Circuit Cellar 393 April 2023 (PDF)

Issue #393April 2023Sensors 4: Joulescope JS220:  A Precision DC Energy Analyzer, By Brian Millier 14: Vintage-Style Tube Amplifier for Musicians: Built Using an ADAU1701 Audio System Chip and ESP32 MCU, By Avian Marinakis 20: FreeRTOS with Arduino: An Introduction, By Pedro Bertoleti 28: TECHNOLOGY FEATURE: Sensors: Integration and Development, By Michael Lynes 34: DATASHEET: 32-Bit Microcontrollers: Chips That Won’t Stop Evolving, By Sam Wallace 38: THE MAGIC SMOKE FACTORY: Thermistors:    Sensitive Resistors to Measure Temperature, By Joseph Corleto 43: START TO FINISH: Biometrics: How Do I Know You Are Who You Say You Are?, By Stuart Ball 48: EMBEDDED IN THIN SLICES: Debugging Embedded Real-Time Systems: Strategies for Duplicating Bugs, By Bob Japenga 52: FROM THE BENCH: Digital Audio Files: Replacing a Proprietary Format, By Jeff Bachiochi 58: Product News: Technology Trending at the World Ag Expo 2023, By Steve Prescott 63: TECH THE FUTURE: The Future of AI Manufacturing: Deployi