This is a Bluepill-compatible devboard for the STM32F411CEU6 microcontroller. It uses 0805 surface mount parts and a few through hole parts that can be easily obtained as generic components. It is intended to be an alternative should the should the STM32F411CE6 Bluepill not be available. The layout is somewhat optimized to be RFI resistant given it is a two-layer board This material is copyrighted by Daniel Marks (KW4TI) and licensed under the Creative Commons License CC-BY-SA 4.0. Software is copyrighted using the zlib open-source license.