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BIMU V 1

robotique-udes·Exo_Electric·ACE 2027/BIMU/BIMU_V1_0/BIMU_V_1.kicad_pcb

BIMU V 1 PCB layout, top view — open source ESP32 board by robotique-udes
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About the BIMU V 1 PCB

BIMU V 1 is an open source ESP32 PCB design by robotique-udes, published on GitHub under the GPL-2.0 license. It is a 4-layer board measuring 40 × 35 mm, with 45 components from 23 distinct parts.

Its main chip is the ESP32-C3, from the ESP32 family. Other key parts include the AP7361C-33E, SN65HVD232DR and LSM6DSV16BXTR. By type, the board carries 16 capacitors, 13 resistors, 6 diodes, 4 ICs, 3 connectors and 2 switches.

It belongs with the sensors designs in this gallery.

From the project

This repo contains all the information about the PCB and electrical schematics of Biogenius.

Petit module IMU conçu autour d'un ESP32 et du capteur inertiel LSM6DSV16BXTR. Il fournit des mesures d'accélération et de rotation destinées aux calculs de l'exosquelette.

Après étalonnage (offsets, facteurs d'échelle, compensation thermique) et filtrage (filtre complémentaire, filtre de Kalman ou AHRS), on peut viser une précision d'orientation de l'ordre de 0,1° à quelques degrés selon les conditions, la durée d'intégration et la qualité mécanique du montage. Le bruit intrinsèque du capteur est typiquement de l'ordre de quelques µg/√Hz pour l'accéléromètre et quelques mdps/√Hz pour le…

BIMU V 1, from the project README
From the project README

Main components on the BIMU V 1

AP7361C-33EESP32-C3SN65HVD232DRLSM6DSV16BXTR

BIMU V 1 bill of materials (BOM)

45 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AP7361C-33E
U101
1
ESP32-C3
U201
1
SN65HVD232DR
U202
1
LSM6DSV16BXTR
U301
1
ABM8-40.000MHZ-10-D1G-T
Y201
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J202
2
RJ45
J203, J204
2
SW_Push
SW201, SW202
1
POWER LED
D101
2
BAV99
D102, D103
1
USBLC6-2SC6
STMicroelectronics
D201
1
CONNECTED LED
D202
1
ERROR LED
D203
2
4,7µF
C101, C102
2
1NF
1nF
C103, C104
2
22μF
C201, C209
7
0.1μF
C202, C203, C204, C205, C208, C301, C302
2
12PF
12pF
C206, C207
1
47NF
47nF
C210
3
330Ω
R101, R209, R210
Show 3 more
QtyPartRefs
4
5.1KΩ
R201, R202, R207, R208
4
0Ω
R203, R204, R205, R206
2
50Ω
R211, R212

BIMU V 1 design files

The KiCad project lives in the robotique-udes/Exo_Electric repository on GitHub; these links point at the commit this page was built from.

BIMU V 1: common questions

What microcontroller does the BIMU V 1 use?

The BIMU V 1 is built around the ESP32-C3, from the ESP32 family.

How big is the BIMU V 1 PCB?

The BIMU V 1 measures 40 × 35 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the BIMU V 1?

45 components, from 23 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 BIMU V 1 design files?

From the robotique-udes/Exo_Electric 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 BIMU V 1 design in my own project?

Yes, under the terms of its GPL-2.0 license, which robotique-udes chose for the repository.

Can I test firmware for the BIMU V 1 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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