Explore software-defined radio signal processing using an affordable $5 microcontroller in this 43-minute conference talk from BSidesLV 2015. Dive into hardware architecture, operating systems, and RAM considerations before delving into complex signal processing techniques. Learn about DC offset spikes, complex multiplication, CIC filters, and clock recovery. Gain insights into digital signal processing applications, including Harris and Intersil chips. Discover practical approaches to debugging and optimizing performance on resource-constrained devices. Engage with questions and discussions on hacking RF and leveraging Harris chip capabilities for software-defined radio projects.