4 layers140.3 × 101.7 mm
Sheet1
horychen/ProjectEureka
12 phase motor drive including inverter, microcontroller-mother-board, sensing, communication, DAC, etc.
338 parts17GPL-3.0
2 layers70.4 × 164.8 mm
SensorLEM portable
horychen/ProjectEureka1712 phase motor drive including inverter, microcontroller-mother-board, sensing, communication, DAC, etc.
- Size
- 70.4 × 164.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 38
- Pads
- 184
- Tracks, vias
- 285, 93
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 11 Dec 2023
- Updated
- 4 Dec 2025
Overview
SensorLEM portable is an open-source printed circuit board by horychen, from the horychen/ProjectEureka repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 70.4 × 164.8 mm with 76 parts on 38 nets, routed with 285 tracks and 93 vias.
It is built around the VRB1212S-6WR3, LA55-P and DB2EVC-3.81-4P-GN. Its parts include 31 capacitors, 22 resistors, 3 ICs, 1 diode and 1 connector. It belongs with the robots and motor control and power boards of this library.
Main components
3
VRB1212S-6WR3
SIP,22x9.5mm-40℃~+105℃ 1 1.6kV 12V 12mm 22mm 330kHz 330uF 500mA 50mVp-p 6W 80% 9.5mm 9V~18V Short Circuit Protection、Over Current Protection SIP,22x9.5mm Isolated Power Modules ROHSEVISUNIsolated Power Modules
LA55-P
插件-12V~15V -40℃~+85℃ 2.5kVrms 200kHz 50A Support 插件 Current Sensors ROHSLEMCurrent Sensors
DB2EVC-3.81-4P-GN
插件,P=3.81mm-40℃~+105℃ 1 1x4P 3.81mm 300V 4 4P 8A Board Side/Socket - Closed Green Through Hole Without fixing device Plugin,P=3.81mm Pluggable System Terminal Block ROHSDORABOPluggable System Terminal Block
README
readme.mdProjectEureka!--A Multi-phase Motor Drive Design for Robot or Maglev systems
ProjectEureka seeks to streamline the intricate design of robot systems, including communication, cable arrangements, and synchronization, by integrating several motor drivers (up to four) with a single microcontroller (DSP2837xD). This can also be utilized as a testing platform for bearingless motor or any other kind of AC motors. For access to example codes, please visit the following link: here for cpu01 code, and here for cpu02 code. Displayed below is an image representing the previous version.
Software
We have been shifting from Altium Designer to KiCAD.
Characteristics
Multi-board modulized design is adopted in Project Eureka!. Project Eureka! includes:
- Current sensor(LA55-P) 📂 PCBProject_SensorLEM
- DAC data collect board(MAX5725)📂PCBProject_SPI_MAX5307_DAC
- RS422/RS423 communication board 📂PCBProject_Encoder
- Inverters (FNC42060F) 📂PCBProject_InverterFNC42060F
- Auxiliary power supply 📂PCBProject_Power
- Mother board that connected all the boards above 📂PCBProject_Extension28377dBGA
- CAN/SCI/USB communication board📂PCBProject_Can_SCI_USB
- RS485 communication board 📂PCBProject_Happy485
This means:
- Convenient alternative for replacing one's own projects or addressing shortages of components.
- Utilize a single board design in their own design.
- Quick update and easy for collaboration (KiCAD 8 supports git now).
ProjectEureka can drive at most four AC motors. Thanks to the TMS320F28377D from TI, ProjectEureka can drive at most four AC motors by adding necessary inverter blocks and corresponding current sensors, which means:
- Facilitates communication and synchronization among motors.
- Suitable for organizing cables in a user-friendly manner.
Liscence
GPLv3
Other Similar Projects
Odrive and VESC are two famous projects that support the control of a three-phase motor. There are inverter designs that are compatible with them, see e.g., Axiom. Other similar but less known hardwares can also be found, see e.g., moteus-c1. Yet another project I recently found is STMBL for STM32 microprocessor.
ProjectEureka! is, however, focusing on the more advanced topic of a complicated system that requires extendable hardwares. In this sense, there is indeed one similar purpose project that is based on Xilinx, i.e., the AMDC platform from the group of Prof. Eric L. Severson. See also its doc and its blog post.
As a comparison, ProjectEureka! currently only supports 28379D that has one CLB module of a very limited FPGA capability.
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 0R | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R19, R20, R21, RB1, RB2, RB3, RB4, RB5, RB6, RB7, RB10, RB11, RB12 +2 |
| 12 | 47nf | Capacitor_SMD:C_0805_2012Metric | C6, C11, C12, C16, C17, C18, C25, C26, C27, C31, C32, C33 |
| 6 | 24R 1%精度 | Resistor_SMD:R_2512_6332Metric | RM1, RM2, RM3, RM4, RM5, RM6 |
| 6 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C19, C20, C21, C22, C23, C24 |
| 6 | BNC | SensorLEM_lib:CPBNCPC010 | BNC1, BNC2, BNC3, BNC4, BNC5, BNC6 |
| 6 | LA55-P | SensorLEM_lib:LEM_LA 55-P | A1, A2, A3, A4, A5, A6 |
| 5 | 100uf 25V 贴片铝电解 | SensorLEM_lib:CAP_6.4mm | C2, C4, C9, C13, C34 |
| 4 | 105 | Capacitor_SMD:C_0805_2012Metric | C3, C5, C10, C14 |
| 4 | 1nF | SensorLEM_lib:CAP-TH_L7.5-W4.5-P10.00-D0.6 | C1, C7, C8, C15 |
| 3 | DNP | Resistor_SMD:R_0805_2012Metric | R4, R5, R7 |
| 2 | VRB1212S-6WR3 | SensorLEM_lib:SIP,22x9.5mm | U1, U2 |
| 1 | 4.7k | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | DB2EVC-3.81-4P-GN | SensorLEM_lib:CONN-TH_4P-P3.81_DB2EVC-3.81-4P | CN1 |
| 1 | FT-AX1D | SensorLEM_lib:PWRM-TH_MORNSUN_FT-AX1D | U3 |
| 1 | LED0 | SensorLEM_lib:LED0805 | D1 |
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Questions
How big is the SensorLEM portable PCB?
It measures 70.4 × 164.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SensorLEM portable use?
76 parts, built around the VRB1212S-6WR3, LA55-P and DB2EVC-3.81-4P-GN. 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 SensorLEM portable KiCad files?
From the horychen/ProjectEureka repository on GitHub, at the commit this page was made from: the board is PCBProject_SensorLEM/sensorLEM_portable/sensorLEM_portable.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SensorLEM portable design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).