2 layers210 × 125 mm
Controller bldc
david8128/Electeam-Sharky
Firmware designed in ESP32 DEVKIT microcontroller where motor, throttle, breaks, Nextion touch screen and more systems are integrated.
73 parts2GPL-3.0
4 layers127.3 × 73 mm
Speed controller
rkleva/Low-Power-Inverter-STM32- Size
- 127.3 × 73 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 179
- Nets
- 108
- Pads
- 555
- Tracks, vias
- 1,148, 228
- Pours
- 20
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Nov 2025
- Updated
- 7 Nov 2025
Overview
Speed controller is an open-source printed circuit board by rkleva, from the rkleva/Low-Power-Inverter-STM32 repository on GitHub. It is a 4-layer board of 127.3 × 73 mm with 179 parts on 108 nets, routed with 1,148 tracks and 228 vias.
It is built around the STM32G474CET3, IR2103PBF and OPA374M/TR, with the LMR36510ADDA, OPA2374M/TR and MIC5235YM5-TR among its other parts. Its parts include 64 capacitors, 57 resistors, 14 connectors, 12 ICs and 8 diodes. It belongs with the STM32 boards of this library.
Main components
9
STM32G474CET3
LQFP-48(7x7)-40℃~+125℃ 1.71V~3.6V 128KB 12bit 12bit 170MHz 32 Bit 38 512KB ARM Cortex-M4F Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
IR2103PBF
PDIP-8-40℃~+150℃ 100ns 10V~20V 130mA 150uA 2 270mA 50ns Half-Bridge IGBT、MOSFET Interleaved conduction protection、Dead-time control PDIP-8 Gate Drivers ROHSInfineon TechnologiesGate Drivers
OPA374M/TR
SOP-8-2.75V~-1.05V、1.05V~2.75V -40℃~+125℃ 1 13nV/√Hz@1kHz 1pA 1pA 2.1V~5.5V 2.4uV/℃ 3.5mV 4.2V/us 470uA 53mA 6MHz 90dB Rail-to-Rail Input, Rail-to-Rail Output SOP-8 Operational Amplifier ROHSHGSEMIOperational Amplifier
LMR36510ADDA
SOP-8-EP-40℃~+125℃@(TJ) 1 1A 1V~61.75V 26uA 4.2V~65V 400kHz Adjustable Buck Buck Built-in Yes SOP-8-EP DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersOPA2374M/TR
SOP-8-2.75V~-1.15V、1.15V~2.75V -40℃~+125℃ 0.5pA 10nV/√Hz@10kHz 10pA 2 2.3V~5.5V 53mA 585uA 5V/us 5mV 6.5MHz 6.5uV/℃ 90dB Rail-to-Rail Input, Rail-to-Rail Output SOP-8 Operational Amplifier ROHSHGSEMIOperational Amplifier
MIC5235YM5-TR
SOT-23-5-40℃~+125℃@(Tj) 1 1.24V~20V 150mA 18uA 24V 310mV@(150mA) Adjustable Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
NUP4202W1
SC-88-40℃~+125℃ 1.5pF、3pF 14.5V 28A@8/20us 500W 5V 5uA 6V ESD IEC 61000-4-2 SC-88 ESD and Surge Protection (TVS/ESD) ROHSonsemiESD And Surge Protection (TVS/ESD)
TXB0106PW
TSSOP-16-40℃~+85℃ 1 1.2V~3.6V 1.65V~5.5V 100Mbps 6 Auto Direction Detection Bidirectional CMOS CMOS Tri-State TSSOP-16 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level ShiftersMMBZ33VZ-LSYL
DFN1006BD-2DFN1006BD-2 ESD and Surge Protection (TVS/ESD) ROHSNexperiaUncategorised
Parts
179| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15, R16, R17, R18, R19, R20, R49, R50, R51, R54, R55, R56 |
| 9 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C6, C20, C25, C26, C27, C29, C31, C36 |
| 9 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C43, C56, C57, C58, C59, C61, C62, C63, C64 |
| 8 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C15, C17, C19, C34, C37, C42, C55, C60 |
| 7 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13, R14, R41, R46, R47, R48, R52 |
| 6 | 10R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5, R7, R8, R10, R11 |
| 6 | 16.5k | Resistor_SMD:R_0805_2012Metric | R21, R22, R23, R24, R25, R26 |
| 6 | 1n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C48, C49, C50, C51, C52, C53 |
| 6 | Conn_01x01_Pin | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical | J8, J9, J10, J11, J12, J13 |
| 6 | NMOS | Speed_controller_footprints:TO-252-2 - custom | Q1, Q2, Q3, Q4, Q5, Q6 |
| 6 | TestPoint | Speed_controller_footprints:5117 - test_point | TP1, TP2, TP4, TP5, TP6, TP7 |
| 5 | 50k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R30, R31, R32, R39 |
| 4 | 2.2u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C21, C32, C40, C41 |
| 4 | 220u | Speed_controller_footprints:CAPPRD500W62D1000H1750_dc_link | C1, C2, C3, C4 |
| 4 | 6.73k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R33, R34, R35 |
| 4 | LED | Speed_controller_footprints:Green_LED | D5, D6, D7, D8 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 0.01R | Speed_controller_footprints:RESC6434X90N - current_sense | R6, R9, R12 |
| 3 | 1000p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C16, C18 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C9, C10 |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12, C13 |
| 3 | 2200p | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C22, C23, C24 |
| 3 | 4u7 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C28, C30, C54 |
| 3 | 51 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R27, R28, R29 |
| 3 | D_Schottky | Speed_controller_footprints:B150Q13F - schottky diode | D2, D3, D4 |
| 3 | IR2103 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3, U4 |
| 3 | ~ | Speed_controller_footprints:Phase_Connect_AWG14 | J3, J4, J5 |
| 2 | 22u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C38, C39 |
| 2 | 2376591-2 | Speed_controller_footprints:23765912 | J1, J2 |
| 2 | 5.1p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C44, C45 |
| 2 | 6.8p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C46, C47 |
| 2 | opa374 | Speed_controller_footprints:SOIC127P600X175-8N - opa374 | U6, U7 |
| 1 | 0.01u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 1 | 0.22u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C33 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R53 |
| 1 | 1.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R45 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R36 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C35 |
| 1 | 130R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R43 |
| 1 | 16-pin-molex | Speed_controller_footprints:16-pin-molex-minifit-jr | J6 |
| 1 | 22u | Speed_controller_footprints:inductor_22u | L1 |
| 1 | 24.9k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R37 |
| 1 | 24MHz | Speed_controller_footprints:24MHz | Y1 |
| 1 | 2k2 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R57 |
| 1 | 3.3R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3 |
| 1 | 3.3k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R38 |
| 1 | 47R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R42 |
| 1 | 820R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R44 |
| 1 | 8A | Speed_controller_footprints:Fuse_8A | F1 |
| 1 | Conn_01x03_Pin | Connector:FanPinHeader_1x03_P2.54mm_Vertical | J14 |
| 1 | Conn_02x10_Odd_Even | Connector_IDC:IDC-Header_2x10_P2.54mm_Vertical | J7 |
| 1 | Crystal | Speed_controller_footprints:NX3215SA32768KSTDMUA14 | 32.768kHz1 |
| 1 | LMR36510ADDA | Package_SO:Texas_HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | U9 |
| 1 | LOGO | Speed_controller_footprints:zesa | G*** |
| 1 | MIC5235YM5-TR | Speed_controller_footprints:SOT95P280X145-5N | U10 |
| 1 | MMBZ33VZ-LSYL | Speed_controller_footprints:MMBZ33VZLSYL - ESD | D1 |
| 1 | NCV4274CST33T3G | Speed_controller_footprints:SOT230P700X175-4N | U8 |
| 1 | NTC 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R40 |
| 1 | NUP4202 | Package_TO_SOT_SMD:SOT-363_SC-70-6_Handsoldering | U1 |
| 1 | STM32G474CET3 | Speed_controller_footprints:stm32g474cet3 | IC1 |
| 1 | SW_Push | Speed_controller_footprints:button_switch | SW1 |
| 1 | SW_SPDT | Speed_controller_footprints:CJS1200TA1_spdt | SW2 |
| 1 | Speed_controller_footprints:5117 - test_point | Speed_controller_footprints:5117 - test_point | TP3 |
| 1 | TXB0106PW | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U11 |
| 1 | opa2374 | Speed_controller_footprints:SOIC127P600X175-8N - op_amp2374 | U5 |
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Questions
How big is the Speed controller PCB?
It measures 127.3 × 73 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Speed controller use?
179 parts, built around the STM32G474CET3, IR2103PBF, OPA374M/TR and LMR36510ADDA. 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 Speed controller KiCad files?
From the rkleva/Low-Power-Inverter-STM32 repository on GitHub, at the commit this page was made from: the board is Speed_controller.kicad_pcb and its schematic FET_circuitry.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Speed controller design in my own project?
Its repository states no licence, so its author keeps all rights: ask rkleva before reusing the design.