In this issue

6 Op Amp Design Techniques
Analog Adventures
By Stuart Ball

12 MCU-Based Motor Condition Monitoring
Sensors and Signals
By Amit Ashara

18 Wire Wrapping Revisited
For Prototypes and Projects
By Wolfgang Matthes

26 MPEG-H Audio Brings New Dimensions to TV Sound
By Stefan Meltzer

30 EMC Analysis During PCB Layout
Catch Issues Earlier
By Craig Armenti

SPecial FEATURE
34 Wireless Standards and Solutions for IoT
Protocol Choices Abound
By Jeff Child

Technology Spotlight
40 IoT Drives Extreme Low-Power Demands
Enabling “Always On”
By Jeff Child

Product Focus
44 IoT Interface Modules
Ready to Connect
By Jeff Child
48 Embedded System Essentials
Verifying Code Readout Protection Claims
Think Like an Attacker
By Colin O’Flynn

54 Above the Ground Plane
BLDC Fan Current
Motors and Measurements
By Ed Nisley

60 The Consummate Engineer
Thermoelectric Cooling (Part 1)
Failure Analysis
By George Novacek

64 From the Bench
Electronic Speed Control (Part 1)
Motor Evolution
By Jeff Bachiochi

TECH THE FUTURE
79 The Future of Blockchain
IoT and Blockchain are Tied at the Hip
By Peter Varhol

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.