In this issue

6: Home Air Quality Monitoring (Part 1): Using Nordic’s nRF5340 Dev Kit, By Raul Alvarez-Torrico
16: PLC-Based Swimming Pool System: The PoolOS Project, By Dr. Alexander Pozhitkov, PhD
22: Microprogramming Choices Explained (Part 1): The Microprogram Control Unit, By Wolfgang Matthes
32: Developing Secure Embedded Systems, By Shifting Left with DevSecOps, By Mark Pitchford
38: Embedded PCs Enable Next-Gen Transportation Systems: Fueling Future Needs, By Jeff Child
48: Modularity Leads Data Acquisition Trends: Flexible Functionality, By Jeff Child
52: EMBEDDED SYSTEM ESSENTIALS: Testing Timing Attacks on Access Control: Premises Protection, By Colin O’Flynn
58: PICKING UP MIXED SIGNALS: Designing MCU-Based Lab Instruments: Using the Cypress PSoC 5LP MCU, By Brian Millier
70: FROM THE BENCH: Build an IR-Based LEGO Train Controller (Part 1): Near-Wavelength IR in Action, By Jeff Bachiochi
76: Product News
78: Test Your EQ
79: The Future of SAR Compliance: Smart Sensors Ensure Connectivity and Safety Compliance, By David Wong

Circuit Cellar Magazine Description:

Circuit Cellar magazine features engineering tutorials, detailed microcontroller-based projects, and embedded systems industry news for professional electrical engineers, EE/ECE academics, and highly skilled electronics enthusiasts. Since 1988, Circuit Cellar has featured projects and tutorials from the world's top engineers on subjects such as embedded development (e.g., prototyping and programming), signal processing (e.g., DSP chips and signal conditioning), programmable logic (e.g., FPGA projects), sensor systems (e.g., smart sensors and MEMS), 'Net-connected devices (e.g., IoT projects and protocol stacks), robotics (e.g., robotic systems and proximity sensing), and much more. Circuit Cellar is the ultimate resource for all of your electrical engineering-related needs.