPS54360DDA | Package_SO:TI_SO-PowerPAD-8_ThermalVias | U2 |
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Questions
How big is the STC mainboard PCB?
It measures 76.9 × 70.3 mm and has 4 copper layers, 1.6 mm thick.
What parts does the STC mainboard use?
175 parts, built around the LMV321-L, FD6288Q, TPS54360DDA and LM1117-3.3V. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the STC mainboard KiCad files?
From the wargod1029/PCB-design repository on GitHub, at the commit this page was made from: the board is EM_line_follower_2026/STC_mainboard_2026/STC_mainboard_V2 (BLDC)/STC_mainboard.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the STC mainboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask wargod1029 before reusing the design.