M3PSU - MCU Board
About the M3PSU - MCU Board
M3PSU - MCU Board is an open source STM32 PCB design by cuspaceflight, published on GitHub. It is a 2-layer board measuring 40 × 40 mm, with 151 components from 65 distinct parts.
Its main chip is the STM32F405RxTx, from the STM32 family. Other key parts include the NCP380, NC7SZ04, CS2100-CP, SL18860DC and MAX_M8Q. By type, the board carries 42 resistors, 38 capacitors, 20 connectors, 14 diodes, 12 transistors and 11 ICs.
From the project
Martlet 3 Avionics
This repository contains all the avionics for Martlet 3, including system design, documentation, schematics, PCBs, and firmware.
Main components on the M3PSU - MCU Board
M3PSU - MCU Board bill of materials (BOM)
151 components, 65 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NCP380 | DFN-6-EP-ONSEMI | IC1 |
| 1 | NC7SZ04 | SOT-23-5 | IC2 |
| 1 | CS2100-CP | MSOP-10 | IC3 |
| 1 | SL18860DC | DFN-10-SL18860DC | IC4 |
| 1 | MAX_M8Q | MAX-M8Q | IC5 |
| 1 | SN74LVC1G0832 | SC-70-6 | IC6 |
| 1 | STM32F405RxTx | LQFP-64 | IC101 |
| 1 | MCP2562 | DFN-8-EP-MICROCHIP | IC102 |
| 1 | Si4461 | QFN-20-EP-SI | IC201 |
| 1 | NCP4620 | SC-70-5 | U1 |
| 1 | MICROSD-RESCUE-main | MICROSD_MOLEX_503398-1892 | U2 |
| 8 | Si5515CDC | ChipFET-1206-8 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 2 | NFET_GDS | PowerPAK-SC-75-6L-Single | Q9, Q11 |
| 2 | PFET_GDS | SON2x2 | Q10, Q12 |
| 1 | TCXO | TG-5006CG | Y1 |
| 1 | MICROUSB | MICROUSB_MOLEX_47589-0001 | J1 |
| 2 | WEST BOT | SFML-110-02-L-D-LC | J2, J102 |
| 2 | WEST TOP | TFML-110-02-L-D | J3, J101 |
| 2 | EAST BOT | SFML-110-02-L-D-LC | J4, J104 |
| 2 | EAST TOP | TFML-110-02-L-D | J5, J103 |
Show 45 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PYRO8 | B02B-PASK | J6 |
| 1 | 5v_CAM | B02B-PASK | J7 |
| 1 | ARM | B02B-PASK | J8 |
| 1 | PWR | B02B-PASK | J9 |
| 1 | CHARGE | B02B-PASK | J10 |
| 1 | CHG | B02B-PASK | J11 |
| 1 | CAM | B02B-PASK | J12 |
| 1 | USB | B04B-PASK | J13 |
| 1 | SWD_TC | TC2030-NL | P1 |
| 2 | COAX | U.FL-R-SMT-1 | P101, P201 |
| 1 | SOUNDER | KSSG13J12-N | LS1 |
| 4 | TESTPAD | TESTPAD | TP1, TP2, TP3, TP4 |
| 11 | ESD_DIODE | 0402 | D1, D2, D4, D5, D6, D7, D8, D9 +3 |
| 2 | GRN | 0603-LED | D3, D102 |
| 1 | RED | 0603-LED | D101 |
| 3 | 91nH | 0402-L | L1, L2, L3 |
| 1 | 120nH | 0603-L | L201 |
| 1 | 20nH | 0402 | L202 |
| 1 | 24nH | 0402 | L203 |
| 1 | 8.2nH | 0603-L | L204 |
| 1 | 6.8nH | 0402 | L205 |
| 15 | 100n | 0402 | C1, C4, C9, C10, C15, C16, C17, C104 +7 |
| 5 | 1u | 0402 | C2, C3, C7, C8, C106 |
| 2 | 1n | 0402 | C5, C11 |
| 1 | 1µ | 0402 | C6 |
| 1 | 220p | 0402 | C12 |
| 1 | 2.2u | 0402 | C13 |
| 1 | 10n | 0402 | C14 |
| 2 | 10µ | 1210 | C18, C19 |
| 2 | 22p | 0402 | C20, C204 |
| 1 | 4u7 | 0402 | C103 |
| 2 | 2u2 | 0402 | C110, C111 |
| 1 | 100p | 0402 | C201 |
| 1 | 3p | 0402 | C203 |
| 1 | 1p | 0402 | C205 |
| 2 | 5.6p | 0402 | C206, C207 |
| 1 | 10 | 0603 | R1 |
| 1 | 110k | 0402 | R2 |
| 7 | 1M | 0402 | R3, R35, R36, R37, R38, R39, R40 |
| 18 | 10k | 0402 | R4, R5, R11, R12, R13, R14, R15, R16 +10 |
| 4 | 47K | 0603 | R6, R7, R8, R9 |
| 3 | 3k3 | 0402 | R10, R19, R20 |
| 4 | 33k | 0402 | R29, R30, R32, R33 |
| 2 | 10m | 0603 | R31, R34 |
| 2 | 100 | 0402 | R102, R103 |
M3PSU - MCU Board design files
The KiCad project lives in the cuspaceflight/m3-avionics repository on GitHub; these links point at the commit this page was built from.
M3PSU - MCU Board: common questions
What microcontroller does the M3PSU - MCU Board use?
The M3PSU - MCU Board is built around the STM32F405RxTx, from the STM32 family.
How big is the M3PSU - MCU Board?
The M3PSU - MCU Board measures 40 × 40 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the M3PSU - MCU Board?
151 components, from 65 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 M3PSU - MCU Board design files?
From the cuspaceflight/m3-avionics repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the M3PSU - MCU Board design in my own project?
The repository has no license, so all rights stay with cuspaceflight. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the M3PSU - MCU Board 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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