HardLabs

Comms Board

stellarcorp·tvsc·electrical/pcb_design/comms_board/comms_board.kicad_pcb

Comms Board layout, top view — open source STM32 board by stellarcorp

About the Comms Board

Comms Board is an open source STM32 PCB design by stellarcorp, published on GitHub under the MIT license. It is a 4-layer board measuring 82.5 × 82.5 mm, with 63 components from 21 distinct parts.

Its main chip is the C192722, from the STM32 family. Other key parts include the TCAN330DR, C2155885, C1518762, RFM69HCW and C5368700. By type, the board carries 33 resistors, 20 capacitors, 6 ICs, 2 connectors, 1 diode and 1 inductor.

From the project

Core software repository for the Tennessee Valley Stellar Corporation

This repository is the principal codebase for the Tennessee Valley Stellar Corporation. We are a community-scale space agency in east Tennessee dedicated to the open development of technologies enabling the public use of space.

There are three main sections to the repository. The most active development at the moment is taking place in the hal and the electronics directories. The hal directory contains the Hardware Abstraction Layer. The electronics directory holds our PCB design work. The rest of the repository (the third section) consists of older code that is in need of…

Main components on the Comms Board

C192722TCAN330DRC2155885C1518762RFM69HCWC5368700

Comms Board bill of materials (BOM)

63 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C192722
STM32L452RCTx
STMicroelectronics
U1
1
TCAN330DR
Texas Instruments
U2
1
C2155885
INA260
Texas Instruments
U3
1
C1518762
TPS63900
Texas Instruments
U4
1
NA
RFM69HCW
U5
1
C5368700
IMU1
Bosch Sensortec
U6
1
504050-1291
Molex_504050-1291
Molex
J2
1
504050-1291
Molex_504050-1291
Molex
J3
1
C72041
Blue LED
Everlight Elec
D1
1
C576403
2.2µH
Murata
L1
10
C1525
100n
Samsung Electro-Mechanics
C1, C2, C3, C7, C8, C9, C13, C14 +2
1
C15525
10u
Samsung Electro-Mechanics
C4
2
C710887
22u
Murata
C5, C17
1
C77041
10u
Murata
C6
6
C52923
1u
Samsung Electro-Mechanics
C10, C11, C12, C15, C16, C18
10
C270572
9k31
UNI-ROYAL(Uniroyal Elec)
R1, R3, R6, R11, R12, R17, R25, R26 +2
16
C25105
33
UNI-ROYAL(Uniroyal Elec)
R2, R4, R5, R7, R8, R9, R18, R19 +8
1
C23029
36k5
UNI-ROYAL(Uniroyal Elec)
R10
2
C11462
3k16
UNI-ROYAL(Uniroyal Elec)
R13, R16
2
C163479
221k
YAGEO
R14, R15
Show 1 more
QtyPartRefs
2
C60310
60
UNI-ROYAL(Uniroyal Elec)
R49, R50

Comms Board design files

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

Comms Board: common questions

What microcontroller does the Comms Board use?

The Comms Board is built around the C192722, from the STM32 family.

How big is the Comms Board?

The Comms Board measures 82.5 × 82.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Comms Board?

63 components, from 21 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 Comms Board design files?

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

Can I use the Comms Board design in my own project?

Yes, under the terms of its MIT license, which stellarcorp chose for the repository.

Can I test firmware for the Comms 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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