HardLabs

Badge hackgdl-2025

ElectronicCats·badge-hackgdl-2025·hardware/badge-hackgdl-2025.kicad_pcb

Badge hackgdl-2025 PCB layout, top view — open source ESP32 board by ElectronicCats

About the Badge hackgdl-2025 PCB

Badge hackgdl-2025 is an open source ESP32 PCB design by ElectronicCats, published on GitHub. It is a 2-layer board measuring 73.4 × 79.5 mm, with 54 components from 29 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N4, from the ESP32 family. Other key parts include the XC6220B331MR-G. By type, the board carries 21 capacitors, 11 resistors, 7 switches, 5 diodes, 3 connectors and 2 ICs.

It belongs with the iot & wireless, wearables and displays & leds designs in this gallery.

From the project

Badge HackGDL v2.0 2025

Welcome to the official repository of the Hack GDL 2025 event badge, developed by Electronic Cats. This portable device is designed to be interactive, educational, and hackable. It is based on the Minino platform, which uses ESP-IDF as the development environment and offers a modular system for creating BLE and Wi-Fi applications.

To be able to flash your board, you will need to understand how to put it into bootloader mode. You just need to follow the sequence below:

Badge hackgdl-2025, from the project README
From the project README

Main components on the Badge hackgdl-2025

XC6220B331MR-GESP32-S3-WROOM-1-N4

Badge hackgdl-2025 bill of materials (BOM)

54 components, 29 distinct parts.

QtyPartRefs
1
XC6220B331MR-G
U1
1
ESP32-S3-WROOM-1-N4
U2
1
DMG3415U-7
Q1
1
MMBT2222A
Q2
1
ADDON
J1
1
Battery
J2
1
USB_C_Plug_USB2.0
P1
1
Buzzer
BZ1
1
1A
F1
1
ON
SW1
1
RESET
SW2
1
BOOT
SW3
1
RIGHT
SW4
1
BACK
SW5
1
LEFT
SW6
1
MIDDLE
SW7
1
OLED-128O064D
DS1
2
MBR120
D1, D5
3
WS2812B
D2, D3, D4
7
10uF
C1, C2, C4, C5, C13, C14, C16
Show 9 more
QtyPartRefs
3
1uF
C3, C11, C12
10
100nF
C6, C7, C8, C9, C10, C15, C17, C18 +2
1
4.7uF
C21
2
5k1
R1, R2
1
100K
R3
5
10k
R4, R8, R9, R10, R11
1
470
R5
1
1K
R6
1
390k
R7

Badge hackgdl-2025 design files

The KiCad project lives in the ElectronicCats/badge-hackgdl-2025 repository on GitHub; these links point at the commit this page was built from.

Badge hackgdl-2025: common questions

What microcontroller does the Badge hackgdl-2025 use?

The Badge hackgdl-2025 is built around the ESP32-S3-WROOM-1-N4, from the ESP32 family.

How big is the Badge hackgdl-2025 PCB?

The Badge hackgdl-2025 measures 73.4 × 79.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Badge hackgdl-2025?

54 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Badge hackgdl-2025 design files?

From the ElectronicCats/badge-hackgdl-2025 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Badge hackgdl-2025 design in my own project?

The repository has no license, so all rights stay with ElectronicCats. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Badge hackgdl-2025 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.

Similar boards