HardLabs

M4psu

cuspaceflight·m4-avionics·m4psu/m4psu.kicad_pcb

M4psu PCB layout, top view — open source STM32 board by cuspaceflight

About the M4psu PCB

M4psu is an open source STM32 PCB design by cuspaceflight, published on GitHub. It is a 2-layer board measuring 269 × 155 mm, with 246 components from 71 distinct parts.

Its main chip is the STM32F405RxTx, from the STM32 family. Other key parts include the MCP2562, TPS62152, LTC4151, TLV76012 and TPS62132. By type, the board carries 108 resistors, 64 capacitors, 34 transistors, 11 ICs, 11 connectors and 5 crystals.

From the project

Martlet 4 Avionics

This repository contains all the avionics for Martlet 4, including system design, documentation, schematics, PCBs, and firmware.

Main components on the M4psu

MCP2562STM32F405RxTxTPS62152LTC4151TLV76012TPS62132LTC2975TPS62133BQ40Z60

M4psu bill of materials (BOM)

246 components, 71 distinct parts.

QtyPartRefs
1
MCP2562
IC1
1
STM32F405RxTx
IC2
1
TPS62152
IC3
1
LTC4151
IC4
1
TLV76012
IC5
1
TPS62132
IC6
3
LTC2975
IC7, IC8, IC10
1
TPS62133
IC9
1
BQ40Z60
IC11
4
PFET
Q1, Q2, Q3, Q5
3
NFET
Q4, Q6, Q33
11
NFET
Q7, Q9, Q11, Q13, Q15, Q17, Q19, Q21 +3
11
PFET
Q8, Q10, Q12, Q14, Q16, Q18, Q20, Q22 +3
3
NFET2
Q29, Q30, Q32
1
SiZ340DT
Q31
1
NFET
Q34
4
HOLE
X1, X2, X3, X4
1
26M
Y1
1
WEST TOP
J1
1
EAST TOP
J2
Show 51 more
QtyPartRefs
1
SUPPLY
J3
1
VALVES
J4
1
CHG
J5
1
BAT+
J6
1
TAP3
J7
1
TAP2
J8
1
TAP1
J9
1
BAT-
J10
1
SWD_TC
P1
4
TESTPAD
TP1, TP2, TP3, TP4
1
RED
D1
1
YLW
D2
1
GRN
D3
2
SCHOTTKY
D4, D5
1
3µ3
L1
2
2u2
L2, L3
1
2µ2
L4
2
10p
C1, C2
27
100n
C3, C5, C6, C8, C9, C10, C11, C22 +19
1
4µ7
C4
3
1µ
C7, C43, C48
2
2µ2
C12, C13
2
22µ
C14, C17
6
100n
C15, C18, C19, C20, C23, C38
3
3n3
C16, C26, C39
2
10u
C21, C35
3
10n
C24, C31, C36
4
22u
C27, C28, C40, C41
2
2µ2
C44, C64
1
1µ5
C47
1
100p
C53
4
10µ
C59, C60, C62, C63
1
22p
C61
3
100k
R1, R2, R106
4
100
R3, R5, R6, R7
3
4k7
R4, R8, R9
2
2m
R10, R98
2
47k
R11, R15
24
10k
R12, R16, R19, R20, R21, R22, R23, R25 +16
26
33k
R13, R14, R17, R18, R27, R29, R39, R41 +18
3
5k49
R24, R36, R68
11
1M
R28, R40, R44, R48, R52, R56, R60, R72 +3
12
10m
R30, R42, R46, R50, R54, R58, R62, R74 +4
6
100R
R87, R88, R92, R93, R94, R95
3
10M
R89, R100, R105
3
5K1
R90, R96, R104
2
10R
R91, R97
1
330K
R101
1
56K2
R102
1
2R
R107
1
120
R108

M4psu design files

The KiCad project lives in the cuspaceflight/m4-avionics repository on GitHub; these links point at the commit this page was built from.

M4psu: common questions

What microcontroller does the M4psu use?

The M4psu is built around the STM32F405RxTx, from the STM32 family.

How big is the M4psu PCB?

The M4psu measures 269 × 155 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the M4psu?

246 components, from 71 distinct parts. The full bill of materials is listed on this page.

Where can I download the M4psu design files?

From the cuspaceflight/m4-avionics repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the M4psu 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 M4psu 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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