HardLabs

Carte2

Honzaaa45·msl-cable-tester·hardware/carte2/carte2.kicad_pcb

Carte2 PCB layout, top view — open source ESP32 board by Honzaaa45

About the Carte2 PCB

Carte2 is an open source ESP32 PCB design by Honzaaa45, published on GitHub under the MIT license. It is a 2-layer board measuring 136.3 × 88.3 mm, with 44 components from 33 distinct parts.

Its main chip is the ESP32-WROOM 30-pin dev board, from the ESP32 family. Other key parts include the MT3608 Boost Converter Module and MCP6002-xP. By type, the board carries 18 resistors, 7 connectors, 7 capacitors, 3 ICs, 3 transistors and 2 diodes.

It belongs with the power & battery designs in this gallery.

From the project

Testeur de câbles industriel 40+40 broches — ESP32 + LVGL + KiCad + Fusion 360. Projet fil rouge BUT2 GEII AII pour MSL Circuits.

Testeur de câbles industriel 40+40 broches, portable, à base d'ESP32 + LVGL.

Le problème : chez MSL Circuits, le contrôle qualité des câbles en fin de fabrication reposait sur un test manuel au multimètre — long, fastidieux, sujet à l'erreur humaine. Les testeurs pros du marché coûtent 3 000 à 15 000 €.

La solution : un testeur portable, batterie 8 h, 40+40 broches, modulaire via adaptateurs (RJ45, USB, SUB-D, Molex, TE), qui détecte en < 1 seconde continuité, courts-circuits, inversions et fils coupés — et affiche une résistance approximative après calibration. Coût matière : ~80 €.

Main components on the Carte2

ESP32-WROOM 30-pin dev boardMT3608 Boost Converter ModuleMCP6002-xP

Carte2 bill of materials (BOM)

44 components, 33 distinct parts.

QtyPartRefs
1
ESP32-WROOM 30-pin dev board
U2
1
MT3608 Boost Converter Module
U3
1
MCP6002-xP
U8
1
2N7000
Q1
1
DMP1045U-GSD
Q2
1
S8050
Q4
1
MODULE_ADS1115
J1
1
Conn_02x10_Odd_Even
J2
1
BACK
J3
1
OK
J4
1
DOWN
J5
1
UP
J6
1
Conn_01x02
J7
1
1025
Keystone
BATTERIE1
1
BUZZER
H3
1
3-5-TFT-MODULE-ILI9488
TFT3
1
Battery charger
TP1
1
SB220
D1
1
1N4148
D2
2
100nF
C1, C4
Show 13 more
QtyPartRefs
1
10uF
C2
1
100nF
C3
1
4.7nF
C5
1
C_Polarized
C6
1
47uF
C7
2
4.7k
R1, R2
1
100R
R3
2
220R
R4, R14
1
22k 1%
R5
4
10k
R6, R7, R10, R11
3
1k
R8, R9, R17
4
100k
R12, R13, R16, R18
1
2.49k 1%
R15

Carte2 design files

The KiCad project lives in the Honzaaa45/msl-cable-tester repository on GitHub; these links point at the commit this page was built from.

Carte2: common questions

What microcontroller does the Carte2 use?

The Carte2 is built around the ESP32-WROOM 30-pin dev board, from the ESP32 family.

How big is the Carte2 PCB?

The Carte2 measures 136.3 × 88.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Carte2?

44 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Carte2 design files?

From the Honzaaa45/msl-cable-tester repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Carte2 design in my own project?

Yes, under the terms of its MIT license, which Honzaaa45 chose for the repository.

Can I test firmware for the Carte2 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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