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# ErgoDox EZ
The Ez uses the [Teensy Loader](https://www.pjrc.com/teensy/loader.html).
Linux users need to modify udev rules as described on the [Teensy
Linux page]. Some distributions provide a binary, maybe called
`teensy-loader-cli`.
[Teensy Linux page]: https://www.pjrc.com/teensy/loader_linux.html
To flash the firmware:
- Build the firmware with `make <keyboardname>:<keymapname>`, for example `make ergodox_ez:default`
- This will result in a hex file called `ergodox_ez_keymapname.hex`, e.g.
`ergodox_ez_default.hex`
- Start the teensy loader.
- Load the .hex file into it.
- Press the Reset button by inserting a paperclip gently into the reset hole
in the top right corner.
- Click the button in the Teensy app to download the firmware.
See also [video demonstration](https://www.youtube.com/watch?v=9PyiGUO9_KQ) using Teensy in auto mode.
To flash with ´teensy-loader-cli´:
- Build the firmware with `make keymapname`, for example `make default`
- Run ´<path/to/>teensy_loader_cli -mmcu=atmega32u4 -w ergodox_ez_<keymap>.hex´
- Press the Reset button by inserting a paperclip gently into the reset hole
in the top right corder.
## Settings
You may want to enable QMK_KEYS_PER_SCAN because the Ergodox has a relatively
