# τ.4  A 40% ortholinear keyboard, developed by Oliver Gaskell. More info on [gaskell.tech](https://gaskell.tech/tau/four.html) * Keyboard Maintainer: [Oliver Gaskell](https://github.com/ogaskell) * Hardware Supported: Tau4 PCB rev1.0, Tau4 PCB rev1.1 * Hardware Availability: Group Buy - Opens 05 Feb 2021 [More Details](https://gaskell.tech/tau/four.html) Make example for this keyboard (after setting up your build environment): make tau4:default 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).