HardLabs

Flight computer

cuspaceflight·lychee·schematics/flight-computer/flight-computer.kicad_pcb

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

About the Flight computer PCB

Flight computer is an open source STM32 PCB design by cuspaceflight, published on GitHub. It is a 4-layer board measuring 80 × 80 mm, with 114 components from 57 distinct parts.

Its main chip is the STM32F405RGT6, from the STM32 family. Other key parts include the MAX14787E, NXB0108PW-Q100J, ICM-20789, MS5611-01BA and PCA9306. By type, the board carries 42 capacitors, 20 resistors, 15 diodes, 11 ICs, 8 connectors and 7 inductors.

It belongs with the rf & radio designs in this gallery.

From the project

PCBs for the 'Lychee' Jan 2022 HAB Launch

Lychee is a HAB (high-altitude balloon) which serves two main purposes: - An induction project for new members looking to get hands-on building and launching a HAB. - A test bed for prototype Martlet IV electronics.

With rough designs already complete for Martlet IV's eventual launch, we decided to port the flight computer into a less modular form factor and consolidate modules, to create an extensible dual-board architecture that allows us to test both fundamental system hardware and prototype future modules through an expansion slot.

Main components on the Flight computer

STM32F405RGT6MAX14787ENXB0108PW-Q100JICM-20789MS5611-01BAPCA9306Si4463MAX-M8MAX604BQ29200

Flight computer bill of materials (BOM)

114 components, 57 distinct parts.

QtyPartRefs
1
STM32F405RGT6
U101
1
MAX14787E
U102
1
NXB0108PW-Q100J
U201
1
ICM-20789
U202
1
MS5611-01BA
U203
1
PCA9306
U204
1
Si4463
U301
1
MAX-M8
U302
2
MAX604
U401, U403
1
BQ29200
U402
1
BSS138
Q101
1
26M
Y101
1
LFTCXO068373
Y301
1
BATT
J101
1
GPS
J102
1
TELEM
J103
1
Expansion Slot
J104
1
USB C
J105
1
SWD
J106
1
BLACKBOX
J107
Show 37 more
QtyPartRefs
1
BMI-S-201
J301
8
TestPoint
1.8V, 3.3V, MISO 1, MISO 2, MOSI 1, MOSI 2, SCLK 1, SCLK 2
13
D_ESD
D101, D102, D103, D104, D107, D108, D109, D110 +5
1
RED
D105
1
YLW
D106
1
120n
L301
1
3n3
L302
2
12n
L303, L305
2
24n
L304, L307
1
18n
L306
1
1µ
C101
18
100n
C102, C103, C105, C106, C107, C110, C201, C202 +10
1
4µ7
C104
2
2µ2
C108, C109
2
10p
C111, C112
2
2u2
C204, C310
1
10n
C206
1
2n
C302
1
5p1
C303
1
6n8
C304
2
3p3
C305, C306
1
1p2
C307
1
3p
C308
1
1u
C309
1
220p
C312
1
100p
C313
4
10u
C401, C402, C407, C408
1
330n
C406
5
100
R101, R105, R401, R403, R405
2
50
R102, R103
1
110k
R104
2
10k
R106, R107
1
120
R108
2
200k
R201, R407
4
4k7
R202, R203, R204, R205
2
160
R402, R404
1
100k
R406

Flight computer design files

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

Flight computer: common questions

What microcontroller does the Flight computer use?

The Flight computer is built around the STM32F405RGT6, from the STM32 family.

How big is the Flight computer PCB?

The Flight computer measures 80 × 80 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Flight computer?

114 components, from 57 distinct parts. The full bill of materials is listed on this page.

Where can I download the Flight computer design files?

From the cuspaceflight/lychee repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Flight computer 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 Flight computer 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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