-60%
Badge HackGDL
Official Hack GDL 2025 badge: BLE, Wi-Fi, an OLED screen, and a Digital Tamagotchi, ready to hack out of the box.
Original price was: $50.00.$20.00Current price is: $20.00.
In stock
- Minino platform (ESP-IDF, modular BLE/Wi-Fi app system) -- use the official Minino firmware development guide, targeting ESP32-S3.
In the box
Badge HackGDL 2025 board only
Not included
A USB-C cable and AAA batteries are not included — the badge ships as the board only.
You also need
3x AAA batteries for the battery holder, or a USB-C cable to power it instead — neither ships in the box.
- Official badge of Hack GDL 2025.
- Designed and built in Aguascalientes, Mexico
- Hardware CERN-OHL v1.2 · firmware GPL-3.0
Start in 10 minutes
- Power on your badge via USB-C, or insert 3x AAA batteries — explore the pre-installed BLE/Wi-Fi apps and the Digital Tamagotchi from the OLED menu.
- To update the firmware, put the badge into bootloader mode: hold BOOT, press and release RST, then release BOOT.
- Flash the latest firmware from the releases page using the browser-based ESP Tool or the esptool.py CLI.
- For custom firmware development, follow the official Minino firmware development guide — remember to target ESP32-S3, not Minino’s usual ESP32-C6.
| MCU | ESP32-S3 |
|---|---|
| Connectivity | Bluetooth Low Energy (BLE), Wi-Fi |
| Connectors | USB-C, Shitty Addon Connector (SAO) |
| Power | USB-C, 3x AAA battery holder (batteries not included) |
| Display | Integrated OLED screen |
| Buttons | 4 physical buttons |
| LEDs | 3x NeoPixel RGB LED |
| Buzzer | 1x buzzer |
| Enclosure | Case included |
| Hardware license | CERN-OHL v1.2 |
| Firmware license | GNU AGPL v3.0 |
Does the badge work out of the box?
Yes — it comes with functional BLE and Wi-Fi-based apps pre-installed.
Can I develop my own app for the badge?
Yes — use Minino’s modular system and examples as a starting point, following the official Minino firmware development guide. Minino usually targets ESP32-C6, but this badge uses an ESP32-S3, so set the correct chip target.
Where can I get help?
Check the Minino wiki (github.com/ElectronicCats/Minino/wiki) or open an issue in this badge’s own GitHub repo.
