Megaboard Front V3
About the Megaboard Front V3 PCB
Megaboard Front V3 is an open source STM32 PCB design by Kolmanpg, published on GitHub. It is a 4-layer board measuring 152.4 × 88.9 mm, with 195 components from 83 distinct parts.
Its main chip is the C7955, from the STM32 family. Other key parts include the C7950, MAX3232, C12084, C5605 and BU4S71G2-TR. By type, the board carries 87 resistors, 54 capacitors, 17 ICs, 17 diodes, 4 transistors and 4 jumpers.
It belongs with the power & battery and test & measurement designs in this gallery.
From the project
This repository highlights my work as an Electrical Engineering student and project manager for Penn State’s Formula SAE Electric Team, Nittany Motorsports.
Welcome to my portfolio of PCB design projects! This repository showcases my skills and experience in PCB design, focusing on projects done for my Formula SAE Electric Team, Nittany Motorsports!
Main components on the Megaboard Front V3
Megaboard Front V3 bill of materials (BOM)
195 components, 83 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C7955 STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U1 |
| 5 | C7950 LM358 | SOIC-8_3.9x4.9mm_P1.27mm | U2, U3, U4, U5, U8 |
| 1 | MAX3232 | SOIC-16_3.9x9.9mm_P1.27mm | U6 |
| 1 | C12084 SN65HVD230 | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | C7950 AMS1117-3.3 | SOT-223-3_TabPin2 | U9 |
| 1 | C7955 TPS5431DDA | TI_SO-PowerPAD-8_ThermalVias | U10 |
| 1 | C5605 74HC14 | SOIC-14_3.9x8.7mm_P1.27mm | U11 |
| 4 | C7955 LM393 | SOIC-8_3.9x4.9mm_P1.27mm | U12, U13, U14, U17 |
| 1 | BU4S71G2-TR | SOT95P280X125-5N | U15 |
| 1 | HEF4081BT,653 | SOIC127P600X175-14N | U16 |
| 3 | C130879 MMBF170 | SOT-23 | Q1, Q2, Q3 |
| 1 | MMFTP2319 | SOT-23 | Q4 |
| 1 | CRYSTAL_GND24_SMALL Crystal_GND24_Small | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | CRYSTAL_GND23_SMALL Crystal_GND23_Small | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | CONN_01X06 Conn_01x06 | PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | 5007621001 | CONN_500762-1001_MOL | J2 |
| 1 | DNP NC | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 3 | SOLDERJUMPER_3_OPEN SolderJumper_3_Open | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2, JP3, JP4 |
| 1 | DSP2A-DC12V | RELAY_DSP2A_PAN | K1 |
| 2 | C83686 1k | Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
Show 63 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C83686 100k | Potentiometer_Bourns_3296W_Vertical | RV3, RV4 |
| 1 | C318884 SW_MEC_5G | SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | SW_MEC_5G | SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 8 | 1PS76SB17-115 | SOD323_F_ | D1, D2, D3, D4, D5, D6, D7, D8 |
| 4 | C84256 NCD0805R1 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D9, D12, D13, D16 |
| 1 | NUP2105L | SOT-23 | D10 |
| 1 | SS34 | D_SMA | D11 |
| 1 | C95872 1N4004 | D_SMA_Handsoldering | D14 |
| 1 | C2297 LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D15 |
| 1 | HPZR-C14X | HPZRC14X | D17 |
| 1 | CDRH104RNP-150NC 15uH | IND_CDRH104_SUM | L1 |
| 8 | 0.1U 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3, C4, C5, C6, C11, C12, C29 |
| 1 | 4.7U 4.7u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 10 | C28233 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C8, C9, C10, C22, C23, C27, C30 +2 |
| 2 | C28323 DNP | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C14 |
| 10 | C28323 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15, C16, C17, C18, C19, C20, C34, C35 +2 |
| 1 | C28233 _MHz | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C21 |
| 2 | DNP C_Small | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C24, C28 |
| 1 | C28323 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C25 |
| 1 | C28323 _MHz | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C26 |
| 2 | C35216 1n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C32, C48 |
| 1 | C15850 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C36 |
| 6 | C35216 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C37, C41, C46, C49, C50, C51 |
| 4 | C15850 10u | CP_EIA-3216-18_Kemet-A | C38, C39, C42, C43 |
| 1 | C15850 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C40 |
| 1 | 10TPB220M 220u | PCAP_TPB_D4_PAN | C45 |
| 1 | C13585 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C47 |
| 2 | C15850 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C53, C54 |
| 1 | C17630 2k2 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | C17630 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 6 | C23255 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4, R7, R8, R9, R10 |
| 6 | C23255 5k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R44, R45, R79, R83 |
| 7 | C23255 3k8 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R12, R15, R16, R17, R18, R64 |
| 6 | C23255 9.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R14, R46, R47, R82, R84 |
| 1 | C706418 200 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19 |
| 2 | C23255 0R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R21 |
| 6 | C23255 82 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R23, R24, R25, R26, R27 |
| 1 | C21189 0R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R28 |
| 1 | 15K 15k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29 |
| 1 | C23255 66 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R30 |
| 1 | 14K 14k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31 |
| 1 | 453 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R32 |
| 1 | C22787 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33 |
| 2 | 1M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R34, R35 |
| 8 | C17902 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36, R48, R49, R50, R55, R65, R66, R69 |
| 4 | C23186 82k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R37, R38, R51, R77 |
| 4 | C22809 18k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R39, R40, R52, R78 |
| 2 | C706418 15k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R41, R56 |
| 2 | C706423 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R42, R57 |
| 2 | C706418 47k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R43, R58 |
| 1 | C17520 200 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R53 |
| 1 | C73040 68k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R54 |
| 4 | C17900 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R59, R60, R71, R87 |
| 1 | C17540 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R61 |
| 1 | C17540 3.24k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R62 |
| 1 | C17630 330R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R63 |
| 1 | C4410 2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R67 |
| 1 | C4410 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R68 |
| 1 | C4410 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R70 |
| 1 | C17909 300 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R72 |
| 2 | C706423 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R73, R74 |
| 4 | C706418 DNP | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R75, R76, R80, R81 |
| 2 | C17414 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R85, R86 |
Megaboard Front V3 design files
The KiCad project lives in the Kolmanpg/Kolman-Puterman repository on GitHub; these links point at the commit this page was built from.
Megaboard Front V3: common questions
What microcontroller does the Megaboard Front V3 use?
The Megaboard Front V3 is built around the C7955, from the STM32 family.
How big is the Megaboard Front V3 PCB?
The Megaboard Front V3 measures 152.4 × 88.9 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the Megaboard Front V3?
195 components, from 83 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 Megaboard Front V3 design files?
From the Kolmanpg/Kolman-Puterman 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 Megaboard Front V3 design in my own project?
The repository has no license, so all rights stay with Kolmanpg. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Megaboard Front V3 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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