Workshop content for the KNIME Pros Learnathon: Come to our new Learnathon for Advanced Users of KNIME! Today's topic is... components! Are you ready to learn how to build a component, give it its own configuration window and/or its own composite view? In this session you will learn how to build and share reliable and user friendly components that act just like standard KNIME nodes. The learnathon will begin with a detailed introduction to components and related KNIME features, then we will split into three groups. For each group we have verified components, which you’ll find in the links. Pick your group beforehand to learn how to build a component that is related to the field of most interest to you. Current Group: Life Sciences Temesgen Dadi, Technical Data Scientist in the KNIME Life Sciences team, will teach how to build and share components for the analysis of biological data. You will be guided through the process of creating a shared component, from building the workflow inside it to sharing the component on the KNIME Hub. The component you will create will be able to read in FASTA files and visualize the sequence length distribution of the biological sequences. Beside that you will learn how to create a configuration option and propagate proper error messages.