2 layers99.4 × 99.4 mm
RP2350 80QFN minimal
alvestav/alvestav-lee-thesis-project-2025
This is the GitHub repository for the thesis project in computer and electronics engineering by Alvestav and Lee
166 partsMIT
2 layers185 × 83 mm
Mass Spring Damper SysID Lab
Scalable-Open-Source-Labs/Mass-Spring-Damper-SysID-Lab1An open source Mass-Spring-Damper to assist with teaching System Identification
- Size
- 185 × 83 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 135
- Nets
- 99
- Pads
- 396
- Tracks, vias
- 1,129, 129
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Dec 2025
- Updated
- 29 Sep 2026
Overview
Mass Spring Damper SysID Lab is an open-source printed circuit board by Scalable-Open-Source-Labs, from the Scalable-Open-Source-Labs/Mass-Spring-Damper-SysID-Lab repository on GitHub, published under the MIT licence. It is a 2-layer board of 185 × 83 mm with 135 parts on 99 nets, routed with 1,129 tracks and 129 vias.
It is built around the RP2040, 74AHCT125D and LM358, with the MAX7219M, W25Q16JVSSIQ and GS3011CR-G among its other parts. Its parts include 32 resistors, 27 capacitors, 16 ICs, 3 switches and 1 diode. It belongs with the RP2040 boards of this library.
Main components
12
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
74AHCT125D
SOP-14-40℃~+125℃ 1 4 4.3ns@5V,50pF 4.5V~5.5V 40uA 74AHCT 8mA 8mA Schmitt trigger Tri-State Unidirectional SOP-14 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
LM358
SOP-8-18V~18V 0℃~+70℃ 1.2MHz 10nA 2 24mA 3V~36V 500uA 50nA 5mV 80dB Built-in compensation SOP-8 Operational Amplifier ROHSMSKSEMIOperational Amplifier
MAX7219M
SOP-24-300mil10MHz 150uA 3-Wire Serial Interface 30mA 320mA 4V~5.5V 8 Segment x 8 Digit Built-in display RAM、PWM dimming、BCD input latch function、Power-up display blanking、Lamp test function、Cascadable function SOP-24-300mil Digital Tube Drivers ROHSHGSEMIDigital Tube Drivers
W25Q16JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
GS3011CR-G
SMD,12x7.3mmLED Segment DisplaysGuangcai Display
ITR8307/S17/TR8(B)
SMD-4PSMD-4P Reflective Optical Interrupters ROHSEverlight ElectronicsReflective Optical InterruptersLM393
SOP-8-16V~16V 0℃~+70℃ 2 2.5mA 250nA 2V~36V 36V 5mV 5nA Fail-safe function Open-drain SOP-8 Comparators ROHSMSKSEMIComparators
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage 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)
SMTSO3060CTJ
-M3X6 Tin plated - Patch round nut ROHSSinhooSMD Round Nut
SMTSO3080CTJ
-M3X8 Tin plated - Patch round nut ROHSSinhooSMD Round Nut
README
README.md
Mass Spring Damper SysID Lab
A low-cost dynamics lab that allows students to perform System Identification on a real Mass-Spring-Damper system.
This is the source repo where you can download files for manufacturing: hardware, firmware, and enclosure design files. If you're looking for usage instructions or lab notes, head to the user guide.
Designed by Michael Ruppe for Monash University in partnership with MathWorks®
Repo map
| Path | What it is |
|---|---|
PCB/ | KiCad hardware source for the main board and carriage |
Enclosure/ | 3D-printable case, guide rail, and lasercut acrylic lid |
firmware-mass-spring-damper-sys-id-lab/ | Arduino sketch for the RP2040 main board |
Images/ | Photos used in the assembly guide |
Assembly-Instructions.md | Step-by-step mechanical build guide |
Programming-Instructions.md | Flashing and firmware dev setup |
Ordering-Instructions.md | Bill of materials and where to order/fabricate each part |
JLCPCB-Ordering-Instructions.md | Step-by-step JLCPCB order for the fabricated and assembled boards |
RELEASING.md | Maintainer checklist for cutting a tagged release |
Getting started
- Ordering Instructions
- Assembly Instructions
- Programming Instructions
- Latest Project Release - A downloadable bundle of all project files to complete this project: 3D Printing, PCBA, Lasercutting
License
This project is licensed under the MIT License.
Bundled third-party content — KiCad symbol/footprint libraries and vendor 3D step models under PCB/main-board/packages3D/ and PCB/carriage/CAD/, and the patched LedControl fork used by the firmware (see firmware README) — retains its original license terms.
Parts
135| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R3, R10, R11, R12, R15, R16, R17, R20, R21, R22, R26, R28, R29, R31, R32 +2 |
| 15 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C7, C8, C10, C11, C12, C13, C16, C22, C23 |
| 10 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10 |
| 8 | SMTSO3060 | Footprints:MountingHole_SMTSO3060_3.2mm_M3 | H1, H2, H3, H4, H5, H6, H7, H8 |
| 7 | 1uF | Capacitor_SMD:C_0603_1608Metric | C14, C15, C21, C24, C25, C26, C27 |
| 7 | 220 | Resistor_SMD:R_0603_1608Metric | R8, R14, R19, R30, R34, R35, R36 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 4 | SMTSO3080 | Footprints:MountingHole_SMTSO3080_3.2mm_M3 | H9, H10, H11, H12 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C19, C20, C28 |
| 3 | 330k | Resistor_SMD:R_0603_1608Metric | R6, R13, R18 |
| 3 | GS3011C | Footprints:GS3011 | U5, U6, U7 |
| 3 | ITR8307-S17-TR8 | OptoDevice:Everlight_ITR1201SR10AR | U9, U11, U12 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R25, R27 |
| 2 | 27R | Resistor_SMD:R_0603_1608Metric | R23, R24 |
| 2 | 27pF | Capacitor_SMD:C_0603_1608Metric | C17, C18 |
| 2 | LM358 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3 |
| 2 | LM393 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1, U4 |
| 2 | VAL** | Footprints:mouse-bite-2mm-4mm-single-sided | mousebite1, mousebite2 |
| 1 | 12MHz 20pF 50Ohm_ESR | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 74AHCT125 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U10 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U15 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T_NO_E-Switch_TL3301NxxxxxG | SW1 |
| 1 | G*** | kibuzzard-6A5DFDED | kibuzzard-6A5DFDED |
| 1 | G*** | kibuzzard-6A9CBA92 | kibuzzard-6A9CBA92 |
| 1 | G*** | kibuzzard-6A9CBA16 | kibuzzard-6A9CBA16 |
| 1 | G*** | kibuzzard-6A5DA214 | kibuzzard-6A5DA214 |
| 1 | G*** | kibuzzard-6A9CBA9F | kibuzzard-6A9CBA9F |
| 1 | G*** | kibuzzard-6A9CBA31 | kibuzzard-6A9CBA31 |
| 1 | G*** | kibuzzard-6978363D | kibuzzard-6978363D |
| 1 | G*** | kibuzzard-69310180 | kibuzzard-69310180 |
| 1 | G*** | kibuzzard-6A9CABE9 | kibuzzard-6A9CABE9 |
| 1 | G*** | kibuzzard-6A601CB9 | kibuzzard-6A601CB9 |
| 1 | G*** | kibuzzard-6A5D9E3D | kibuzzard-6A5D9E3D |
| 1 | G*** | kibuzzard-6A9CBA99 | kibuzzard-6A9CBA99 |
| 1 | G*** | kibuzzard-6A9CBB45 | kibuzzard-6A9CBB45 |
| 1 | G*** | kibuzzard-6A601CBF | kibuzzard-6A601CBF |
| 1 | G*** | kibuzzard-69783696 | kibuzzard-69783696 |
| 1 | G*** | kibuzzard-6A601CD4 | kibuzzard-6A601CD4 |
| 1 | G*** | kibuzzard-6A815F94 | kibuzzard-6A815F94 |
| 1 | G*** | kibuzzard-69645CED | kibuzzard-69645CED |
| 1 | G*** | kibuzzard-6A9CBA3E | kibuzzard-6A9CBA3E |
| 1 | G*** | kibuzzard-6A9CBA47 | kibuzzard-6A9CBA47 |
| 1 | G*** | kibuzzard-6A9CB9E8 | kibuzzard-6A9CB9E8 |
| 1 | G*** | kibuzzard-6A9CBA29 | kibuzzard-6A9CBA29 |
| 1 | G*** | kibuzzard-6930AF86 | kibuzzard-6930AF86 |
| 1 | G*** | kibuzzard-6A5DFE62 | kibuzzard-6A5DFE62 |
| 1 | MAX7219 | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U8 |
| 1 | PWR | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | PolyFuse 1A Trip | Resistor_SMD:R_1206_3216Metric | F1 |
| 1 | REC/STOP | Button_Switch_THT:SW_SPST_Omron_B3F-40xx | SW2 |
| 1 | RESET | Button_Switch_THT:SW_SPST_Omron_B3F-40xx | SW3 |
| 1 | RP2040 | RP2040_minimal:RP2040-QFN-56 | U14 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U13 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J1 |
| 1 | W25Q16JVSS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U16 |
The 134 most common of 135 parts.
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Questions
How big is the Mass Spring Damper SysID Lab PCB?
It measures 185 × 83 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mass Spring Damper SysID Lab use?
135 parts, built around the RP2040, 74AHCT125D, LM358 and MAX7219M. 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 Mass Spring Damper SysID Lab KiCad files?
From the Scalable-Open-Source-Labs/Mass-Spring-Damper-SysID-Lab repository on GitHub, at the commit this page was made from: the board is PCB/main-board/main-board.kicad_pcb and its schematic PCB/carriage/carriage.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mass Spring Damper SysID Lab design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).