# BB40 ![BB40](https://i.imgur.com/iikCpBuh.png) A completely normal BlackPill-powered 40% DIY kit. The `f401` version is the standard for this kit, using an STM32F401 BlackPill. The `f411` version will not run on an STM32F401 BlackPill; if in doubt, use `f401`. * Keyboard Maintainer: [Kyle McCreery](https://github.com/kylemccreery) * Hardware Supported: BB40 v1.0 * Hardware Availability: [BB40 on MechWild](https://mechwild.com/product/bb40/) Make example for this keyboard (after setting up your build environment): make mechwild/bb40/f401:default make mechwild/bb40/f411:default Flashing example for this keyboard: make mechwild/bb40/f401:default:flash make mechwild/bb40/f411:default:flash 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).