Presença Carteirinha UFMG VerLab · GEAR · device tools

Device tools

Author classroom config in the browser, then flash firmware over USB. Nothing is uploaded to this site — work stays on your machine until you put files on the device SD card.

1 · Config

Config builder

Teachers, students, classes, and photos → download config.tar. Copy it to the SD root (or upload via the device Wi‑Fi file manager), then import on the device.

Open config builder →
2 · Firmware

USB installer

Chrome / Edge + Web Serial. Pick a GitHub Release and flash bootloader, partitions, and app to the ESP32-P4.

Open firmware installer →

Apply config.tar to the SD card

  1. In Config, download config.tar (built entirely in your browser).
  2. Put the file at the root of the device SD card as /config.tar — either copy with a card reader, or join the device Wi‑Fi soft‑AP and use SD File Manager (Admin → Wi‑Fi) to upload it.
  3. On the device: confirm import on idle (new setup) or Admin → Import config. The firmware validates and overlays teachers / students / classes; attendance data is kept.

Repository · Releases · Sources: tools/config-builder/, docs/flasher/