Motherboard
About the Motherboard PCB
Motherboard is an open source STM32 PCB design by JacobParent7, published on GitHub. It is a 4-layer board measuring 115 × 125 mm, with 232 components from 61 distinct parts.
Its main chip is the STM32F205RBT6, from the STM32 family. Other key parts include the BQ79600PWRQ1, LMR51430YDDCR and TCAN1462VDRQ1. By type, the board carries 84 resistors, 78 capacitors, 33 diodes, 8 transistors, 8 fuses and 7 connectors.
It belongs with the power & battery designs in this gallery.
From the project
Distributed BMS designed for FSAE around the STM32 microcontroller and BQ79616/BQ79614/BQ79612 precision battery monitor, balancer and integrated protector.
Develop a distributed Battery Management System (BMS) for LSU FSAE's electric accumulator to be used in 2026 competition, targeting completion by May, 2025. All hardware and firmware development will be documented in this repository.
Main components on the Motherboard
Motherboard bill of materials (BOM)
232 components, 61 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ79600PWRQ1 | BQ79600 | IC501 |
| 1 | STM32F205RBT6 STM32F205RBTx | LQFP-64_10x10mm_P0.5mm | U201 |
| 2 | LMR51430YDDCR LMR51430 | SOT-23-6 | U401, U402 |
| 2 | TCAN1462VDRQ1 PTCAN1462DRQ1 | CAN1462 | U601, U602 |
| 4 | MMBT3904 Q_NPN_BEC | SOT-23 | Q701, Q702, Q703, Q707 |
| 4 | IRF3205STRLPBF Q_NMOS_GDS | TO-263-2 | Q704, Q705, Q706, Q708 |
| 1 | X322516MLB4SI 16 Mhz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y201 |
| 1 | DM3AT-SF-PEJM5 DM3AT-SF-PEJM5_40_ | SD_CARD | J202 |
| 2 | Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Vertical | J301, J302 |
| 1 | 1376357-3 | 13763573 | J303 |
| 2 | 430450200 | CON_430450200_MOL | J304, J305 |
| 1 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J306 |
| 2 | SMD0805B050TF Fuse | Fuse_0805_2012Metric | F301, F302 |
| 2 | 12H1300C 3A | Fuse_1206_3216Metric | F401, F402 |
| 4 | SMD1812P050TF/30 Fuse | Fuse_1812_4532Metric | F701, F702, F703, F704 |
| 13 | PESD3V3L1BA,115 D_TVS | D_SOD-323 | D201, D203, D204, D205, D206, D207, D208, D209 +5 |
| 3 | VLMTG1401-GS08 GREEN | LED_0603_1608Metric | D202, D409, D410 |
| 2 | LM3Z3V3T1G D_Zener | D_SOD-323 | D401, D402 |
| 4 | SMF12CA D_TVS | D_SOD-123 | D403, D404, D407, D408 |
| 2 | SS54 D_Schottky | D_SMA | D405, D406 |
Show 41 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | KT-0603R RED | LED_0603_1608Metric | D501 |
| 4 | ESD5V0D3B-TP D_TVS | D_SOD-323 | D502, D503, D504, D505 |
| 4 | BZT52C30 40V | D_SOD-123 | D701, D702, D703, D704 |
| 1 | LQG15HN10NJ02D 10n | L_0402_1005Metric | L201 |
| 2 | BMRA000505301R2MA1 1.2u | L_Chilisin_BMRA00050530 | L401, L402 |
| 2 | MWSA0603S-100MT 10u | L_Sunlord_MWSA0603S | L403, L404 |
| 2 | 744242471 WE-SLM | WE-SLM | L501, L502 |
| 4 | CL10A106KP8NNNC 10u | C_0603_1608Metric | C201, C216, C614, C619 |
| 2 | GRM1555C1H100FA01D 10p | C_0402_1005Metric | C202, C205 |
| 17 | CL05B104KO5NNNC 100n | C_0402_1005Metric | C203, C204, C206, C208, C210, C213, C215, C405 +9 |
| 2 | 0603B225K250NT 2u2 | C_0603_1608Metric | C207, C209 |
| 5 | CC0402KRX7R9BB103 10n | C_0402_1005Metric | C211, C401, C402, C501, C502 |
| 7 | CL05A105KO5NNNC 1u | C_0402_1005Metric | C212, C214, C301, C613, C615, C618, C620 |
| 2 | 1206B475K500NT 4.7u | C_1206_3216Metric | C403, C404 |
| 2 | EEEFT1V101AP 100u | CP_Elec_6.3x5.8 | C407, C408 |
| 6 | CL21B105KBFNNNE 1u | C_0805_2012Metric | C409, C410, C411, C412, C413, C414 |
| 6 | CL21A226MAQNNNE 22u | C_0805_2012Metric | C419, C420, C421, C422, C423, C424 |
| 4 | 0402CG101J500NT 100p | C_0402_1005Metric | C503, C504, C505, C506 |
| 2 | CL10B224KA8NNNC 220n | C_0603_1608Metric | C507, C513 |
| 1 | CL05A224KA5NNNC 220n | C_0402_1005Metric | C508 |
| 4 | CL21C222JBFNNNE 2200p | C_0805_2012Metric | C509, C510, C511, C512 |
| 4 | 0402CG200J500NT 20p | C_0402_1005Metric | C601, C602, C605, C610 |
| 2 | CC0402JRX7R9BB472 4.7n | C_0402_1005Metric | C603, C604 |
| 4 | 0402CG200J500NT 20pf | C_0402_1005Metric | C606, C607, C608, C609 |
| 4 | CL31A106KBHNNNE 10u | C_1206_3216Metric | C701, C702, C703, C704 |
| 4 | 0402WGF1001TCE 1k | R_0402_1005Metric | R201, R409, R410, R501 |
| 20 | 0402WGF1001TCE 10k | R_0402_1005Metric | R202, R208, R209, R212, R507, R508, R509, R514 +12 |
| 1 | 0402WGF0000TCE 0R | R_0402_1005Metric | R203 |
| 5 | 0402WGF220JTCE 22R | R_0402_1005Metric | R204, R205, R206, R207, R210 |
| 1 | 25121WJ0000T4E 0R | R_2512_6332Metric | R211 |
| 4 | FRC1206J220 TS 22R | R_1206_3216Metric | R301, R302, R303, R304 |
| 1 | FRC1206J220 TS 2.2k | R_1206_3216Metric | R305 |
| 2 | 0402WGF3302TCE 33k | R_0402_1005Metric | R401, R404 |
| 9 | 0402WGF1003TCE 100k | R_0402_1005Metric | R402, R403, R405, R506, R515, R707, R708, R709 +1 |
| 2 | 0402WGF2212TCE 22.1k | R_0402_1005Metric | R406, R408 |
| 1 | FRC0402F1623TS 162k | R_0402_1005Metric | R407 |
| 4 | 0603WAF4990T5E 499 | R_0603_1608Metric | R502, R503, R504, R505 |
| 4 | C18019 51 | R_1206_3216Metric | R510, R511, R512, R513 |
| 18 | 0805W8F0000T5E 0R | R_0805_2012Metric | R516, R517, R518, R519, R520, R521, R522, R523 +10 |
| 4 | HP06W2J0000T5E 0R | R_1206_3216Metric | R603, R604, R605, R606 |
| 4 | AC1210FR-0760R4L 60.4 | R_1210_3225Metric | R609, R610, R611, R612 |
Motherboard design files
The KiCad project lives in the JacobParent7/FSAE_LSU_BMS repository on GitHub; these links point at the commit this page was built from.
Motherboard: common questions
What microcontroller does the Motherboard use?
The Motherboard is built around the STM32F205RBT6, from the STM32 family.
How big is the Motherboard PCB?
The Motherboard measures 115 × 125 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the Motherboard?
232 components, from 61 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 Motherboard design files?
From the JacobParent7/FSAE_LSU_BMS 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 Motherboard design in my own project?
The repository has no license, so all rights stay with JacobParent7. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Motherboard 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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