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Open kinematic array

deanarvan·open-kinematic-array·PCB/extracted/BNO055 esp32 mini/Esp32C3/Esp32C3.kicad_pcb

Open kinematic array PCB layout, top view — open source ESP32 board by deanarvan
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About the Open kinematic array PCB

Open kinematic array is an open source ESP32 PCB design by deanarvan, published on GitHub under the MIT license. It is a 4-layer board measuring 22 × 28 mm, with 33 components from 21 distinct parts.

Its main chip is the C2838502, from the ESP32 family. Other key parts include the C347222, C93216 and C16581. By type, the board carries 12 resistors, 9 capacitors, 4 ICs, 2 connectors, 2 diodes and 1 crystal.

It belongs with the iot & wireless, sensors and power & battery designs in this gallery.

From the project

Open-source 3-IMU kinematic data logger — wireless BLE pods for multi-segment trunk motion capture

An open-source hardware and software platform for capturing multi-segment trunk orientation data using three wireless 9-DOF IMU pods over Bluetooth Low Energy.

Three small wireless pods, each containing an ESP32-C3 microcontroller and a BNO055 9-axis IMU, stream orientation data at 50 Hz over BLE to a browser-based web application. The app computes inter-segment angles in real time and logs session data for export.

Main components on the Open kinematic array

C2838502C347222C93216C16581

Open kinematic array bill of materials (BOM)

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

QtyPartRefs
1
C2838502
ESP32-C3-MINI-1-N4
U1
1
C347222
AMS1117-3.3
U3
1
C93216
BNO055
U4
1
C16581
TP4056-42-ESOP8
U5
1
C32346
Q13FC13500004
Y1
1
C165948
TYPE-C-31-M-12
J1
1
C160402
SM02B-SRSS-TB_LF__SN_
J2
2
TestPoint
BOOT1, GND1
1
C431540
MSK12C02
S1
1
C965804
LED
D1
1
C19171390
LED
D2
1
C106254
1uf
C1
2
C277482
22pF
C2, C9
1
C596327
10uF
C3
4
C60474
100nF
C4, C5, C6, C7
1
C109456
4.7uF
C11
2
C2906865
2.2K
R1, R2
1
C60488
2K
R3
2
C106235
1K
R4, R5
5
C60490
10K
R6, R7, R10, R11, R12
Show 1 more
QtyPartRefs
2
C105872
5.1K
R8, R9

Open kinematic array design files

The KiCad project lives in the deanarvan/open-kinematic-array repository on GitHub; these links point at the commit this page was built from.

Open kinematic array: common questions

What microcontroller does the Open kinematic array use?

The Open kinematic array is built around the C2838502, from the ESP32 family.

How big is the Open kinematic array PCB?

The Open kinematic array measures 22 × 28 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Open kinematic array?

33 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 Open kinematic array design files?

From the deanarvan/open-kinematic-array 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 Open kinematic array design in my own project?

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

Can I test firmware for the Open kinematic array without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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