Megaboard Rear V3
About the Megaboard Rear V3 PCB
Megaboard Rear V3 is an open source ESP32 PCB design by Kolmanpg, published on GitHub. It is a 4-layer board measuring 155.3 × 110.3 mm, with 180 components from 72 distinct parts.
Its main chip is the C529581, from the ESP32 family. Other key parts include the C12084, C388175, C69336, C13482 and TMR-1212. By type, the board carries 66 resistors, 52 capacitors, 19 diodes, 18 ICs, 9 transistors and 5 connectors.
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 Rear V3
Megaboard Rear V3 bill of materials (BOM)
180 components, 72 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C12084 SN65HVD230 | SOIC-8_3.9x4.9mm_P1.27mm | U1, U5 |
| 1 | C388175 TMP101 | SOT-23-6 | U2 |
| 1 | C529581 ESP32-WROOM-32 | ESP32-WROOM-32 | U3 |
| 1 | C69336 STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U4 |
| 1 | C13482 MAX3232 | TSSOP-16_4.4x5mm_P0.65mm | U6 |
| 1 | DNP TMR-1212 | Converter_DCDC_TRACO_TMR-xxxx_THT | U7 |
| 1 | C24112 MPU-6050 | InvenSense_QFN-24_4x4mm_P0.5mm | U8 |
| 1 | C7955 LM393 | SOIC-8_3.9x4.9mm_P1.27mm | U9 |
| 3 | C7950 LM358 | SOIC-8_3.9x4.9mm_P1.27mm | U10, U15, U17 |
| 1 | C7593 NE555DR | SOIC-8_3.9x4.9mm_P1.27mm | U11 |
| 1 | C29981 EL357NCn | SOP-4_3.8x4.1mm_P2.54mm | U12 |
| 1 | DNP DV24V150F12 | D24V150F12 | U13 |
| 2 | AMS1117-3.3 | SOT-223-3_TabPin2 | U14, U16 |
| 1 | TPS5431DDA | TI_SO-PowerPAD-8_ThermalVias | U18 |
| 4 | C20917 AO3400A | SOT-23 | Q1, Q2, Q3, Q4 |
| 5 | C20917 MMBF170 | SOT-23 | Q5, Q6, Q7, Q8, Q9 |
| 1 | C13738 9p | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | C32346 12p5 | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | DNP 5007621001 | CONN_500762-1001_MOL | J1 |
| 1 | C585350 Micro_SD_Card_Det | microSD_HC_Molex_104031-0811 | J2 |
Show 52 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_01X03 Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | CONN_02X03_ODD_EVEN Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | DNP Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J5 |
| 2 | DNP NC | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 2 | JUMPER_2_OPEN Jumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5, JP6 |
| 4 | C318884 SW_MEC_5G | SW_Push_1P1T_XKB_TS-1187A | SW1, SW2, SW3, SW4 |
| 2 | DNP NUP2105L | SOT-23 | D1, D13 |
| 7 | C84256 NCD0805R1 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D4, D14, D15, D16, D17, D19 |
| 1 | C412437 US1M | D_SMA | D3 |
| 1 | DNP BZV55C15 | D_MiniMELF | D5 |
| 6 | C8056 ZMM3V3-M | D_MiniMELF | D6, D7, D9, D10, D11, D12 |
| 1 | C2297 KT-0805G | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D8 |
| 1 | SS34 | D_SMA | D18 |
| 1 | CDRH104RNP-150NC 15uH | IND_CDRH104_SUM | L1 |
| 24 | C28233 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C6, C7, C8, C9 +16 |
| 1 | C1779 4.7u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 8 | C15850 10u | CP_EIA-3216-18_Kemet-A | C18, C19, C36, C37, C39, C40, C46, C47 |
| 2 | C1798 20p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C21, C22 |
| 2 | C1804 22p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C23, C24 |
| 2 | C28260 2.2n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C27, C29 |
| 7 | C28323 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C32, C35, C41, C42, C44, C45, C51 |
| 1 | C1710 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C33 |
| 2 | C15850 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C34, C48 |
| 1 | C15850 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C49 |
| 1 | 10TPB220M 220u | PCAP_TPB_D4_PAN | C50 |
| 1 | C15850 DNP | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C52 |
| 1 | C25804 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 2 | C23162 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R4 |
| 10 | C17414 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R6, R10, R15, R16, R35, R42, R44 +2 |
| 2 | C22787 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R12 |
| 4 | C17477 0R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R11, R20 |
| 2 | C17540 200 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R17 |
| 2 | C17520 200 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R62 |
| 3 | C17520 2k2 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R25, R43 |
| 2 | C17540 4k7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18, R19 |
| 8 | C149504 300k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R22, R23, R24, R27, R28, R29, R30 |
| 2 | C17513 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R26, R32 |
| 1 | C4328 18k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31 |
| 1 | C149504 0.01R | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R33 |
| 1 | C17379 1k2 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R34 |
| 5 | C17414 9k1 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36, R45, R52, R55, R58 |
| 1 | C17560 22k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R37 |
| 1 | C17737 51k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R38 |
| 2 | C17477 82 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R40, R46 |
| 6 | C23255 3k6 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R41, R47, R49, R54, R57, R60 |
| 1 | C17414 1k3 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R48 |
| 4 | C23255 82 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R50, R53, R56, R59 |
| 1 | C23255 47 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R51 |
| 1 | C23255 9k1 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R61 |
| 1 | C17540 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R63 |
| 1 | C17540 3.24k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R64 |
| 1 | C17630 330R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R66 |
Megaboard Rear 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 Rear V3: common questions
What microcontroller does the Megaboard Rear V3 use?
The Megaboard Rear V3 is built around the C529581, from the ESP32 family.
How big is the Megaboard Rear V3 PCB?
The Megaboard Rear V3 measures 155.3 × 110.3 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the Megaboard Rear V3?
180 components, from 72 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 Rear 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 Rear 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 Rear V3 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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