2 layers98 × 79.5 mm
Flex over can
twisted-builds-llc/sloppy_holley_flex-over-can
CAN bus input/output module for Holley Terminator X (also HP/Dominator class ECUs).
86 parts1
2 layers66 × 42 mm
A safety device which detects hard braking and acceleration and shuts the engine down.
- Size
- 66 × 42 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 46
- Pads
- 225
- Tracks, vias
- 365, 78
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Apr 2026
- Updated
- 18 Sep 2026
Overview
Bspd is an open-source printed circuit board by Formula-Trinity, from the Formula-Trinity/bspd repository on GitHub. It is a 2-layer board of 66 × 42 mm with 81 parts on 46 nets, routed with 365 tracks and 78 vias.
It is built around the LM339, 74AHC1G32GW and 74HC00D, with the 74LVC2G00GT, 74LVC2G04DW and LM311 among its other parts. Its parts include 30 resistors, 17 capacitors, 8 ICs, 7 diodes and 3 transistors.
Main components
11
LM339
SOP-140℃~+70℃ 1.1mA 1.5mV 150ns 2.3nA 2V~32V 32V 57nA DTL、TTL、CMOS Four channels Open Collector SOP-14 Comparators ROHSJSMSEMIComparators
74AHC1G32GW
SOT-353-40℃~+125℃ 1 1.5V~3.85V 1.9V、2.9V、3.94V、4.4V 100mV、100mV、100mV、550mV 1uA 2 2V~5.5V 500mV~1.65V 7.5ns@5V,50pF 74AHC Series 8mA 8mA OR Gate Overvoltage-tolerant input SOT-353 Logic Gates ROHSNexperiaLogic Gates74HC00D
SOP-14-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、3.7V、5.9V 100mV、400mV、400mV 2 2V~6V 4 40uA 5.2mA 5.2mA 500mV~1.8V 74HC Series 7ns@6V,50pF NAND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
74LVC2G00GT
XSON-8(1x2)-40℃~+125℃ 1.65V~5.5V 1.7V~2V 2 2 3.3ns@5V,50pF 32mA 32mA 4uA 700mV~800mV 74LVC Series NAND Gate XSON-8(1x2) Logic Gates ROHSNexperiaLogic Gates
74LVC2G04DW
SOT-363-40℃~+125℃ 1.65V~5.5V 1.7V~2V 10uA 2 2 3.8ns@5V,50pF 32mA 32mA 700mV~800mV 74LVC SOT-363 Inverters ROHSDiodes IncorporatedGates And Inverters
LM311
SOP-80℃~+70℃ 1 1.7nA 2.4mA 200ns 2mV 36V 45nA 5V~30V TTL、CMOS ±15V SOP-8 Comparators ROHSGcoreComparators
MMBT2222A
SOT-23-55℃~+150℃ 1 NPN 100 100nA 1V 300MHz 300mW 40V 600mA 6V NPN Standalone SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)BSS84
SOT-23-55℃~+150℃ 1 P-Channel 130mA 2.8pF 24.6pF 2V 3.2Ω@5V 300mW 4.7pF 50V 590pC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
G5Q-1A
Miniature Power RelayOmronUncategorised
SMF18A
SOD-123FL-55℃~+150℃ 18V 1uA 200W@10/1000us 22.1V 29.2V 6.8A@10/1000us IEC 61000-4-2 TVS Unidirectional SOD-123FL ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
TPS7B6950QDCYRQ1
SOT-223-4-40℃~+125℃@(Tj) 1 150mA 15uA 40V 450mV@(100mA) 5V 60dB@(100Hz) Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Short Circuit Protection SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdBSPD
A safety device which detects hard braking and acceleration and shuts the engine down.
Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100n | Capacitor_SMD:C_0402_1005Metric | C3, C4, C5, C7, C8, C9, C12, C13, C14, C17 |
| 8 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R8, R16, R28, R29 |
| 8 | 10k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R9, R12, R14, R20, R30 |
| 5 | 470 | Resistor_SMD:R_0603_1608Metric | R23, R24, R25, R26, R27 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R17, R21, R22 |
| 2 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 10u | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 1M | Resistor_SMD:R_0603_1608Metric | R13, R19 |
| 2 | LM339 | lm339:SOIC127P600X175-14N | U1, U2 |
| 2 | MMBT2222A | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 2 | Trimmer | Potentiometer_SMD:Potentiometer_Bourns_3314J_Vertical | RV1, RV2 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | 12n | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 150mA | Fuse:Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1 |
| 1 | 1N4007 | Diode_SMD:D_SMA | D1 |
| 1 | 2.2k | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 2.2u | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 282834-6 | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-6_1x06_P2.54mm_Horizontal | J2 |
| 1 | 330k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 39k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 74AHC1G32 | Package_TO_SOT_SMD:SOT-23-5 | U8 |
| 1 | 74HC00 | 74HC00D_653:SOIC127P600X175-14N | U4 |
| 1 | 74LVC2G00 | SN74LVC2G00:SOP50P310X90-8N | U3 |
| 1 | 74LVC2G04 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | BPS | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | BPS_Fault | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | COMP | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | G5Q-1A | Relay_THT:Relay_SPST_Omron-G5Q-1A | K2 |
| 1 | LM311 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | LM555xM | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | LOGO | LOGO | G*** |
| 1 | OUT | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | OUTPUT | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | Power_Led | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | SCS_Fault | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | SMF18A | Diode_SMD:D_SMF | D8 |
| 1 | TIME | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | TPS | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | TPS7B6950QDCYRQ1 | TPS7B6950QDCYRQ1:VREG_TPS7B6950QDCYRQ1 | VR1 |
| 1 | TPS_Fault | LED_SMD:LED_0603_1608Metric | D4 |
Questions
How big is the Bspd PCB?
It measures 66 × 42 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bspd use?
81 parts, built around the LM339, 74AHC1G32GW, 74HC00D and 74LVC2G00GT. 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 KiCad files?
From the Formula-Trinity/bspd repository on GitHub, at the commit this page was made from: the board is BSPD/BSPD.kicad_pcb and its schematic BSPD/BSPD.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bspd design in my own project?
Its repository states no licence, so its author keeps all rights: ask Formula-Trinity before reusing the design.
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