VCU V3.3
About the VCU V3.3 PCB
VCU V3.3 is an open source AVR/Arduino PCB design by HKUST-Red-Bird-Racing-EVRT, published on GitHub. It is a 2-layer board measuring 114 × 95 mm, with 145 components from 73 distinct parts.
Its main chip is the BQ76940DBT, from the AVR/Arduino family. Other key parts include the ISO1050DUB, B0505MT-1WR4, MCP2515-xST, TJA1051T and 40106. By type, the board carries 63 resistors, 41 capacitors, 14 ICs, 8 transistors, 4 crystals and 4 diodes.
From the project
ELEC Github Repo for Gen 6
Main components on the VCU V3.3
VCU V3.3 bill of materials (BOM)
145 components, 73 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ76940DBT ATmega328P-A | TQFP-32_7x7mm_P0.8mm_L | U1 |
| 1 | ISO1050DUB MCP2515-xST | TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | B0505MT-1WR4 TJA1051T | SOIC-8_3.9x4.9mm_P1.27mm_RMC_Handsolder | U5 |
| 2 | MCP2515-xST | TSSOP-20_4.4x6.5mm_P0.65mm | U8, U14 |
| 2 | TJA1051T | SOIC-8_3.9x4.9mm_P1.27mm_RMC_Handsolder | U9, U15 |
| 1 | 40106 | SOIC127P600X175-14N | U10 |
| 1 | ELQ3H7 | SOIC-16_3.9x9.9mm_P1.27mm_Handsolder | U11 |
| 1 | LTV-847S | SOIC-16_3.9x9.9mm_P1.27mm_Handsolder | U12 |
| 3 | SGM722 | SOIC-8_3.9x4.9mm_P1.27mm_RMC_Handsolder | U13, U16, U17 |
| 1 | TPS54302 | SOT-23-6_Handsoldering_Extended_RMC | U18 |
| 1 | KY2N7002 MMBT3904 | SOT-23 | Q1 |
| 1 | AO3402 BSC030P03NS3 | Infineon_PG-TDSON-8_6.15x5.15mm | Q2 |
| 1 | NCE60P04Y MMBT3904 | SOT-23 | Q3 |
| 3 | BSC030P03NS3 | Infineon_PG-TDSON-8_6.15x5.15mm | Q4, Q6, Q8 |
| 2 | MMBT3904 | SOT-23 | Q5, Q7 |
| 1 | 20MHZ 16MHz | Crystal_HC49-U_Vertical_W_SMD_Handolder | Y1 |
| 1 | 8MHZ 20MHz | Crystal_HC49-U_Vertical_W_SMD_Handolder | Y2 |
| 2 | 20MHz | Crystal_HC49-U_Vertical_W_SMD_Handolder | Y3, Y4 |
| 1 | 559010274 ~ | HD241_GF30 | J1 |
| 1 | CONN_02X03_ODD_EVEN ~ | HD241_24pin | J2 |
Show 53 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_01X05 AVR-ISP-6 | PinHeader_2x03_P2.54mm_Vertical_handsolder | J3 |
| 5 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | CA1, CA2, CA3, CA4, CA5 |
| 1 | Fuse | Fuse_1210_3225Metric_Pad1.42x2.65mm_HandSolder | F3 |
| 1 | SW_Push | SW_PUSH_6mm | SW1 |
| 3 | 1N4148W LED | LED_0805_2012Metric_Pad1.45x1.40mm_HandSolder | D2, D3, D4 |
| 1 | BAS85 LED | LED_0805_2012Metric_Pad1.45x1.40mm_HandSolder | D5 |
| 1 | 10uH | L_6.3x6.3_H3 | L2 |
| 3 | 1UF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C1, C3, C4 |
| 2 | 1UF 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C2, C7 |
| 2 | 1UF 20pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C5, C6 |
| 1 | 4.7UF 12pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C16 |
| 1 | 1UF 12pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C17 |
| 2 | 12PF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C18, C19 |
| 4 | 100NF 12pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C26, C27, C33, C34 |
| 2 | 22PF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C28, C29 |
| 2 | 10UF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C30, C35 |
| 2 | 4.7UF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C31, C32 |
| 2 | 22UF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C36, C37 |
| 14 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C38, C39, C41, C43, C44, C45, C46, C47 +6 |
| 1 | 47uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C40 |
| 1 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C42 |
| 2 | 22uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C48, C49 |
| 2 | 10M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R3, R71 |
| 1 | 4k7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R4 |
| 15 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R5, R6, R7, R9, R10, R11, R13, R14 +7 |
| 3 | 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R8, R12, R81 |
| 1 | 500K 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R15 |
| 1 | 10M 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R16 |
| 5 | 10K 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R17, R19, R33, R34, R35 |
| 1 | 4.7K 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R18 |
| 1 | 4.7K 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R20 |
| 1 | 120R 10M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R21 |
| 1 | 4.7K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R22 |
| 1 | 174K 120R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R23 |
| 1 | 10K 10M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R30 |
| 1 | 120R 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R31 |
| 1 | 10K 120R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R32 |
| 1 | 10K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R36 |
| 1 | 100K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R37 |
| 1 | 22.1K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R38 |
| 1 | 511K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R39 |
| 1 | 105K 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R40 |
| 1 | 100K 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R41 |
| 1 | 301K 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R42 |
| 8 | 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R45, R46, R47, R48, R49, R50, R51, R52 |
| 2 | 680R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R70, R75 |
| 1 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R72 |
| 1 | 120R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R73 |
| 1 | 2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R76 |
| 2 | 330R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R77, R78 |
| 1 | 49R9 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R80 |
| 1 | 13k3 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R82 |
| 3 | 47k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R83, R84, R85 |
VCU V3.3 design files
The KiCad project lives in the HKUST-Red-Bird-Racing-EVRT/GEN6_ELEC repository on GitHub; these links point at the commit this page was built from.
VCU V3.3: common questions
What microcontroller does the VCU V3.3 use?
The VCU V3.3 is built around the BQ76940DBT, from the AVR/Arduino family.
How big is the VCU V3.3 PCB?
The VCU V3.3 measures 114 × 95 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the VCU V3.3?
145 components, from 73 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 VCU V3.3 design files?
From the HKUST-Red-Bird-Racing-EVRT/GEN6_ELEC 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 VCU V3.3 design in my own project?
The repository has no license, so all rights stay with HKUST-Red-Bird-Racing-EVRT. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the VCU V3.3 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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