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+# 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_<keymap>.hex`
+
+  - 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.