4 layers36 × 64 mm
4 layers40 × 75 mm
CUR flight computer 25-26
CU-Rocketry/flight_computer1Competition Flight Computer Module 25-26
- Size
- 40 × 75 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 169
- Nets
- 142
- Pads
- 581
- Tracks, vias
- 1,665, 299
- Pours
- 763
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Nov 2025
- Updated
- 16 Jun 2026
Overview
CUR flight computer 25-26 is an open-source printed circuit board by CU-Rocketry, from the CU-Rocketry/flight_computer repository on GitHub. It is a 4-layer board of 40 × 75 mm with 169 parts on 142 nets, routed with 1,665 tracks and 299 vias.
It is built around the STM32H523VET6, E22-400MM22S and IIS2MDC, with the LPS22HB, BY25Q128ESSIG(T) and MSD-4-A among its other parts. Its parts include 48 resistors, 33 capacitors, 14 ICs, 13 connectors and 5 diodes. It belongs with the STM32 boards of this library.
Main components
12
STM32H523VET6
LQFP-100(14x14)-40℃~+85℃ 1.71V~3.6V 250MHz 272KB 32 Bit 512KB 80 ARM Cortex-M33 Built-in+External FLASH LQFP-100(14x14) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
E22-400MM22S
SMD,10x10mm-147dBm 1.8V~3.7V 100mA 22.3dBm 433MHz、470MHz 6.5mA 7km Continuous frequency coverage LoRa SPI Stamp Hole Antenna、IPEX interface SMD,10x10mm LoRa Modules ROHSChengdu Ebyte Elec TechLoRa Modules
IIS2MDC
LGA-12(2x2)-40℃~+85℃ 1.13mA 1.71V~3.6V 16bit I2C、SPI ±4.9152mT ±4.9152mT LGA-12(2x2) 3D Magnetic Sensors ROHSSTMicroelectronics3D Magnetic Sensors
LPS22HB
HLGA-10(2x2)-40℃~+85℃ 0.1hpa 0.1hpa 1.7V~3.6V 1uA 26Kpa~1.26bar I2C、SPI On-chip temperature compensation、Integrated ADC and digital interface、On-chip calibration and non-volatile storage、Integrated signal amplifier、On-chip temperature output HLGA-10(2x2) Pressure Sensors ROHSSTMicroelectronicsPressure Sensors
BY25Q128ESSIG(T)
SOP-8-208milNOR FLASHBOYAMICRO
MSD-4-A
SMDSMD SD Card / Memory Card Connector ROHSCUISD Card / Memory Card Connector
BUK9K25-40RAX
LFPAK-56D-55℃~+175℃ 114pF 18.2A 2 N-Channel 2.1V 29mΩ@5V 32W 40V 6.3nC@5V 701pF 76pF N-Channel LFPAK-56D MOSFETs ROHSNexperiaMOSFETs
LM66200DRL
SOT-583-40℃~+125℃ 1.32uA 1.6V~5.5V 2 74mΩ Reverse current blocking、Over temperature protection、With enable SOT-583 ORing Controllers ROHSTexas InstrumentsPower Distribution Switches
LSM6DSV80X
LGA-14L(2.5x3)-40℃~+85℃ 1.71V~3.6V 2.9uA 4.5KB IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±4000dps ±80g LGA-14L(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
SAM-M8Q-0
SMD-20P,15x15mmUncategorisedu-blox
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)
RC0603FR-0710KL
UncategorisedUnknown maker
README
README.mdflight_computer
Competition Flight Computer Module 25-26
Parts
169| Qty | Value | Footprint | References |
|---|---|---|---|
| 38 | RCUCTE | TestPoint_KOASpeer:TestPoint_Chip_RCUCTE_0603 | TP1, TP2, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23 +22 |
| 21 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R4, R10, R11, R12, R15, R17, R20, R26, R27, R32, R33, R34, R36, R40, R41 +5 |
| 17 | 220n | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C10, C11, C12, C13, C14, C16, C18, C20, C22, C23, C24, C30, C31 +1 |
| 8 | 270 | Resistor_SMD:R_0603_1608Metric | R30, R31, R38, R39, R48, R51, R54, R57 |
| 7 | 2.2u | Capacitor_SMD:C_0603_1608Metric | C2, C7, C15, C17, C33, C34, C35 |
| 6 | 3k | Resistor_SMD:R_0603_1608Metric | R14, R16, R35, R37, R43, R45 |
| 6 | TB0011-350-02GR | Terminal_SAMESKY_TB0011-350-02GR:SAMESKY_TB0011-350-02GR | J2, J3, J8, J9, J10, J11 |
| 5 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C19, C21, C25, C32 |
| 5 | 47 | Resistor_SMD:R_0603_1608Metric | R2, R52, R53, R55, R56 |
| 5 | GSPTS0018 | PTS815_SJM_250_SMTR_LFS:SW_Push_PTS815_SJM_250_SMTR_LFS | SW1, SW2, SW3, SW4, SW5 |
| 4 | 0 | Resistor_SMD:R_0603_1608Metric | R8, R9, R28, R29 |
| 4 | ESDA5V3SC5 | Package_TO_SOT_SMD:SOT-23-5 | D11, D12, D18, D19 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | LOGO | LOGO | G***, G***, G*** |
| 2 | 10p | Capacitor_SMD:C_0603_1608Metric | C3, C9 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R46, R47 |
| 2 | BUK9K25-40RAX | BUK9K25-40RAX:BUK9K2540RAX | U12, U13 |
| 2 | CLV1L-FKB | LED_SMD:LED_Cree-PLCC4_3.2x2.8mm_CCW | LED_1, LED_2 |
| 2 | CSSH0805FT1L00 | Resistor_SMD:R_0805_2012Metric | R18, R19 |
| 2 | DNP | Capacitor_SMD:C_0603_1608Metric | C26, C27 |
| 2 | XT30U-M | Connector_AMASS:AMASS_XT30U-M_1x02_P5.0mm_Vertical | J4, J5 |
| 2 | ZXCT180B4W5 | Package_TO_SOT_SMD:SOT-23-5 | U15, U16 |
| 1 | 0 | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | ABM8-16.000MHZ-10-1-U-T | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | BAT54-7-F | Package_TO_SOT_SMD:SOT-23 | D3 |
| 1 | CMT-7525-03 | Buzzer_SameSky:XDCR_CMT-7525-03-SMT-TR | BZ1 |
| 1 | CON-SMA-EDGE-S | Connector_Coxaial_RFSOLUTIONS_CON-SMA-EDGE-S:Conn_Coaxial_RFSOLUTIONS_CON-SMA-EDGE-S | J14 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J13 |
| 1 | E22-400MM_22S | EBYTE_LoRa:EBYTE_LoRA_E22-400MM22S | U5 |
| 1 | FTSH-107-01-X-DV-K-TR | Connector_SAMTEC_FTSH-107-01-X-DV-K-TR:SAMTEC_FTSH-107-01-X-DV-K-TR | J15 |
| 1 | IIS2MDC | ST_IIS2MDC:LGA-12_2X2X0P7_STM | U2 |
| 1 | LM66200 | Package_TO_SOT_SMD:SOT-583-8 | U7 |
| 1 | LPS22HB | Package_LGA:ST_HLGA-10_2x2mm_P0.5mm_LayoutBorder3x2y | U3 |
| 1 | LSM6DSV80X | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U4 |
| 1 | MSD-4-A | MSD-4-A:CUI_MSD-4-A | J1 |
| 1 | NCP186AMX330TAG | Regulator_Linear_onsemi:NCP186_XDFN8_1.6x1.2mm_P0.4mm | U8 |
| 1 | NTR4003N | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SAM-M8Q | RF_GPS:ublox_SAM-M8Q | U11 |
| 1 | STM32H523VETx | Package_QFP:LQFP-100_14x14mm_P0.5mm | U1 |
| 1 | UJ20-C-H-G-SMT-5-P16-TR | SAMESKY_UJ20-C-H-G-SMT-5-P16-TR:SAMESKY_UJ20-C-H-G-SMT-5-P16-TR | J12 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U14 |
| 1 | W25Q32JVSS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U10 |
Questions
How big is the CUR flight computer 25-26 PCB?
It measures 40 × 75 mm and has 4 copper layers, 1.6 mm thick.
What parts does the CUR flight computer 25-26 use?
169 parts, built around the STM32H523VET6, E22-400MM22S, IIS2MDC and LPS22HB. 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 CUR flight computer 25-26 KiCad files?
From the CU-Rocketry/flight_computer repository on GitHub, at the commit this page was made from: the board is CUR_flight_computer_25-26/CUR_flight_computer_25-26.kicad_pcb and its schematic CUR_flight_computer_25-26/CUR_flight_computer_25-26.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CUR flight computer 25-26 design in my own project?
Its repository states no licence, so its author keeps all rights: ask CU-Rocketry before reusing the design.
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