HardLabs

EStop

robotique-udes·Exo_Electric·ACE 2026/E-Stop/KiCad/eStop.kicad_pcb

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

EStop is an open source ESP32 PCB design by robotique-udes, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 141 × 73.5 mm, with 32 components from 28 distinct parts.

Its main chip is the ESP32, from the ESP32 family. Other key parts include the LMR51610XDBVR and INA240A2PW. By type, the board carries 6 connectors, 6 fuses, 4 capacitors, 4 resistors, 2 ICs and 1 relay.

From the project

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

- Un dossier est créé pour chaque année de compétition - Contient un README.md décrivant le fonctionnement global du système électrique et présentant le schéma-bloc - Contient le schéma-bloc en image et dans son format original décrivant l'interaction entre les sous-systèmes électriques - Un dossier est créé par PCB - Contient un README.md qui explique le fonctionnement du PCB, contient les calculs et hypothèse fait pour le pcb et présente le schéma-bloc. Le README.md doit dire où se trouve le contour du pcb s'il a été fait sur ONSHAPE - Contient le schéma-bloc en image et dans son format…

Main components on the EStop

LMR51610XDBVRINA240A2PW

EStop bill of materials (BOM)

32 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LMR51610XDBVR
U1
1
INA240A2PW
U3
1
MOTOR1
Motor1
J2
1
MOTOR2
Motor2
J3
1
MOTOR3
Motor3
J4
1
MOTOR4
Motor4
J5
1
Battery connections
J6
1
Relay contact
J7
1
0.1uF
Cboot1
2
22uF
Cout1, Cout2
1
ESP32
ESP-32
1
Fuse 1A
F1
1
Fuse 40A
F2
4
Fuse 15A
F3, F4, F5, F6
1
Restart button relay
K2
1
68uH
Lout1
1
7.15k
Rfbb1
1
100k
Rfbt1
1
D6R90_F1_LFS
S1
1
Shottky
D1
Show 8 more
QtyPartRefs
1
0.1UF
0.1uF
C1
1
Cbypass
C2
1
0.1UF
0.1uF
C3
1
4.7UF
4.7uF
C4
1
1m
R1
1
191K
191k
R2
1
10K
10k
R3
1
100
R4

EStop 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.

EStop: common questions

What microcontroller does the EStop use?

The EStop is built around the ESP32, from the ESP32 family.

How big is the EStop PCB?

The EStop measures 141 × 73.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the EStop?

32 components, from 28 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 EStop 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 EStop 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 EStop 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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