VCU
About the VCU PCB
VCU is an open source STM32 PCB design by formulaslug, published on GitHub. It is a 4-layer board measuring 92.5 × 101.6 mm, with 202 components from 61 distinct parts.
Its main chip is the STM32F446RET6, from the STM32 family. Other key parts include the AP63205WU-7, MIC5504-3.3YM5-TR, MCP6004T-I/SL, SN74HCS32DR and SN74HCS08DR. By type, the board carries 92 resistors, 53 capacitors, 20 ICs, 14 diodes, 10 transistors and 4 connectors.
From the project
Electrical Design Repository for fs-4 schematics and PCBs
Please complete KiCad training before beginning or working on any projects in this repository.
Only edit another person's work if you have spoke about it with them first and they have given you permission. This applies to Leads and Captains as well.
Contact Cole Lewis, Nathaniel Platt, or Wesley Rodriguez Kronmiller or Jack Nystrom for information/help relating to this repository.
Main components on the VCU
VCU bill of materials (BOM)
202 components, 61 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP63205WU-7 AP63205WU | TSOT-23-6 | U1 |
| 1 | MIC5504-3.3YM5-TR MIC5504-3.3YM5 | SOT-23-5 | U2 |
| 5 | MCP6004T-I/SL MCP6004 | SOIC-14_3.9x8.7mm_P1.27mm | U6, U7, U8, U11, U24 |
| 2 | SN74HCS32DR | SOIC-14_3.9x8.7mm_P1.27mm | U9, U12 |
| 1 | SN74HCS08DR | SOIC-14_3.9x8.7mm_P1.27mm | U10 |
| 2 | SN74HC14DR | SOIC-14_3.9x8.7mm_P1.27mm | U13, U15 |
| 1 | SZNUD3124DMT1G | SC-74-6_1.55x2.9mm_P0.95mm | U14 |
| 1 | LM555CMX/NOPB LM555CMX | SOIC-8_3.9x4.9mm_P1.27mm | U16 |
| 2 | ISO1044BDR ISO1044BD | SOIC-8_ISO1044BD | U21, U22 |
| 1 | STLINK-V3MODS | MODULE_STLINK-V3MODS | U26 |
| 1 | STM32F446RET6 STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U27 |
| 1 | BME688 | BME_688_Bosch_LGA-8_3x3mm_P0.8mm_ClockwisePinNumbering | U28 |
| 1 | BNO086 | BNO086_LGA-28_5.2x3.8mm_P0.5mm | U29 |
| 10 | AO3400A | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +2 |
| 1 | ECS-240-8-37B-CKY-TR | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | ATS13-34PB2-BM01 | ATS13-34PB2-BM01 | J1 |
| 1 | SS-60400-023 Conn_01x08_Shielded | SS-60400-023 | J2 |
| 1 | ATS13-34PA2-BM01 | ATS13-34PA2-BM01 | J3 |
| 1 | FTSH-107-01-F-DV-K-P-TR | PinHeader_2x07_P1.27mm_Vertical_SMD | J4 |
| 1 | G6SK-2G DC24 G6SK-2G | Relay_DPDT_Omron_G6SK-2G | K2 |
Show 41 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | G6DN-1A DC12 G6DN-1A | RELAY_G6DN-1A | K3 |
| 2 | 3296W-1-103LF 3296W_10K | Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 1 | Y97KT23B5NAFP | SW_SPST_PTS647_Sx38 | SW5 |
| 1 | ABS07-32.768KHZ-T ABS07-120-32.768KHZ-T | Crystal_SMD_EuroQuartz_EQ161-2Pin_3.2x1.5mm_HandSoldering | XTAL1 |
| 3 | PMEG10020ELR-QX PMEG10020ELR | Nexperia_CFP3_SOD-123W | D1, D22, D24 |
| 10 | QBLP631-R3A | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2, D3, D4, D5, D6, D7, D8, D9 +2 |
| 1 | QBLP631-R3A LTST-S270KRKT | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D19 |
| 1 | FCM 1608KF-601T03 | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | SRP5030TA-4R7M 4.7uH | L_Bourns_SRP5030T | L1 |
| 1 | CL21A106KAYNNNE 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 3 | CL10B105KP8NNNC 1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4, C47 |
| 28 | CC0603JRX7R9BB104 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C10, C11, C12, C13, C14, C15, C17 +20 |
| 1 | CL21A476MQYNNNE 47uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 2 | CC0603KRX7R9BB153 0.015uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6, C7 |
| 2 | CC0603FRNPO9BN182 1.8nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 2 | CC0603JRX7R6BB105 1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16, C20 |
| 1 | CC0603KRX7R8BB224 220nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C23 |
| 1 | CC0603JRX7R7BB393 39nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C27 |
| 3 | CC0603JRX7R9BB393 39nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C28, C29, C30 |
| 4 | CL10A475KL8NRNC 4.7uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C35, C36, C39, C41 |
| 2 | CC0603DRNPO9BN6R8 6.8pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C37, C38 |
| 1 | CL10A106KO8NQNC 10uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C42 |
| 2 | CC0603FRNPO9BN120 12pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C55, C56 |
| 14 | AC0603FR-0710KL 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R11, R12, R17, R20, R45, R71 +6 |
| 8 | AC0603FR-07200KL 200k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R8, R24, R26, R32, R34, R36, R88 |
| 23 | AC0603FR-13100KL 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5, R9, R10, R25, R27, R33, R35 +15 |
| 3 | AC0603FR-07220KL 220k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7, R46 |
| 1 | AC0603FR-07191KL 191k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13 |
| 1 | AC0603FR-07120KL 120k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14 |
| 1 | AC0603FR-079K53L 9.53k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15 |
| 1 | AC0603FR-07169KL 169k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16 |
| 1 | AC0603FR-07430KL 430k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | AC0603FR-075K23L 5.23k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
| 12 | AC0603FR-07300RL 300 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R21, R22, R23, R28, R29, R30, R31, R38 +4 |
| 9 | RC0603FR-071KL 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R43, R44, R49, R50, R52, R61, R74, R77 +1 |
| 4 | AC0603FR-0AC0603FR-1012KL7120KL 12k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R55, R58, R59, R91 |
| 6 | AC0603FR-0720KL 20k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R56, R57, R60, R81, R85, R92 |
| 2 | AC0603FR-07120RL 120 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R62, R63 |
| 3 | AC0603FR-07300KL 300k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R66, R67, R70 |
| 1 | AC0603FR-0736KL 36k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R84 |
| 1 | AC0603FR-074K7L 4.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R89 |
VCU design files
The KiCad project lives in the formulaslug/fs-4-schematics repository on GitHub; these links point at the commit this page was built from.
- LayoutVCU/VCU.kicad_pcb
- SchematicVCU/VCU.kicad_sch
VCU: common questions
What microcontroller does the VCU use?
The VCU is built around the STM32F446RET6, from the STM32 family.
How big is the VCU PCB?
The VCU measures 92.5 × 101.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the VCU?
202 components, from 61 distinct parts. The full bill of materials is listed on this page.
Where can I download the VCU design files?
From the formulaslug/fs-4-schematics repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the VCU design in my own project?
The repository has no license, so all rights stay with formulaslug. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the VCU 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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