# Dactyl See https://github.com/adereth/dactyl-keyboard The Dactyl 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 handwired/dactyl:<keymapname>`, for example `make handwired/dactyl:default` - This will result in a hex file called `handwired_dactyl_<keymapname>.hex`, e.g. `handwired_dactyl_default.hex` - Start the teensy loader. - Load the .hex file into it. - Put the Teensy in firmware-loading mode: * If your current layout has a RESET key, press it. * If you lack a RESET key, press the reset button on the Teensy board itself. - Click the button in the Teensy app to download the firmware. To flash with ´teensy-loader-cli´: - Build the firmware as above - Run `<path/to/>teensy_loader_cli -mmcu=atmega32u4 -w handwired_dactyl_<keymapname>.hex` - If you like, you can do both at once: `make handwired/dactyl:<keymapname>:teensy` - Put the Teensy in firmware-loading mode: * If your current layout has a RESET key, press it. * If you lack a RESET key, press the reset button on the Teensy board itself.