2 layers100 × 100 mm
2 layers
BSPD MARKO V2
Markolof/FSAE-BSPD1BSPD (Brake System Plausibility Device)
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 105
- Nets
- 53
- Pads
- 257
- Tracks, vias
- 1, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Feb 2026
- Updated
- 12 May 2026
Overview
BSPD MARKO V2 is an open-source printed circuit board by Markolof, from the Markolof/FSAE-BSPD repository on GitHub. It is a 2-layer board with 105 parts on 53 nets, routed with 1 track and 0 vias.
It is built around the NE555N, B120-E3 and CDBA340-HF. Its parts include 43 resistors, 21 capacitors, 8 ICs, 7 diodes and 6 connectors.
Main components
3
NE555N
DIP-80℃~+70℃ DIP-8 555 Timers / Counters ROHSHGSEMITimers / Counters
B120-E3
DO-214AC(SMA)-65℃~+125℃ 1 Independent 1A 200uA 20V 30A 520mV@1A DO-214AC(SMA) Schottky Diodes ROHSVishay IntertechnologySchottky DiodesCDBA340-HF
SMA(DO-214AC)-50℃~+150℃ 1 Independent 3A 40V 500mV@3A 500uA@40V 70A SMA(DO-214AC) Schottky Diodes ROHSComchipSchottky Diodes
README
README.mdBSPD with SCS — MES Racing Rev 2.0 | Formula Student Rule Compliant Brake System Plausibility Device with Short Circuit Sense. Opens the shutdown circuit if brake and motor current are simultaneously active for more than 0.5 seconds. Key ICs
LM293 × 4 — comparators (brake & current thresholds) NE555 — 0.5s timing SN74HC27 — fault logic LM358 — buffering uA7805 — 5V regulation
Adjustable Thresholds RV1/RV2 — brake | RV3/RV4/RV5 — current
Parts
105| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R7, R9, R11, R16, R17, R21, R22, R24, R26, R27, R29, R30 |
| 14 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R10, R12, R13, R14, R15, R18, R25, R28, R32, R33, R35, R36, R37 |
| 9 | 100n | Crystal:Resonator-2Pin_W7.0mm_H2.5mm | C5, C6, C9, C13, C15, C16, C19, C20, C21 |
| 8 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R19, R27, R34, R38, R39, R42 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_4.0x4.0mm | TP1, TP2, TP2, TP3, TP4, TP6, TP8, TP14 |
| 5 | 100k | Potentiometer_THT:Potentiometer_Bourns_3266Y_Vertical | RV1, RV2, RV3, RV4, RV5 |
| 5 | 10n | Crystal:Resonator-2Pin_W7.0mm_H2.5mm | C1, C2, C11, C14, C18 |
| 5 | LM293_COMP | Package_DIP:CERDIP-8_W7.62mm_SideBrazed_LongPads_Socket | U2, U3, U4, U6, U8 |
| 4 | 51k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R23, R31 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H3, H3, H3, H3 |
| 3 | 1N5822 | Diode_THT:D_DO-201AD_P15.24mm_Horizontal | D3, D4, D5 |
| 2 | 01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J6, J12 |
| 2 | 10u | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C12, C17 |
| 2 | 15p | Crystal:Resonator-2Pin_W7.0mm_H2.5mm | C7, C8 |
| 2 | 250 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R40, R41 |
| 2 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J3, J4 |
| 1 | 0.1u | Crystal:Resonator-2Pin_W7.0mm_H2.5mm | C4 |
| 1 | 0.33u | Crystal:Resonator-2Pin_W7.0mm_H2.5mm | C3 |
| 1 | 01x01P | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J2 |
| 1 | 15u | Crystal:Resonator-2Pin_W7.0mm_H2.5mm | C10 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D7 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2 |
| 1 | 2N3904 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | 910k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R20 |
| 1 | B120-E3 | Diode_THT:D_DO-201AE_P15.24mm_Horizontal | D1 |
| 1 | CDBA340-HF | Diode_THT:D_DO-201AE_P15.24mm_Horizontal | D8 |
| 1 | ED555_8DS | KiCad:ED5558DS | J1 |
| 1 | NE555N | Package_DIP:CERDIP-8_W7.62mm_SideBrazed_LongPads_Socket | U7 |
| 1 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1 |
| 1 | SN74HC27NE4 | Package_DIP:CERDIP-14_W7.62mm_SideBrazed_LongPads_Socket | U5 |
| 1 | TP | TestPoint:TestPoint_Pad_4.0x4.0mm | TP5 |
| 1 | uA7805 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U1 |
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Questions
What parts does the BSPD MARKO V2 use?
105 parts, built around the NE555N, B120-E3 and CDBA340-HF. 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 BSPD MARKO V2 KiCad files?
From the Markolof/FSAE-BSPD repository on GitHub, at the commit this page was made from: the board is V2/BSPD_MARKO_V2/BSPD_MARKO_V2.kicad_pcb and its schematic BSPD_MES_RACING_V3/BSPD_MES_RACING_V3/BSPD_MES_RACING_V3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BSPD MARKO V2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Markolof before reusing the design.