Sandy Chu enhanced the sensor initialization flow in the facebook/OpenBIC repository, focusing on improving reliability and observability during power cycles. Using C programming and embedded systems expertise, Sandy restructured the initialization logic to ensure sensors are only initialized when accessible, introduced a reinitialization mechanism, and added real-time status reporting in shell commands. This approach addressed issues where sensors could enter invalid states if the BIC could not access them, particularly during 12V and DC power cycles. The work included a dedicated fix for HSM sensor initialization and was validated end-to-end, reducing operational risk and supporting automation readiness in system programming contexts.