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VoxLink - BNO086 Sensor Module

MichalVarsanyi·VoxLink·Hardware/Sensor_Module/Sensor_Module.kicad_pcb

VoxLink - BNO086 Sensor Module layout, top view — open source board by MichalVarsanyi
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About the VoxLink - BNO086 Sensor Module

VoxLink - BNO086 Sensor Module is an open source PCB design by MichalVarsanyi, published on GitHub under the MIT license. It is a 4-layer board measuring 13 × 13 mm, with 32 components from 12 distinct parts.

Other key parts include the BNO086 and TPS7A20L_3V3. By type, the board carries 13 diodes, 9 resistors, 7 capacitors, 2 ICs and 1 crystal.

It belongs with the sensors designs in this gallery.

From the project

VoxLink is a high-speed solution that allows interfacing of up to 100 sensors using a single high-speed host device. The communication protocol is agnostic to the sensor board, freeing the user from handling low-level communication. This project is part of my Bachelor's thesis at the Czech Technical University in Prague.

- During programming, exceeding internal clocking speeds of 100MHz on the iCE40UL1K-CM36AI FPGA proved to be virtually impossible. In the future, instantiating the hard IP I2C blocks in the FPGA silicon may increase the speed. Realistically, however, switching to a higher speed grade of FPGAs will probably be the best option.

It may seem that 50-100 MHz is unreasonably fast; however, just 40 sensors at 9 kHz get very close to this ballpark. It is difficult to determine what may increase the bandwidth in the future, so it's better to have an excess than to have too little bandwidth.…

VoxLink - BNO086 Sensor Module, from the project README
From the project README

Main components on the VoxLink - BNO086 Sensor Module

BNO086TPS7A20L_3V3

VoxLink - BNO086 Sensor Module bill of materials (BOM)

32 components, 12 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BNO086
CEVA
U1
1
TPS7A20L_3V3
TI
U2
1
C5154201
32.768 kHz
Epson
Y1
1
LED
Broadcom
D1
12
C2939949
TVS
Infineon
D2, D3, D4, D5, D6, D7, D8, D9 +4
3
100N
100n
Murata
C1, C2, C5
2
4.7U
4.7u
Murata
C3, C4
2
15PF
15pF
Murata
C6, C7
4
4K7
4k7
Vishay
R1, R2, R5, R6
3
10K
10k
Vishay
R3, R4, R8
1
510R
Vishay
R7
1
22R
Vishay
R9

VoxLink - BNO086 Sensor Module design files

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

VoxLink - BNO086 Sensor Module: common questions

How big is the VoxLink - BNO086 Sensor Module?

The VoxLink - BNO086 Sensor Module measures 13 × 13 mm, has 4 copper layers and is 1.2 mm thick.

How many components are on the VoxLink - BNO086 Sensor Module?

32 components, from 12 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 VoxLink - BNO086 Sensor Module design files?

From the MichalVarsanyi/VoxLink 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 VoxLink - BNO086 Sensor Module design in my own project?

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

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