Parkbrake
About the Parkbrake PCB
Parkbrake is an open source STM32 PCB design by mumme74, published on GitHub. It is a 2-layer board measuring 101.6 × 114.3 mm, with 353 components from 91 distinct parts.
Its main chip is the STM32F373RBTx, from the STM32 family. Other key parts include the 74LVC00, 74LVC08, LM2903, IRS2304 and ZXCT1082. By type, the board carries 120 resistors, 101 capacitors, 41 diodes, 35 ICs, 33 transistors and 14 jumpers.
From the project
Electronics systems for a car transporter
This repository is for the electronics systems used to make car transporter
Main components on the Parkbrake
Parkbrake bill of materials (BOM)
353 components, 91 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 74LVC00 | TSSOP-14_4.4x5mm_Pitch0.65mm | U1, U3 |
| 3 | 74LVC08 | TSSOP-14_4.4x5mm_Pitch0.65mm | U2, U4, U35 |
| 4 | LM2903 | TSSOP-8_4.4x3mm_Pitch0.65mm | U5, U9, U13, U17 |
| 8 | IRS2304 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U6, U8, U10, U12, U14, U16, U18, U20 |
| 4 | ZXCT1082 | SOT-23-5 | U7, U11, U15, U19 |
| 1 | MIC2619 | SOT-23-6 | U21 |
| 1 | MC34063 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U22 |
| 1 | LD1117S33CTR | SOT-223 | U23 |
| 1 | CAT25160_EEPROM | TSSOP-8_4.4x3mm_Pitch0.65mm | U24 |
| 1 | STM32F373RBTx | LQFP-64_10x10mm_Pitch0.5mm | U25 |
| 1 | SN65HVD1050D | SOIC-8_3.9x4.9mm_Pitch1.27mm | U26 |
| 1 | SN74LVC245ADBR | SSOP-20_5.3x7.2mm_Pitch0.65mm | U27 |
| 1 | SN74HC20 | TSSOP-14_4.4x5mm_Pitch0.65mm | U28 |
| 1 | SN74HC02 | TSSOP-14_4.4x5mm_Pitch0.65mm | U29 |
| 1 | SN74HC132 | TSSOP-14_4.4x5mm_Pitch0.65mm | U30 |
| 2 | MAX232 | TSSOP-16_4.4x5mm_Pitch0.65mm | U31, U32 |
| 2 | NCV1124 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U33, U34 |
| 3 | BSS138 | SOT-323 | Q1, Q2, Q31 |
| 2 | P-ch -40V 0.0035ohm | TO-252-2Lead | Q3, Q4 |
| 2 | BSS308 | SOT-23 | Q5, Q6 |
Show 71 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 9 | NX3008CBKS | SOT-363 | Q7, Q12, Q13, Q18, Q19, Q24, Q25, Q30 +1 |
| 16 | IPD031N06L3 G | TO-252-2Lead | Q8, Q9, Q10, Q11, Q14, Q15, Q16, Q17 +8 |
| 1 | NTS4173 | SOT-323 | Q32 |
| 1 | 24Mhz | ABM3 | Y1 |
| 1 | Conn48pin | Conn48pin | P1 |
| 1 | JTAG | Socket_Strip_Straight_1x08 | P2 |
| 1 | UART | Socket_Strip_Straight_1x03 | P3 |
| 1 | BOOT0 | R_0805_HandSoldering | JP1 |
| 1 | Jumper_NO_Small | R_0805_HandSoldering | JP2 |
| 1 | soft_L_out+ | R_0805_HandSoldering | JP3 |
| 1 | L_passth+ | R_0805_HandSoldering | JP4 |
| 1 | LF+_to_in | R_0805_HandSoldering | JP5 |
| 1 | soft_L_out- | R_0805_HandSoldering | JP6 |
| 1 | L_passth- | R_0805_HandSoldering | JP7 |
| 1 | LF-_to_in | R_0805_HandSoldering | JP8 |
| 1 | soft_R_out+ | R_0805_HandSoldering | JP9 |
| 1 | RF_passth+ | R_0805_HandSoldering | JP10 |
| 1 | RF+_to_in | R_0805_HandSoldering | JP11 |
| 1 | soft_R_out- | R_0805_HandSoldering | JP12 |
| 1 | RF_passth- | R_0805_HandSoldering | JP13 |
| 1 | RF-_to_in | R_0805_HandSoldering | JP14 |
| 3 | VR | R_1206 | VR1, VR2, VR3 |
| 3 | 10v | SOD-323 | D1, D2, D5 |
| 22 | 1n4148w | SOD-323 | D3, D4, D14, D15, D16, D17, D18, D19 +14 |
| 1 | LF_Release | LED_0805 | D6 |
| 1 | LF_Tighten | LED_0805 | D7 |
| 1 | LR_Release | LED_0805 | D8 |
| 1 | LR_Tighten | LED_0805 | D9 |
| 1 | RF_Release | LED_0805 | D10 |
| 1 | RF_tighten | LED_0805 | D11 |
| 1 | RR_Release | LED_0805 | D12 |
| 1 | RR_Tighten | LED_0805 | D13 |
| 1 | min 40V 1A | SOD-123 | D26 |
| 1 | min 1.5A | SOD-123 | D27 |
| 6 | 3.3V | SOD-323 | D28, D29, D31, D32, D33, D34 |
| 1 | 10uH | inductor_sd54 | L1 |
| 1 | 33uH | inductor_sd54 | L2 |
| 42 | 100n | C_0805 | C1, C2, C3, C4, C5, C6, C9, C11 +34 |
| 28 | 1u | C_1206 | C7, C10, C14, C17, C21, C24, C28, C31 +20 |
| 4 | 220nF | C_1206 | C8, C15, C22, C29 |
| 1 | 470p | C_0805 | C35 |
| 1 | 10u | TantalC_SizeC_EIA-6032_Wave | C36 |
| 1 | 680u | TantalC_SizeD_EIA-7343_Wave | C38 |
| 5 | 10u | CP_0805 | C40, C41, C92, C93, C100 |
| 6 | 1n | C_0805 | C43, C58, C63, C96, C97, C99 |
| 2 | 26p | C_0805 | C44, C45 |
| 1 | 4.7u | CP_0805 | C46 |
| 4 | 10n | C_0805 | C49, C51, C53, C55 |
| 2 | 33uF | CP_1206 | C72, C73 |
| 4 | 47n | C_0805 | C83, C84, C85, C86 |
| 43 | 10k | R_0805 | R1, R2, R5, R10, R11, R12, R13, R16 +35 |
| 10 | 1k | R_0805 | R3, R4, R6, R7, R8, R9, R84, R99 +2 |
| 16 | 10 | R_0805 | R14, R15, R25, R26, R31, R32, R42, R43 +8 |
| 4 | 43 | R_0805 | R17, R34, R51, R68 |
| 8 | 100 | R_0805 | R19, R23, R36, R40, R53, R57, R70, R74 |
| 16 | 0.002 | R_1206 | R20, R21, R22, R24, R37, R38, R39, R41 +8 |
| 1 | 0.150 1/2W | R_1206 | R79 |
| 2 | 220k | R_0805 | R80, R82 |
| 1 | 12k | R_0805 | R81 |
| 1 | 3k | R_0805 | R85 |
| 1 | 255 | R_0805 | R87 |
| 1 | 120 | R_0805 | R89 |
| 2 | 330 | R_0805 | R92, R93 |
| 1 | 560 | R_0805 | R102 |
| 1 | 2.2k | R_Array_Concave_4x0603 | R103 |
| 2 | 1k | R_Array_Concave_4x0603 | R104, R110 |
| 1 | 100k | R_0805 | R105 |
| 1 | 2k | R_0805 | R107 |
| 2 | 1M | R_0805 | R108, R109 |
| 4 | 15k | R_0805 | R111, R112, R113, R114 |
| 2 | 16.9k | R_0805 | R115, R116 |
Parkbrake design files
The KiCad project lives in the mumme74/CarTransporter repository on GitHub; these links point at the commit this page was built from.
Parkbrake: common questions
What microcontroller does the Parkbrake use?
The Parkbrake is built around the STM32F373RBTx, from the STM32 family.
How big is the Parkbrake PCB?
The Parkbrake measures 101.6 × 114.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Parkbrake?
353 components, from 91 distinct parts. The full bill of materials is listed on this page.
Where can I download the Parkbrake design files?
From the mumme74/CarTransporter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Parkbrake design in my own project?
The repository has no license, so all rights stay with mumme74. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Parkbrake 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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