HardLabs

Main

cuspaceflight·m3-avionics·m3dl/main/main.kicad_pcb

Main PCB layout, top view — open source STM32 board by cuspaceflight
Simulate this board

About the Main PCB

Main is an open source STM32 PCB design by cuspaceflight, published on GitHub. It is a 2-layer board measuring 40 × 40 mm, with 39 components from 20 distinct parts.

Its main chip is the STM32F405RxTx, from the STM32 family. Other key parts include the MCP2562 and MICROSD. By type, the board carries 15 capacitors, 10 resistors, 7 connectors, 3 ICs, 3 diodes and 1 crystal.

It belongs with the sensors designs in this gallery.

From the project

Martlet 3 Avionics

For overall BOM see: http://bit.ly/1YytYK4

x1 Temperature Sensor Board: - LTC2983 10 Channel fancy box. - 9 Thermocouples w/ Cold junction compensation. - SPI over data logger stack interconnect (x4 Pins) plus interrupt. - On board 18-pin connector (2 Pins per Thermocouple) connects to a wiring harness which passes through cutouts in below boards and breaks out to 9x 2-Pin in line connectors for thermocouples.

Main components on the Main

STM32F405RxTxMCP2562MICROSD

Main bill of materials (BOM)

39 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F405RxTx
IC1
1
MCP2562
IC2
1
MICROSD
U1
1
26MHz
Y1
1
WEST TOP
J1
1
EAST TOP
J2
1
WEST BOT
J3
1
EAST BOT
J4
1
USB
J6
1
SOUTH BOT
J7
1
SWD_TC
P1
3
LED
D1, D2, D3
9
100n
C1, C6, C7, C8, C9, C12, C13, C14 +1
2
10p
C2, C3
2
2u2
C4, C5
1
4u7
C10
1
1u
C15
5
47K
R1, R4, R5, R6, R7
1
100R
R2
4
1k
R3, R8, R9, R10

Main 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.

Main: common questions

What microcontroller does the Main use?

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

How big is the Main PCB?

The Main measures 40 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Main?

39 components, from 20 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 Main 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 Main 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 Main 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.

More boards in m3-avionics

Similar boards