4 layers221.5 × 130.8 mm
MEP MAXI-85V-1-REV-2-Interface Board
JGilcreast/MetalHead
An opensource firmware and software drop-in replacement for the 85V Automatic Stirrup Bender by CRS Specialties Inc. ...short story behind the name...
407 parts
2 layers100 × 80 mm
Traction hub
davidmlr/traction-hub1ESC Design with STM32
- Size
- 100 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 93
- Nets
- 100
- Pads
- 397
- Tracks, vias
- 790, 224
- Pours
- 18
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Jun 2024
- Updated
- 3 Nov 2026
Overview
Traction hub is an open-source printed circuit board by davidmlr, from the davidmlr/traction-hub repository on GitHub. It is a 2-layer board of 100 × 80 mm with 93 parts on 100 nets, routed with 790 tracks and 224 vias.
It is built around the DRV8302DCA, TC2117-3.3VDBTR and USBLC6-2SC6, with the IRFR7540TRPBF and SMBJ30CA among its other parts. Its parts include 35 resistors, 29 capacitors, 6 transistors, 6 connectors and 5 ICs. It belongs with the STM32 boards of this library.
Main components
5
DRV8302DCA
HTSSOP-56-6mm-40℃~+125℃ 1.7A 2.3A 25ns 25ns 8V~60V MOSFET Three Phase Under Voltage Protection、Over Voltage Protection、Over Current Protection、Overtemperature protection (OTP) HTSSOP-56-6mm Gate Drivers ROHSTexas InstrumentsBrushless DC (BLDC) Motor Driver
TC2117-3.3VDBTR
SOT-223-40℃~+125℃@(Tj) 1 3.3V 450mV@(800mA) 55dB@(1kHz) 6V 800mA 80uA Fixed Over Current Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
IRFR7540TRPBF
DPAK(TO-252AA)-55℃~+175℃ 1 N-channel 140W 260pF 3.7V 4.36nF 4.8mΩ@10V 410pF 60V 86nC@10V 90A N-Channel DPAK(TO-252AA) MOSFETs ROHSInfineon TechnologiesMOSFETs
SMBJ30CA
SMB(DO-214AA)-55℃~+150℃ 12.4A 1uA 30V 33.3V 48.4V 600W@10/1000us Bidirectional TVS SMB(DO-214AA) ESD and Surge Protection (TVS/ESD) ROHSDOWOESD And Surge Protection (TVS/ESD)
README
README.mdtraction-hub
ESC contrlled with stm32
Parts
93| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C8, C9, C10, C11, C12 |
| 6 | 2k2 | Resistor_SMD:R_0603_1608Metric | R15, R17, R19, R33, R34, R35 |
| 6 | 2u2 | Capacitor_SMD:C_0603_1608Metric | C3, C6, C17, C18, C19, C20 |
| 6 | 39k | Resistor_SMD:R_0603_1608Metric | R14, R16, R18, R26, R27, R28 |
| 6 | 4R7 | Resistor_SMD:R_0603_1608Metric | R20, R21, R22, R23, R24, R25 |
| 6 | IRFR7540TRPBF | Package_TO_SOT_SMD:TO-252-2 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 4 | 100R | Resistor_SMD:R_0603_1608Metric | R10, R11, R12, R13 |
| 4 | 100uF | tractions_symbols:865080545012 | C13, C14, C15, C16 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_4.3mm_M4_Pad_Via | H1, H2, H3, H4 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R30, R31, R32 |
| 3 | 220n | Capacitor_SMD:C_0603_1608Metric | C21, C22, C23 |
| 3 | 4n7 | Capacitor_SMD:C_0603_1608Metric | C29, C30, C31 |
| 2 | 2n2 | Capacitor_SMD:C_0603_1608Metric | C27, C28 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R6, R7 |
| 2 | R_Shunt | tractions_symbols:besser | R5, R29 |
| 1 | 100u / 6.3V | tractions_symbols:865080142007 | C4 |
| 1 | 10k | Capacitor_SMD:C_0603_1608Metric | R4 |
| 1 | 10u/50V | Capacitor_SMD:C_1206_3216Metric | C24 |
| 1 | 150R | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 1M | Capacitor_SMD:C_0603_1608Metric | R9 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 1uH/24A | tractions_symbols:7443320100 | L1 |
| 1 | 220u/10V | tractions_symbols:865080545012 | C2 |
| 1 | 22n/50V | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 24Mhz | tractions_symbols:better_crystal | Y1 |
| 1 | 4k7 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 5R1 | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 600R @ 100MHz | Resistor_SMD:R_0603_1608Metric | FB2 |
| 1 | 7 -28 Vin 5 Vout | tractions_symbols:173950578 | U1 |
| 1 | Conn_01x03 | tractions_symbols:cooler | J4 |
| 1 | Conn_01x05 | Connector_JST:JST_EH_B5B-EH-A_1x05_P2.50mm_Vertical | J1 |
| 1 | Conn_01x06 | Connector_JST:JST_EH_B6B-EH-A_1x06_P2.50mm_Vertical | J6 |
| 1 | Conn_ARM_SWD_TagConnect_TC2030 | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J2 |
| 1 | D | Diode_SMD:D_MiniMELF | D2 |
| 1 | DRV8302DCA | tractions_symbols:SOP50P810X120-57N | IC1 |
| 1 | LED_GREEN | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | LED_YEL | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MAIN_PWR_CON | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J3 |
| 1 | SMBJ30CA | tractions_symbols:SMBJ33CA-824521331 | D3 |
| 1 | STM32G431CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | TC2117-3.3VDBTR | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J5 |
The 92 most common of 93 parts.
Questions
How big is the Traction hub PCB?
It measures 100 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Traction hub use?
93 parts, built around the DRV8302DCA, TC2117-3.3VDBTR, USBLC6-2SC6 and IRFR7540TRPBF. 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 Traction hub KiCad files?
From the davidmlr/traction-hub repository on GitHub, at the commit this page was made from: the board is pcb/TractionHub.kicad_pcb and its schematic pcb/TractionHub.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Traction hub design in my own project?
Its repository states no licence, so its author keeps all rights: ask davidmlr before reusing the design.
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