HardLabs

TundraIOExpansion

ras-marques·ImmersiveGloves·CustomPCBs/InDevelopment/tundraIOExpansion/tundraIOExpansion.kicad_pcb

TundraIOExpansion PCB layout, top view — open source RP2040/RP2350 board by ras-marques
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About the TundraIOExpansion PCB

TundraIOExpansion is an open source RP2040/RP2350 PCB design by ras-marques, published on GitHub under the MIT license. It is a 4-layer board measuring 46 × 36.5 mm, with 89 components from 24 distinct parts.

Its main chip is the BMI270, from the RP2040/RP2350 family. Other key parts include the QMC5883L, MOUDLE-SEEEDUINO-XIAO-ESP32C3, HE6206-18NR, W25Q32JVSS and ICM-20948. By type, the board carries 34 resistors, 29 capacitors, 7 ICs, 7 transformers, 2 crystals and 1 connector.

It belongs with the sensors designs in this gallery.

From the project

I want to share how I am making vr gloves using 2 Tundra Trackers, 2 interface boards and 12 inertial sensors.

I want to share how I am making vr gloves using 2 Tundra Trackers, 2 interface boards and 12 inertial sensors.

https://github.com/ras-marques/ImmersiveGloves/assets/6479742/4af1af61-4261-44ce-aa3d-e45de0df7709

Check the full presentation on youtube https://www.youtube.com/watch?v=5OSYiYDkOE8

Hand tracking works with curl and splay on all fingers with 1 IMU on each finger. There is a joystick that is enabled by touching the thumb to the index finger and B, A and System buttons are available by touching the thumb to the middle, ring and pinky fingers respectively.

Main components on the TundraIOExpansion

BMI270QMC5883LMOUDLE-SEEEDUINO-XIAO-ESP32C3HE6206-18NRW25Q32JVSSICM-20948

TundraIOExpansion bill of materials (BOM)

89 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BMI270
RP2040
U1
1
QMC5883L
RP2040
U2
1
MOUDLE-SEEEDUINO-XIAO-ESP32C3
U3
1
HE6206-18NR
U4
2
W25Q32JVSS
U5, U6
1
ICM-20948
U7
2
12.000MHz
Y1, Y2
1
Conn_01x25
J1
8
Conn_01x04
FINGER1, FINGER2, FINGER3, FINGER4, FINGER5L1, FINGER5R1, USB1, USB2
1
Conn_01x08
FingerAux1
7
BSS138BKS_115
T1, T2, T3, T4, T5, T6, T7
1
4.7U
2.2u
C1
1
220N
100n
C2
3
100N
100n
C3, C4, C5
10
100n
C6, C8, C9, C18, C20, C22, C24, C25 +2
5
2.2u
C7, C10, C17, C23, C28
4
33p
C11, C12, C19, C21
2
1u
C13, C14
3
100n
C15, C16, C29
1
2K2
200
R1
Show 4 more
QtyPartRefs
1
2K2
1k
R2
28
10k
R3, R4, R5, R6, R11, R12, R13, R14 +20
3
1k
R7, R9, R10
1
200
R8

TundraIOExpansion design files

The KiCad project lives in the ras-marques/ImmersiveGloves repository on GitHub; these links point at the commit this page was built from.

TundraIOExpansion: common questions

What microcontroller does the TundraIOExpansion use?

The TundraIOExpansion is built around the BMI270, from the RP2040/RP2350 family.

How big is the TundraIOExpansion PCB?

The TundraIOExpansion measures 46 × 36.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the TundraIOExpansion?

89 components, from 24 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 TundraIOExpansion design files?

From the ras-marques/ImmersiveGloves 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 TundraIOExpansion design in my own project?

Yes, under the terms of its MIT license, which ras-marques chose for the repository.

Can I test firmware for the TundraIOExpansion without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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