FH2 Flight Computer
About the FH2 Flight Computer PCB
FH2 Flight Computer is an open source STM32 PCB design by EPFLRocketTeam, published on GitHub. It is a 4-layer board measuring 80 × 80 mm, with 245 components from 109 distinct parts.
Its main chip is the INA228, from the STM32 family. Other key parts include the 584-LTC4090EDJC#PBF, 584-LT3960EMSE#PBF, 584-LTC3425EUH#PBF, TPS7A0533PDBZR and TPS22919DCKR. By type, the board carries 76 resistors, 74 capacitors, 35 diodes, 25 ICs, 11 connectors and 7 transistors.
From the project
Repository containing PCBs files of FH2 Avionics
Main components on the FH2 Flight Computer
FH2 Flight Computer bill of materials (BOM)
245 components, 109 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 584-LTC4090EDJC#PBF BMP390 | BMP390 | IC1 |
| 1 | 584-LT3960EMSE#PBF BMP390 | BMP390 | IC2 |
| 1 | 584-LTC3425EUH#PBF BMP390 | BMP390 | IC3 |
| 1 | TPS7A0533PDBZR BMP390 | BMP390 | IC4 |
| 3 | TPS22919DCKR | SOT65P210X110-6N | IC5, IC6, IC7 |
| 1 | ADXL375BCCZ | CC-14-1 | IC8 |
| 1 | CD4051BPWR | TSSOP-16_4.4x5mm_P0.65mm | IC9 |
| 1 | SI2333DS-T1-E3 MCP1727-3302xSN | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | SI2333DS-T1-E3 TPS2116DRL | SOT-583-8 | U2 |
| 1 | INA228 STM32H743ZITx | LQFP-144_20x20mm_P0.5mm | U3 |
| 1 | INA228 RGBLED_1 | NEW_RGB_LED | U4 |
| 1 | LTC4357DCB RGBLED_2 | NEW_RGB_LED | U5 |
| 1 | LTC4357DCB RGBLED_3 | NEW_RGB_LED | U6 |
| 1 | MAX-M10S | ublox_MAX | U7 |
| 4 | ICM-45605 | XDCR_ICM-45605 | U8, U9, U10, U11 |
| 1 | MAX3226 | SSOP-16_5.3x6.2mm_P0.65mm | U12 |
| 1 | SPINE_LT3960 | LT3960 | U13 |
| 2 | MCP2542FDxMF | DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | U14, U15 |
| 1 | TMP1075DSG | WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm_ThermalVias | U16 |
| 1 | FDS9926A IRLML2502 | SOT-23 | Q1 |
Show 89 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | IRLML6344TRPBF | SOT95P237X112-3N | Q2, Q3, Q4, Q5, Q6, Q7 |
| 1 | 26Mhz | DSA6101CA3B0500000VAO | Y1 |
| 1 | DIN41612_02X16_AB CON-SMA-EDGE-S | RFSOLUTIONS_CON-SMA-EDGE-S | J1 |
| 1 | CONN_01X03_PIN Screw_Terminal_01x02 | 395434302 | J2 |
| 1 | CONN_01X02_PIN Screw_Terminal_01x02 | 395434302 | J3 |
| 2 | Screw_Terminal_01x02 | 395434302 | J4, J5 |
| 1 | Micro_SD_Card_Det_Hirose_DM3AT | microSD_HC_Hirose_DM3AT-SF-PEJM5 | J6 |
| 2 | Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Vertical | J7, J8 |
| 2 | MUSB-05-S-B-SM-A-K-TR | MUSB05SBSMAKTR | J9, J10 |
| 1 | DIN41612_02x16_AB | DIN41612_B2_2x16_Male_Horizontal_THT | J11 |
| 1 | +3V3 | TestPoint_THTPad_D2.0mm_Drill1.0mm | 3V3 |
| 1 | +5V | TestPoint_THTPad_D2.0mm_Drill1.0mm | 5V |
| 1 | +5V_SPINE | TestPoint_THTPad_D2.0mm_Drill1.0mm | 5V_spine |
| 1 | 1049 Battery | BatteryHolder_Keystone_2998_1x6.8mm | BT1 |
| 1 | Buzzer | Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm | BZ1 |
| 3 | 1206L075/16WR 1206L075_16WR | L_1206_3216Metric | F1, F2, F3 |
| 4 | 2920L110/60MR 2920L110_60MR | 2920L07560MR | F4, F5, F6, F7 |
| 1 | SW_SPDT | SW_SPDT_PCM12 | SW1 |
| 1 | SW_Push_SPDT | SW_SPST_B3U-1100P | SW2 |
| 1 | DFLS240-7 GREEN | LED_0603_1608Metric | D1 |
| 3 | RED | LED_0603_1608Metric | D2, D17, D28 |
| 1 | SMF5V0A | D_SMF | D3 |
| 1 | PESD4USB3UTBS-QX SMF5V0A | D_SMF | D4 |
| 1 | UPS5817E3/TR7 SMF5V0A | D_SMF | D5 |
| 3 | UPS5817E3/TR7 RED | LED_0603_1608Metric | D6, D7, D8 |
| 1 | 1N4148WT RED | LED_0603_1608Metric | D9 |
| 3 | GREEN | LED_0603_1608Metric | D10, D13, D27 |
| 1 | 1N5819 | D_SOD-323 | D11 |
| 1 | STPS0540Z | STPS0540Z | D12 |
| 1 | SBRT5A50SAF-13 RED | LED_0603_1608Metric | D14 |
| 1 | 0603ESDA-MLP7 | D_0603_1608Metric | D15 |
| 5 | ORG | LED_0603_1608Metric | D16, D18, D19, D20, D21 |
| 1 | SMBJ26A | DIOM5436X261N | D22 |
| 7 | PESD4USB3UTBS | PESD4USB3UTBSQX | D23, D24, D29, D30, D33, D36, D37 |
| 2 | YELLOW | LED_0603_1608Metric | D26, D38 |
| 2 | DESD2CAN2SOQ-7 | SOT96P240X110-3N | D31, D35 |
| 1 | 120R | L_0805_2012Metric | FB1 |
| 1 | 2.66@100MHz | L_0603_1608Metric | FB2 |
| 1 | 10P 100n | C_0603_1608Metric | C1 |
| 1 | 270P 100n | C_0603_1608Metric | C2 |
| 33 | 100n | C_0603_1608Metric | C3, C5, C6, C7, C8, C15, C16, C19 +25 |
| 1 | 0.33U 100n | C_0603_1608Metric | C4 |
| 2 | 4u7 | C_0603_1608Metric | C9, C13 |
| 1 | 0.1U 1000p | C_0603_1608Metric | C10 |
| 1 | 0.47U 100n | C_0603_1608Metric | C11 |
| 1 | 2U2 4u7 | C_0603_1608Metric | C12 |
| 5 | 1u | C_0603_1608Metric | C14, C37, C38, C43, C47 |
| 1 | 0.047U 100n | C_0603_1608Metric | C17 |
| 1 | 0.1U 100n | C_0603_1608Metric | C18 |
| 1 | 100P 10u | C_0603_1608Metric | C20 |
| 1 | 10P 100n | C_0402_1005Metric | C21 |
| 6 | 100n | C_0402_1005Metric | C22, C24, C31, C33, C34, C35 |
| 1 | 6TPE150M 100n | C_0402_1005Metric | C23 |
| 1 | 22U 10n | C_0603_1608Metric | C25 |
| 1 | 22U 100n | C_0402_1005Metric | C26 |
| 1 | 0.47U 100n | C_0402_1005Metric | C27 |
| 1 | 0.1U 100n | C_0402_1005Metric | C28 |
| 1 | 22N 100n | C_0402_1005Metric | C29 |
| 1 | 3.3N 100n | C_0603_1608Metric | C30 |
| 1 | 10TPB47M 100n | C_0402_1005Metric | C32 |
| 2 | 10n | C_0603_1608Metric | C36, C74 |
| 1 | 120p | C_0603_1608Metric | C39 |
| 1 | 10p ceramic 0402 16V | C_0402_1005Metric | C46 |
| 1 | 2u2 | C_0603_1608Metric | C64 |
| 4 | 47p | C_0603_1608Metric | C65, C66, C69, C70 |
| 1 | 10u tantalum | CP_EIA-2012-12_Kemet-R | C72 |
| 16 | 1k1 | R_0603_1608Metric | R1, R2, R4, R5, R6, R13, R28, R29 +8 |
| 2 | 100k | R_0603_1608Metric | R3, R21 |
| 1 | 32k | R_0603_1608Metric | R7 |
| 8 | 10k | R_0603_1608Metric | R8, R37, R38, R39, R43, R44, R66, R76 |
| 1 | 0 | R_0603_1608Metric | R9 |
| 1 | 680 0 | R_0603_1608Metric | R10 |
| 1 | 680 10k | R_0603_1608Metric | R11 |
| 1 | 0.042 1k1 | R_0603_1608Metric | R12 |
| 3 | 5k | R_0603_1608Metric | R14, R17, R64 |
| 2 | 4K7 5k | R_0603_1608Metric | R15, R16 |
| 3 | 33 | R_0603_1608Metric | R18, R61, R62 |
| 1 | 4k7 | R_0603_1608Metric | R19 |
| 1 | 100K 100 | R_0603_1608Metric | R20 |
| 1 | 3k3 | R_0603_1608Metric | R22 |
| 11 | 33 | R_0402_1005Metric | R23, R25, R27, R47, R48, R49, R50, R51 +3 |
| 1 | 0.021 33 | R_0402_1005Metric | R24 |
| 1 | 0.017 1k1 | R_0603_1608Metric | R26 |
| 1 | 17k8 | R_0603_1608Metric | R30 |
| 1 | 22K 4k7 | R_0603_1608Metric | R31 |
| 7 | 215 | R_0603_1608Metric | R40, R41, R42, R45, R46, R65, R67 |
| 4 | 120 | R_0603_1608Metric | R56, R57, R60, R63 |
| 4 | 1M | R_0603_1608Metric | R68, R70, R72, R74 |
| 4 | 150k | R_0603_1608Metric | R69, R71, R73, R75 |
FH2 Flight Computer design files
The KiCad project lives in the EPFLRocketTeam/2026_C_AV_HARDWARE repository on GitHub; these links point at the commit this page was built from.
FH2 Flight Computer: common questions
What microcontroller does the FH2 Flight Computer use?
The FH2 Flight Computer is built around the INA228, from the STM32 family.
How big is the FH2 Flight Computer PCB?
The FH2 Flight Computer measures 80 × 80 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the FH2 Flight Computer?
245 components, from 109 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the FH2 Flight Computer design files?
From the EPFLRocketTeam/2026_C_AV_HARDWARE repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the FH2 Flight Computer design in my own project?
The repository has no license, so all rights stay with EPFLRocketTeam. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the FH2 Flight Computer without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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