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Manta Ortho

Product relationship​

Manta Ortho is part of the Manta keyboard family, a legacy AVR PCB (see Manta Family Overview)), using an ortholinear layout.

Quick identification​

  • PCB silkscreen: Manta Ortho.
  • MCU: ATmega32U4.
  • Wireless backend: Bluefruit or DuoChord (pick one).
  • Layout: 40% Ortho.
  • Flashing: .hex + qmk-dfu.

Do-not-mix warning​

  • Manta Ortho (legacy BLE firmware (Bluefruit) / DuoChord) and Manta40 rev2 (Trichord) firmware cannot be mixed.
  • Manta Ortho and Manta40 rev2 Ortho (Trichord) firmware cannot be mixed.
  • Bluefruit and DuoChord firmware are not interchangeable; migrating from Bluefruit to DuoChord requires a fixed sequence, see first migration.

Spec summary​

ItemValue
MCUATmega32U4
ConnectivityUSB + BLE (Bluefruit or DuoChord)
Bootloaderqmk-dfu
Firmware format.hex
VIA / VialSupported
Layout40% Ortho
Wireless backendBluefruit / DuoChord

Firmware, VIA JSON definitions, and SHA-256 checksums are available in the Download Center (see Firmware Downloads). DuoChord targets also need a matching nRF OTA package, shipped as part of the first-migration kit.

First use / migration prerequisites​

Common features​

Default keymap​

The default keymap provides a 40% ortholinear layout. Wireless function keys (BLE1–BLE5, PAIR, CLR, etc.) follow the firmware you flash.

Model-specific features​

  • 40% ortholinear layout.
  • Bluefruit / DuoChord dual wireless backends.

Troubleshooting​

Version compatibility​

  • Hardware revision: rev_ortho (only).
  • Config tools: VIA / Vial.
  • Firmware: QMK / Vial builds for the Manta Ortho target; DuoChord targets also need the matching nRF OTA package.