HardLabs

Blackbox

cuspaceflight·lychee·schematics/blackbox/blackbox.kicad_pcb

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

About the Blackbox PCB

Blackbox is an open source STM32 PCB design by cuspaceflight, published on GitHub. It is a 4-layer board measuring 80 × 80 mm, with 44 components from 17 distinct parts.

Its main chip is the STM32F405RGT6, from the STM32 family. Other key parts include the MAX14787E. By type, the board carries 15 test points, 12 capacitors, 7 diodes, 4 connectors, 3 resistors and 2 ICs.

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 Blackbox

STM32F405RGT6MAX14787E

Blackbox bill of materials (BOM)

44 components, 17 distinct parts.

QtyPartRefs
1
STM32F405RGT6
U101
1
MAX14787E
U102
1
26M
Y101
2
Micro_SD_Card
J101, J102
1
SWD
J103
1
F_COMPUTER
J104
15
TestPoint
TP101, TP102, TP103, TP104, TP105, TP106, TP107, TP108 +7
1
RED
D101
6
D_ESD
D102, D103, D104, D105, D106, D107
1
1µ
C101
6
100n
C102, C103, C105, C106, C107, C110
1
4µ7
C104
2
2µ2
C108, C109
2
10p
C111, C112
1
50
R101
1
100
R102
1
120
R103

Blackbox design files

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

Blackbox: common questions

What microcontroller does the Blackbox use?

The Blackbox is built around the STM32F405RGT6, from the STM32 family.

How big is the Blackbox PCB?

The Blackbox measures 80 × 80 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Blackbox?

44 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Blackbox 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 Blackbox 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 Blackbox 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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