Karl Fraasch Email & Phone Number

Minneapolis/St. Paul, Us

Minneapolis, Minnesota, Us

Guided multiple projects from ambiguous ideas through requirements definition, architecture, implementation, testing, and product delivery, ensuring alignment with industry standards and customer needs.Led firmware and quality engineers in developing IoT and energy-saving building control products, adhering to best practices.Developed a low-code platform using Google Blockly, enabling non-technical users to create custom control sequences for HVAC and lighting with Python/Micropython and embedded C.Co-designed a modular firmware code base for scalability and platform transitions.Introduced test-driven development (TDD) with Ceedling for robust firmware development.Mentored a team in India on Agile/Scrum, source control, and behavior-driven development (BDD).Utilized UML modeling for architecture and design aligned with project requirements.Implemented BACnet and Modbus protocols for thermostat interoperability, achieving BACnet certification.Acted as primary contact for external test firms, ensuring compliance and resolving issues.Integrated Daikin conditioning systems, driving testing and compliance with Daikin’s standards.Introduced wireless protocols for remote connectivity of Daikin systems over a mesh network.Led adoption of LVGL UI framework and Squareline Studio, simplifying UI development on hardware products.

Eden Prairie, Mn, Us

Developed embedded software for a next-gen contrast injector using ARM Cortex platforms, ensuring compliance with IEC 62304 guidelines for Class C devices.Designed a deterministic 24-bit ADC sampling method for precise blood pressure measurement, utilizing peripheral interconnect and DMA to control SPI and GPIO signals.Integrated the QP (QPC++) framework, enhancing real-time task management and system stability.Championed the design and development of the CAN/CANopen network for injector systems, overseeing protocol selection, stack integration, and application-level data design.Created RFID tag security design to prevent knock-offs and enhance product integrity and user safety.Applied NIST guidelines to implement advanced cryptographic functions (SHA hashing, AES, ECC) on resource-constrained embedded systems, optimizing both performance and security.Served as Scrum Master, coordinating the firmware team's activities and breaking down feature work into manageable tasks.Introduced a Continuous Integration (CI) build and test environment into the firmware development lifecycle, automating firmware source code testing and improving reliability.

Eden Prairie, Mn, Us

Integrated BLE 5.0 SOC into hearing aids, enabling advanced wireless features and contributing to successful product launch within one year.Collaborated with silicon vendors to optimize microcontroller features, enhancing hearing aid performance and user experience.Developed GATT communication protocols for mobile app and fitting software control, improving data throughput and usability.Led Li-Ion rechargeable hearing aid project, identifying risks and translating requirements into firmware implementations.

Eden Prairie, Mn, Us

Eden Prairie, Mn, Us

Automated DSP audio algorithm testing using Python and CI methodology

Verona, Wisconsin, Us

Developed automated test infrastructure using Python for design verification of switch-mode power supplies

• Designed test fixture to test drill's external sensors and actuators• Proposed and built a video fiber link for first ever real time borehole imaging system. Used an electrical to optical conversion system to allow imaging 2-3 miles deep. Also designed circuit to power and protect various components of the imaging system. • Designed signal conditioning circuits (pulse extending) to be used in drill instrument section. Used LtSpice circuit simulation software to test the design and OrCad schematic capture to do the layout.• Designed electrical system used to test output power of various electromechanical generators.