Circuit Cellar 434 September 2026 (PDF)

Issue #434 September 2026 Cybersecurity for OT 4: CodeBuddy Timmy - A Mini Educational Robot for Interactive Learning, By Madelin Prak and Junwoo Kwon 12: Introduction to Radar Systems - Part 2: From Essential Formulae to Laboratory Practice, By Tony Hanna 24: Quadruped Robot with Environmental Mapping - Coordinated Locomotion, Environmental Sensing, and Autonomous Interaction, By Connor Lynaugh and Sarah Grace Brown 31: TECHNOLOGY FEATURE: Designing Cybersecurity Into OT - Building Security from the Ground Up, By Curtis Franklin 38: DATASHEET: Physical Control Shields for SBCs - Bridges to the Real World - Controlling Physical Components from SBCs, By Curtis Franklin 42: EMBEDDED SYSTEM ESSENTIALS: Easy Reverse Engineering with LLMs - A Useful Helper, Not a Magic Wand, By Colin O'Flynn 46: PICKING UP MIXED SIGNALS: EVE5 Evolution - A Hands-On Review of the Bridgetek VM820B15A 15” HD Display, By Brian Millier 63: TECH THE FUTURE: The Future of Cell Infrastructure Mapping - Mapping LTE-M and NB-IoT Cells - Using a Siretta SNYPER 5G to Survey Remote IoT-Ready Cells, By Danny Lemos