Make firmware .hex for this keyboard (after setting up your build environment):
make keycapsss/o4l_5x12:default
Example of flashing this keyboard (or use [QMK Toolbox](https://github.com/qmk/qmk_toolbox)):
make keycapsss/o4l_5x12:default:avrdude
See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).